Re: [qmailtoaster] qmail toaster support for BDAT
Hi Jeff, What version of qmail are you running? Eric On 8/29/2022 9:32 AM, Eric Broch wrote: Jeff, Are you using spamdyke? How spamdyke works: When a message is not blocked spamdyke works by acting as a middleman between qmail and the network (in Unix terms, it's a pipe). When no spamdyke filters are triggered and a message is delivered normally, spamdyke silently passes data in both directions. As the SMTP conversation takes place, spamdyke collects a few pieces of data (e.g. the sender and recipient addresses) so they can be logged. spamdyke does modify the incoming message in one way. The SMTP protocol requires the remote sender to end every line with a two character terminator -- a carriage return and a line feed. Unlike most other mail servers, qmail chooses to strictly enforce this requirement. If a remote sender uses only a line feed to end a line (a typical and easy mistake to make), qmail will reject the message: |451 See http://pobox.com/~djb/docs/smtplf.html.| Because qmail's strict enforcement of the protocol tends to cause more problems than it solves, spamdyke silently helps mail clients avoid this error by inserting a carriage return before any bare line feed characters it sees. This doesn't affect the messages, it only allows poorly-written mail clients to send email. On 8/29/2022 8:20 AM, Jeff Koch wrote: I do have to say that after running qmail toasters for over 20 years with over a few thousand users this is the first time I've heard of this issue. I should be getting complaints up the wazoo. Jeff On 8/29/2022 10:13 AM, Eric Broch wrote: Tonix, In your opinion, could this be fixed with a patch to the 'blast' function in qmail-smtpd to allow bare line feeds or would there need to be 'chunking' and 'bdat' calls added to smtp commands as well? Eric On 8/29/2022 7:16 AM, Tonix wrote: Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
Jeff, Are you using spamdyke? How spamdyke works: When a message is not blocked spamdyke works by acting as a middleman between qmail and the network (in Unix terms, it's a pipe). When no spamdyke filters are triggered and a message is delivered normally, spamdyke silently passes data in both directions. As the SMTP conversation takes place, spamdyke collects a few pieces of data (e.g. the sender and recipient addresses) so they can be logged. spamdyke does modify the incoming message in one way. The SMTP protocol requires the remote sender to end every line with a two character terminator -- a carriage return and a line feed. Unlike most other mail servers, qmail chooses to strictly enforce this requirement. If a remote sender uses only a line feed to end a line (a typical and easy mistake to make), qmail will reject the message: |451 See http://pobox.com/~djb/docs/smtplf.html.| Because qmail's strict enforcement of the protocol tends to cause more problems than it solves, spamdyke silently helps mail clients avoid this error by inserting a carriage return before any bare line feed characters it sees. This doesn't affect the messages, it only allows poorly-written mail clients to send email. On 8/29/2022 8:20 AM, Jeff Koch wrote: I do have to say that after running qmail toasters for over 20 years with over a few thousand users this is the first time I've heard of this issue. I should be getting complaints up the wazoo. Jeff On 8/29/2022 10:13 AM, Eric Broch wrote: Tonix, In your opinion, could this be fixed with a patch to the 'blast' function in qmail-smtpd to allow bare line feeds or would there need to be 'chunking' and 'bdat' calls added to smtp commands as well? Eric On 8/29/2022 7:16 AM, Tonix wrote: Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
Eric, your question is right, but I'n not able to answer specifically, as it is a lot of time I dismissed my installations. As far as I remember, I used fixcrio but it could add other problems, like breaking ssl (if internal openssl is used with starttls) or corrupting attachments if these are not base64. What I can say is that my actual provider (which uses qmail and for which I made some code improvements, so I know something about his configuration), uses spamdyke as frontend to qmail-smtpd, and spamdyke solves that problem automatically. See: https://www.spamdyke.org/documentation/README.html How spamdyke works: When a message is not blocked spamdyke works by acting as a middleman between qmail and the network (in Unix terms, it's a pipe). When no spamdyke filters are triggered and a message is delivered normally, spamdyke silently passes data in both directions. As the SMTP conversation takes place, spamdyke collects a few pieces of data (e.g. the sender and recipient addresses) so they can be logged. spamdyke does modify the incoming message in one way. The SMTP protocol requires the remote sender to end every line with a two character terminator -- a carriage return and a line feed. Unlike most other mail servers, qmail chooses to strictly enforce this requirement. If a remote sender uses only a line feed to end a line (a typical and easy mistake to make), qmail will reject the message: |451 See http://pobox.com/~djb/docs/smtplf.html.| Because qmail's strict enforcement of the protocol tends to cause more problems than it solves, spamdyke silently helps mail clients avoid this error by inserting a carriage return before any bare line feed characters it sees. This doesn't affect the messages, it only allows poorly-written mail clients to send email. - I can't say anyting more than this, sorry. Tonino Il 29/08/2022 16:13, Eric Broch ha scritto: Tonix, In your opinion, could this be fixed with a patch to the 'blast' function in qmail-smtpd to allow bare line feeds or would there need to be 'chunking' and 'bdat' calls added to smtp commands as well? Eric On 8/29/2022 7:16 AM, Tonix wrote: Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
https://talk.plesk.com/threads/hotmail-sends-bare-lf-that-rejected-by-qmail.94222/ If the above advise is taken with fixcrio you must you spamdyke to do your TLS Eric On 8/29/2022 8:20 AM, Jeff Koch wrote: I do have to say that after running qmail toasters for over 20 years with over a few thousand users this is the first time I've heard of this issue. I should be getting complaints up the wazoo. Jeff On 8/29/2022 10:13 AM, Eric Broch wrote: Tonix, In your opinion, could this be fixed with a patch to the 'blast' function in qmail-smtpd to allow bare line feeds or would there need to be 'chunking' and 'bdat' calls added to smtp commands as well? Eric On 8/29/2022 7:16 AM, Tonix wrote: Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
