[pfx] Re: Sanity check/suggestions appreciated

On 6/11/2024 4:05 AM, Gilgongo via Postfix-users wrote: On Tue, 11 Jun 2024 at 05:17, Noel Jones via Postfix-users mailto:postfix-users@postfix.org>> wrote: You should remove permit_mx_backup. This feature is intended for ISP-scale users that may not have a complet

[pfx] Re: Sanity check/suggestions appreciated

On 6/10/2024 12:10 PM, Gilgongo via Postfix-users wrote: On Mon, 10 Jun 2024 at 12:58, Matus UHLAR - fantomas via Postfix-users > wrote: 3. smtpd_recipient_restrictions = permit_mx_backup avoid this whenever possible. Or at least define

[pfx] Re: Setting up another "smarthost" with Postfix

On 3/28/2024 6:39 AM, Samuel Goodies via Postfix-users wrote: Ok, I got it installed and running, but any mail from the server to be relayed gets this error. --> DATA <-- 530 5.7.0 Authentication required --> QUIT So far I've chosen Internet Site as my Debian configuration when the

[pfx] Re: Setting up another "smarthost" with Postfix

On 3/27/2024 11:51 AM, Noel Jones via Postfix-users wrote: On 3/27/2024 11:25 AM, Samuel Goodies via Postfix-users wrote: Hi guys. I'm inheriting a job that has an email server hosting several domains, and I'm wanting to move them behind our firewall and route mail from the main mail server

[pfx] Re: Setting up another "smarthost" with Postfix

On 3/27/2024 11:25 AM, Samuel Goodies via Postfix-users wrote: Hi guys. I'm inheriting a job that has an email server hosting several domains, and I'm wanting to move them behind our firewall and route mail from the main mail server to an offsite postfix server that will in turn send them out

[pfx] Re: smtpd_discard_ehlo_keyword_address_maps all but internal

On 3/21/2024 10:21 AM, Viktor Dukhovni via Postfix-users wrote: On Thu, Mar 21, 2024 at 03:20:23PM +0100, Matus UHLAR - fantomas via Postfix-users wrote: Wietse Venema via Postfix-users: smtpd_discard_ehlo_keyword_address_maps = cidr:{ {!10/8 silent-discard,dsn} } On 23.02.24 11:12,

[pfx] Re: smtpd filter orig_client

On 3/18/2024 8:35 PM, Reg Inaldo via Postfix-users wrote: Hi I am seeing an issue with relaying and am looking for a way to filter on a specific smtp line but can't find a way to make it work: In the transaction (eg):  mta-k postfix/smtpd[23771]: 97F808837: client=localhost[127.0.0.1],

[pfx] Re: Ignoring postscreen DNSBL disposition by recipient address

On 3/15/2024 1:11 PM, Matt Saladna via Postfix-users wrote: Hello, I'm seeking a workaround for Microsoft's litany of IPs landing on DNSBL. They'd like all mail irrespective of DNSBL status to be delivered, which requires a skip if the sender IP is blacklisted in postscreen. With separation

[pfx] Re: postfix check_sender_access and subdomain test

On 2/28/2024 1:38 PM, Scott Techlist via Postfix-users wrote: I need to allow a domain to bypass my RBL checks.  I’m doing something wrong, or I’m misunderstanding what I’m checking from my logs.  I’d be grateful for an assist to remedy. This box is an old postfix install Postfix version

[pfx] Re: Postfix stopped logging IP addresses

On 12/27/2023 1:03 PM, Vince Heuser via Postfix-users wrote: Wietse, Happy 25th birthday of your creation! I recently upgraded to mail_version = 3.4.23 Postfix no longer logs IP addresses with the connections. What did I break? My wild guess is that your chroot environment is incomplete. To

[pfx] Re: Using a second domain for outgoing mail

asked is there a way to restrict the group of users that can send from that second domain? We are using ldap for authentication. Please forgive any ignorance on my part. On 12/19/23 10:22 AM, Noel Jones via Postfix-users wrote: On 12/19/2023 9:41 AM, Richard Raether via Postfix-users wrote

[pfx] Re: Using a second domain for outgoing mail

On 12/19/2023 9:41 AM, Richard Raether via Postfix-users wrote: Problem: Our mail server sends mail from cct.lsu.edu. A group of users want to send mail and have their address be stellar-group.org. We already have this in mydestination so we do /get/ email sent to that domain, but at current

[pfx] Re: 25 years today

On 12/14/2023 7:20 AM, Wietse Venema via Postfix-users wrote: As a few on this list may recall, it is 25 years ago today that the "IBM secure mailer" had its public beta release. This was accompanied by a nice article in the New York Times business section. Congratulations on this milestone!

