[vchkpw] rcpt check user problems with sender - resolution
Hi, Tonino was able to do a fast analysis of the problem. Server: Qmail with Tonino's check user patch. Problem: When an email sender identifying itself as SMTPSVC(6.0.3790.1830) sends an email to multiple rcpt's, where some of the rcpt are valid and some are invalid, not all the emails to valid rcpts are delivered and the sender reports an incorrect list of valid/invalid rcpts. Resolution: Problem due to Outlook not fully supporting SMTP protocol. Details: Sender is probably using ISA server (Microsoft integrated firewall) that declares itself to be SMTPSVC(6.0.3790.1830) and Outlook as the email client. The SMTPSVC acts as a proxy, passing the SMTP session results back to the email client. Sender is probably using Microsoft Outlook. Outlook is known to stop processing the mail to: rcpts when it receives a invalid user response. After that failure response Outlook will fail and not continue to send the remaining rcpt's. Hope that clears things up, Ken Jones
Re: [vchkpw] rcpt check user problems with sender - resolution
Rick Macdougall wrote: Ken Jones wrote: Hi, Tonino was able to do a fast analysis of the problem. Server: Qmail with Tonino's check user patch. Problem: When an email sender identifying itself as SMTPSVC(6.0.3790.1830) sends an email to multiple rcpt's, where some of the rcpt are valid and some are invalid, not all the emails to valid rcpts are delivered and the sender reports an incorrect list of valid/invalid rcpts. Resolution: Problem due to Outlook not fully supporting SMTP protocol. So there was no real resolution ? Did you have them stop using the ISA firewall ? Regards, Rick I disabled check user for their static IP. Ken
Re: [vchkpw] rcpt check user problems with sender - resolution
On Wednesday 31 May 2006 12:44, Ken Jones wrote: I disabled check user for their static IP. and hopefully informed them that they should use an MUA that isn't braindead ;) -Jeremy -- Jeremy Kitchen ++ [EMAIL PROTECTED] http://ipaction.org/ -- defend your rights to fair use pgpEVusE9PjIk.pgp Description: PGP signature
Re: [vchkpw] rcpt check user problems with sender - resolution
At 21.44 31/05/2006, you wrote: Rick Macdougall wrote: Ken Jones wrote: Hi, Tonino was able to do a fast analysis of the problem. Server: Qmail with Tonino's check user patch. Problem: When an email sender identifying itself as SMTPSVC(6.0.3790.1830) sends an email to multiple rcpt's, where some of the rcpt are valid and some are invalid, not all the emails to valid rcpts are delivered and the sender reports an incorrect list of valid/invalid rcpts. Resolution: Problem due to Outlook not fully supporting SMTP protocol. So there was no real resolution ? Did you have them stop using the ISA firewall ? Regards, Rick I disabled check user for their static IP. Are they using your server as a relay, or are they just sending to everyone from Outlook? I feel chkuser should be disabled when used as relay from Outlook or Eudora. Regards, Tonino Ken
Re: [vchkpw] rcpt check user problems with sender - resolution
tonix (Antonio Nati) wrote: At 21.44 31/05/2006, you wrote: Rick Macdougall wrote: Ken Jones wrote: Hi, Tonino was able to do a fast analysis of the problem. Server: Qmail with Tonino's check user patch. Problem: When an email sender identifying itself as SMTPSVC(6.0.3790.1830) sends an email to multiple rcpt's, where some of the rcpt are valid and some are invalid, not all the emails to valid rcpts are delivered and the sender reports an incorrect list of valid/invalid rcpts. Resolution: Problem due to Outlook not fully supporting SMTP protocol. So there was no real resolution ? Did you have them stop using the ISA firewall ? Regards, Rick I disabled check user for their static IP. Are they using your server as a relay, or are they just sending to everyone from Outlook? I feel chkuser should be disabled when used as relay from Outlook or Eudora. They are just sending using Outlook. Not as a relay. They are an external company sending to local users. We do not have any reported problems from any relay users. Ken
Re: [vchkpw] rcpt check user problems with sender - resolution
At 23.25 31/05/2006, you wrote: tonix (Antonio Nati) wrote: At 21.44 31/05/2006, you wrote: Rick Macdougall wrote: Ken Jones wrote: Hi, Tonino was able to do a fast analysis of the problem. Server: Qmail with Tonino's check user patch. Problem: When an email sender identifying itself as SMTPSVC(6.0.3790.1830) sends an email to multiple rcpt's, where some of the rcpt are valid and some are invalid, not all the emails to valid rcpts are delivered and the sender reports an incorrect list of valid/invalid rcpts. Resolution: Problem due to Outlook not fully supporting SMTP protocol. So there was no real resolution ? Did you have them stop using the ISA firewall ? Regards, Rick I disabled check user for their static IP. Are they using your server as a relay, or are they just sending to everyone from Outlook? I feel chkuser should be disabled when used as relay from Outlook or Eudora. They are just sending using Outlook. Not as a relay. They are an external company sending to local users. We do not have any reported problems from any relay users. I have reported complaints from customers which use Outlook; when they send to multiple recipients (and one is wrong) cannot understand which is the error. So I have a dedicated qmail-smtpd for relaying users where I accept all messages without chkuser. Tonino Ken