I do have to say that after running qmail toasters for over 20 years with over a few thousand users this is the first time I've heard of this issue. I should be getting complaints up the wazoo. Jeff On 8/29/2022 10:13 AM, Eric Broch wrote: Tonix, In your opinion, could this be fixed with a patch to the 'blast' function in qmail-smtpd to allow bare line feeds or would there need to be 'chunking' and 'bdat' calls added to smtp commands as well? Eric On 8/29/2022 7:16 AM, Tonix wrote: Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
Tonix, In your opinion, could this be fixed with a patch to the 'blast' function in qmail-smtpd to allow bare line feeds or would there need to be 'chunking' and 'bdat' calls added to smtp commands as well? Eric On 8/29/2022 7:16 AM, Tonix wrote: Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
Not only this (local) sender. Also other SMTP server which relay messages with same problem, or emails generated by application programs or network facilities which send simple alert emails not caring too much about CR LF. Il 29/08/2022 14:56, Jeff Koch ha scritto: Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
Hi Tonino: Does this mean that all of the emails this sender sends through her O365 server would be rejected ? Jeff On 8/29/2022 6:55 AM, Tonix wrote: More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail toaster support for BDAT
More exactly those messages will be rejected by remote O365 receiver servers whose admins will have enabled the SMTPSEND.BareLinefeedsAreIllegal flag. Tonino Il 28/08/2022 22:20, Jeff Koch ha scritto: Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff - To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
[qmailtoaster] Re: **SPAM** Re: [qmailtoaster] qmail toaster support for BDAT
I just tested my two mail servers with qmt and both work just fine and sent email from outlook web. So not sure what is your config and which patch you have used. Remo > On Aug 28, 2022, at 13:25, Jaime Lerner wrote: > > I read that if you’re running ESMTP, that includes BDAT support. QMT has > ESMTP via a patch. I know my server’s banner includes ESMTP during an SMTP > handshake ... so wouldn’t that mean QMT has BDAT support? > > From: Jeff Koch <mailto:jeffk...@intersessions.com>> > Reply-To: <mailto:qmailtoaster-list@qmailtoaster.com>> > Date: Sunday, August 28, 2022 at 4:20 PM > To: <mailto:qmailtoaster-list@qmailtoaster.com>> > Subject: Re: [qmailtoaster] qmail toaster support for BDAT > > Thanks Tonix - so the result is that messages from email clients (like > Outlook) that add multiple bare line feeds in their messages and use O365 > will now get rejected by the qmail toaster. How nice of Microsoft. > > Jeff > > On 8/28/2022 2:27 PM, to...@interazioni.it <mailto:to...@interazioni.it> > wrote: >> This document explains the problem: >> https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online >> >> <https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online> >> >> I will omit my thought on remote admins. >> A very simple rule in communication is: be strict when sending, be tolerant >> when receiving. >> >> Regards, >> Tonino >> >> >> Il 28 agosto 2022 19:24:13 CEST, Jeff Koch >> <mailto:jeffk...@intersessions.com> ha scritto: >> >Further information: >> > >> >The sender also got the following message from his exchange mailserver when >> >trying to send to our mailserver: >> > >> >Your message contains invalid characters (bare line feed characters) which >> >the email servers at ..com don't support >> > >> >Jeff >> > >> > >> >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> >> >> Never heard of this before but an email sender to our mailserver got the >> >> following error message: >> >> >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare >> >> linefeeds, which cannot be sent via DATA and receiving system does not >> >> support BDAT >> >> >> >> Does anyone know whether the qmail toaster supports the SMTP protocol >> >> BDAT command ? >> >> >> >> Thanks, >> >> >> >> Jeff
Re: [qmailtoaster] qmail toaster support for BDAT
Thanks Tonix - so the result is that messages from email clients (like Outlook) that add multiple bare line feeds in their messages and use O365 will now get rejected by the qmail toaster. How nice of Microsoft. Jeff On 8/28/2022 2:27 PM, to...@interazioni.it wrote: This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? >> >> Thanks, >> >> Jeff
Re: [qmailtoaster] qmail toaster support for BDAT
This document explains the problem: https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-6-11-in-exchange-online I will omit my thought on remote admins. A very simple rule in communication is: be strict when sending, be tolerant when receiving. Regards, Tonino Il 28 agosto 2022 19:24:13 CEST, Jeff Koch ha scritto: >Further information: > >The sender also got the following message from his exchange mailserver when >trying to send to our mailserver: > >Your message contains invalid characters (bare line feed characters) which the >email servers at ..com don't support > >Jeff > > >On 8/28/2022 12:45 PM, Jeff Koch wrote: >> >> Never heard of this before but an email sender to our mailserver got the >> following error message: >> >> 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare >> linefeeds, which cannot be sent via DATA and receiving system does not >> support BDAT >> >> Does anyone know whether the qmail toaster supports the SMTP protocol BDAT >> command ? >> >> Thanks, >> >> Jeff
Re: [qmailtoaster] qmail toaster support for BDAT
Further information: The sender also got the following message from his exchange mailserver when trying to send to our mailserver: Your message contains invalid characters (bare line feed characters) which the email servers at ..com don't support Jeff On 8/28/2022 12:45 PM, Jeff Koch wrote: Never heard of this before but an email sender to our mailserver got the following error message: 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT Does anyone know whether the qmail toaster supports the SMTP protocol BDAT command ? Thanks, Jeff