[pfx] Re: 2nd input after milter

On 12/12/2023 7:39 AM, usenet--- via Postfix-users wrote: Hello, Can someone tell me how to configure Postfix (latest on debian12) so that I have a local delivery point after the milter. The reason for this is the RSPAMD "Metadata exporter" function, which creates a loop for me when sending

[pfx] Re: Content_filter selection based on sender domain

On 10/10/2023 1:56 PM, Pedro David Marco via Postfix-users wrote: Hi all, does anyone know how to use different content_filter based on sender domain? Thanks in advance! Pete. You can use a check_sender_access map with a FILTER result pointing to the desired content_filter. This will

[pfx] Re: smtpd rate limiting

On 10/3/2023 2:11 PM, Kevin C via Postfix-users wrote: Hi Matthew, Hi Wietse, Our postfix servers are only MTAs who transfer mails from internal IT apps to end users over Internet. We don't receive mails from Internet. Sometimes, an abnormal activity can fill active queue unitl it's full, and

[pfx] Re: maximal_queue_lifetime maximal_queue_lifetime & Permanent Errors

On 9/22/2023 3:22 PM, Eddie Rowe via Postfix-users wrote: There was some networking work performed that broke my outbound email flow due to an unexpected IP address change.  Email queued up during the equipment install as expected with dsn=4.7.5 or dsn=4.0.0 codes.  Two days later one of our

[pfx] Re: Problems with check_sender_access and bypassing Amavis

On 9/20/2023 2:51 PM, Bryan K. Walton via Postfix-users wrote: We have a Postfix server that works with Amavisd-new to do spam and virus scanning. In my main.cf, I have the following: content_filter = amavisfeed:[127.0.0.1]:10024 Then, I have master.cf configured as such: # AMAVISD-NEW

[pfx] Re: relay access denied

On 9/7/2023 2:31 PM, Patrice Go via Postfix-users wrote: Hi, In fact i ve a server www.domain.org which send emails (from PHP www-data) to an external email t...@.net by the mean of a mail relay mail.domain.org . the

[pfx] Re: new waves of connect/disconnect from *.outlook.com; any add'l pfx configs useful for further remediation?

On 8/15/2023 3:14 PM, pgnd via Postfix-users wrote: my "BFFs" @ M$'s *.outlook.com have decided over the last month or so to send many 10K's of these 2023-08-14T13:11:53.782611-04:00 svr01 postfix/postscreen[27910]: CONNECT from [52.101.56.17]:32607 to [209.123.234.54]:25

[pfx] Re: How to block subaddressing from extern with a table

On 8/14/2023 4:04 PM, lutz.niederer--- via Postfix-users wrote: Hi, we need to block subaddressing from extern, and only from extern. Internally we use it really often. We thought about a table that denies recipient addresses that got a "+". But how do we filter only if they do not come

[pfx] Re: Block based on subject and rcpt to

On 8/14/2023 2:13 PM, SysAdmin EM via Postfix-users wrote: Hi, Is it possible to discard an email based on the Subject and the destination email address? I try this and not work: /^Subject:.*Test email subject .*To:.*m...@me.com/ DISCARD Any helps? You'll need a

[pfx] Re: Can one override use of myorigin for an unqualified recipient?

On 7/13/2023 3:53 PM, Chris Green via Postfix-users wrote: On the Postfix Basic Configuration page it says:- For the sake of consistency between sender and recipient addresses, myorigin also specifies the domain name that is appended to an unqualified recipient address. Is there

[pfx] Re: Getting Recipient when Message size limit is exceeded

On 7/7/2023 11:07 AM, Viktor Dukhovni via Postfix-users wrote: On Fri, Jul 07, 2023 at 11:54:44AM -0400, Viktor Dukhovni via Postfix-users wrote: If the client uses PIPELINING, the pipelined "RCPT TO" after the rejected "MAIL FROM" will presumably be logged. Turns out that's not the case.

[pfx] Re: Ongoing authentication issue, SASL support?

> On Jul 6, 2023, at 2:55 PM, joe a via Postfix-users > wrote: > > On 7/6/2023 12:56 PM, joe a via Postfix-users wrote: >>> On 7/6/2023 8:53 AM, Viktor Dukhovni via Postfix-users wrote: On Thu, Jul 06, 2023 at 08:32:42AM -0400, joe a via Postfix-users wrote: >>> While chasing a

[pfx] Re: Behaviour change between 3.2.2 and 3.7.4?

