Low level smtp error: Server not connected
I am trying to run Mailman 2.1.9 on a CentOS 4 server with postfix 2.4.1. I had Mailman 2.1.5 running on a slower system and wanted to offload some apps to this newer server but am having problems. check_perms has no errors. Creating lists works fine and when postings are submitted the messages are delivered to the list admins re posting verifications.
But only a few of the messages are getting delivered. logs/smtp-failure shows many of this type of error: "delivery to someone@gmail.com failed with code -1: (104, 'Connection reset by peer')" I am also seeing many " Low level smtp error: Server not connected, msgid" errors. I did try all the suggested fixes in the FAQ including adding the line to get error output in the logs/error file. And this file is showing successful delivery, such as "May 26 16:33:44 2007 qrunner(20744): reply: '250 2.1.5 Ok\r\n' May 26 16:33:44 2007 qrunner(20744): reply: retcode (250); Msg: 2.1.5 Ok May 26 16:33:44 2007 qrunner(20744): send: 'rcpt TO:<somebody@surewest.net>\r\n"" but the majority of the messages are simply stuck in the qfiles/out and qfile/rety directory.
I am running python 2.5.1 so that I could get the error logging to work but this problem happened with python 2.3.
Any suggestions would be greatly appreciated since my mailing list no longer works at all.
Thanks.
Leonard Jacobs writes:
"delivery to someone@gmail.com failed with code -1: (104, 'Connection reset by peer')" I am also seeing many " Low level smtp error: Server not connected, msgid" errors.
This seems likely to be either a Postfix problem, or maybe you've caught a social disease (ie, a bunch of big ISPs have decided you're a spammer). Either way, the first place to investigate is the Postfix logs.
Leonard Jacobs wrote:
I am trying to run Mailman 2.1.9 on a CentOS 4 server with postfix 2.4.1. I had Mailman 2.1.5 running on a slower system and wanted to offload some apps to this newer server but am having problems. check_perms has no errors. Creating lists works fine and when postings are submitted the messages are delivered to the list admins re posting verifications.
But only a few of the messages are getting delivered. logs/smtp-failure shows many of this type of error: "delivery to someone@gmail.com failed with code -1: (104, 'Connection reset by peer')" I am also seeing many " Low level smtp error: Server not connected, msgid" errors. I did try all the suggested fixes in the FAQ including adding the line to get error output in the logs/error file. And this file is showing successful delivery, such as "May 26 16:33:44 2007 qrunner(20744): reply: '250 2.1.5 Ok\r\n' May 26 16:33:44 2007 qrunner(20744): reply: retcode (250); Msg: 2.1.5 Ok May 26 16:33:44 2007 qrunner(20744): send: 'rcpt TO:<somebody@surewest.net>\r\n"" but the majority of the messages are simply stuck in the qfiles/out and qfile/rety directory.
Leonard,
I don't know where you are with this. I've read the rest of the thread, but I don't know if you've discovered anything or not.
Here's what I can tell you.
From the Mailman/Python/smtplib point of view, Postfix is dropping the connection unexpectedly.
You only show a small debug snippet above, but somewhere in the debug output there should be a point where something goes wrong in the SMTP transaction sequence. This should give you a clue.
I'm guessing, since individual notices work, that postfix doesn't like transactions with a lot of recipients. Try setting
SMTP_MAX_RCPTS = 1
in mm_cfg.py and restarting mailman. If that works, you can then look at why Postfix doesn't like more than x recipients in a transaction.
-- Mark Sapiro <msapiro@value.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (3)
-
Leonard Jacobs -
Mark Sapiro -
Stephen J. Turnbull