On 5/2/2023 4:21 PM, kwoody--- via Postfix-users wrote: Log for the nightly cron job run: 03:01:09 mail sendmail[10703]: 342A19Wv010703: from=root, size=14672, class=0, nrcpts=1, msgid=<202305021001.342a19wv010...@mail.citytel.net>, relay=root@localhost This is sent by Sendmail(TM), not

[pfx] Re: Future Date:

On 5/1/2023 2:41 PM, Jon LaBadie via Postfix-users wrote: I've been getting a lot of spam with Date: headers containing future dates, typically 1 year. I don't find any header checks that would look for this type of message.  Have I over looked it? In the meantime I've implemented a script

[pfx] Re: Reply To header

> On Apr 29, 2023, at 12:43 AM, Doug Hardie via Postfix-users > wrote: > > I have an app that sends SMTP to post fix to deliver an email. The first > line it sends after the DATA command is a Reply To line. However, that > causes postfix to terminate the headers and puts the Reply To

[pfx] Re: Deny any sender address with subdomain

On 4/28/2023 8:59 AM, Gerd Hoerst via Postfix-users wrote: Hi ! question 1st : is it a good idea to reject any email which is not sent from a domain  (means sen...@domain.tld) any other like sen...@sub.domain.tld or sub.sub.domain.tld is rejected ? That seems like a bad idea, extremely

[pfx] Re: is localhost.localdomain a FQDN?

On 4/17/2023 9:19 PM, tom--- via Postfix-users wrote: I saw many peer MTA connecting me with this default HELO hostname: localhost.localdomain. is this a FQDN? is it valid? Yes, it's FQDN and valid from a syntax standpoint. That said, it's a strong spam indicator and should never be seen

[pfx] Re: smtp code 450 and delivery to secondary MX

On 4/17/2023 9:35 PM, tom--- via Postfix-users wrote: When my main postfix rejected a message due to reject_unknown_client_hostname: Apr 18 10:27:12 mail postfix/smtpd[129429]: NOQUEUE: reject: RCPT from unknown[194.33.39.17]: 450 4.7.25 Client host rejected: cannot find your hostname,

[pfx] Re: Open relay clarification

On 4/17/2023 3:59 PM, Tyler Montney via Postfix-users wrote: That is the purpose of this discussion, to determine what exactly this scenario presents. As stated above, Provider A is aware and believes it's acceptable. It is acceptable because their documentation has features which rely on

[pfx] Re: Open relay clarification

Please keep replies on list. On 4/17/2023 2:16 PM, Tyler Montney wrote: I'll put it this way, since I'm struggling to word this: Provider A contains the following customers: Acme Corporation (acme.com ) Corley Motors (corley.com ) Provider B contains the

[pfx] Re: Open relay clarification

On 4/17/2023 1:38 PM, Tyler Montney via Postfix-users wrote: I use a mail provider (Provider A) which has thousands of organizations. This provider allows unauthenticated SMTP to other organizations so long as they're using them as a provider (within their ecosystem). Of course, you cannot

[pfx] Re: Postfix as relay server let us send messages with anothyer domain than ours

On 4/11/2023 1:34 PM, Roberto Carna via Postfix-users wrote: Dear all, we have set up Postfix 3.4.14 in a Debian 10 host as a SMTP relay server. All of our hosts send mail alerts using our Postfix relay server, using our main mail domain (suppose ourdomain1.com). But we have realized that if

[P-U] Re: Correct way to disable sender_canonical

On 3/8/2023 3:19 PM, SysAdmin EM via Postfix-users wrote: I am administering a Postfix that uses sender_canonicals to do a rewrite of the header from but I need to disable that option. I have commented the sender_canonical file but when reloading the configuration I try to send an email and

[P-U] Re: Postfix lists are migrating to a new list server

On 3/7/2023 12:27 PM, postfix--- via Postfix-users wrote: Reviewing logs I notice many soft bounces from the new list. Some emails from the new list have been accepted and I don't understand what the differences are. I have not seen these types of errors before and don't understand what is

[P-U] Re: Poster Name not visible in Thunderbird

On 3/7/2023 11:31 AM, Matthew McGehrin via Postfix-users wrote: Hello. Sadly, when viewing this list in Thunderbird, it only displays "Postfix Users" as the From address, versus showing the posters name. I tend to ignore posters I don't recognize, and now i need to open each post to see who