[Mailman-Users] Can't send messages to list

[Eric Howland]

On 8/27/06, Mark Sapiro <msapiro at value.net> wrote:
> Brad Knowles wrote:
>
> >At 12:31 AM -0400 2006-08-27, David Diskin wrote:
> >
> >>                        What is happening lately is that new posts are
> >>  visible in the archives, but in general are not mailed out or may not
> >>  be mailed out for several hours to several days.   There are no
> >>  errors in the error log.  The members allowed to post have verizon
> >>  dsl accounts.  Is there an explanation for this behavior?
> >
> >This is either a problem with the MTA on the server, or the outbound
> >queue within Mailman.  Either way, the normal suggestions is to
> >search the FAQ for "performance" and then follow the recommendations
> >there.
>
>
> The symptoms are those of a hoplessly backlogged 'out' queue in
> Mailman. If you have access to them, you can look at Mailman's
> qfiles/out/ directory, which will probably contain a large number of
> entries waiting to be processed, and Mailman's 'smtp' log. In the smtp
> log, you will probably see that the time stamp of each entry is equal
> to its processing time added to the timestamp of the previous entry
> (i.e., there is no 'quiet time' between entries), and the processing
> times may be much longer than those in the log from before 'lately'.
> If you can find a place in the log where processing times suddenly
> increase, that will pinpoint the time at which the MTA started taking
> longer to process smtp transactions, thus causing the backlog.
>
> --
> Mark Sapiro <msapiro at value.net>       The highway is for gamblers,
> San Francisco Bay Area, California    better use your sense - B. Dylan
>
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>

I have this problem as well. Mark's response describes my case.  In my
smtp-failures file I get:

[root at raid src]# tail /var/log/mailman/smtp-failure
Aug 27 04:20:05 2006 (23140) delivery to duga at wisc.edu failed with
code -1: (110, 'Connection timed out')
Aug 27 04:20:05 2006 (23140) delivery to mcvandin at wisc.edu failed with
code -1: (110, 'Connection timed out')
Aug 27 04:20:05 2006 (23140) delivery to bagbymc at email.uc.edu failed
with code -1: (110, 'Connection timed out')
Aug 27 04:20:05 2006 (23140) delivery to
rwenzlaff at neuroscience.mcw.edu failed with code -1: (110, 'Connection
timed out')
Aug 27 04:20:05 2006 (23140) delivery to nazes at charter.net failed with
code -1: please run connect() first
Aug 27 04:20:05 2006 (23140) delivery to diane at thekeyes.org failed
with code -1: please run connect() first
Aug 27 04:23:22 2006 (23140) Low level smtp error: (110, 'Connection
timed out'), msgid:
<mailman.0.1156389782.2645.friends_wingra at danenet.org>
Aug 27 04:23:33 2006 (23140) delivery to cvasseur at 0instant.com failed
with code -1: (110, 'Connection timed out')
Aug 27 04:26:53 2006 (23140) Low level smtp error: (110, 'Connection
timed out'), msgid: <001c01c6c72e$9f8b7e20$2502a8c0 at VALUED5BD4C299>
Aug 27 04:26:57 2006 (23140) Low level smtp error: please run
connect() first, msgid:
<001c01c6c72e$9f8b7e20$2502a8c0 at VALUED5BD4C299>


I take it that the Low level smtp errors are comming from my MTA
(postfix). In my case the problem was intermittent untill about a week
ago when it became steady.  I have posted to the postfix list but I
still have no understanding of who should be running connect().


[root at raid src]# tail /var/log/mailman/smtp
Aug 27 04:20:05 2006 (23140)
<20060822223840.11493.qmail at web54403.mail.yahoo.com> smtp for 93
recips, completed in 189.377 seconds
Aug 27 04:23:33 2006 (23140)
<mailman.0.1156389782.2645.friends_wingra at danenet.org> smtp for 1
recips, completed in 199.497 seconds

I get lots of entries arround (but not exactly) 189 seconds.  I wonder
if this is some kind of timeout.

I also get in my error file:

Aug 27 04:16:54 2006 (23140) Traceback (most recent call last):
  File "/var/mailman/Mailman/Queue/Runner.py", line 111, in _oneloop
    self._onefile(msg, msgdata)
  File "/var/mailman/Mailman/Queue/Runner.py", line 167, in _onefile
    keepqueued = self._dispose(mlist, msg, msgdata)
  File "/var/mailman/Mailman/Queue/OutgoingRunner.py", line 73, in _dispose
    self._func(mlist, msg, msgdata)
  File "/var/mailman/Mailman/Handlers/SMTPDirect.py", line 162, in process
    conn.quit()
  File "/var/mailman/Mailman/Handlers/SMTPDirect.py", line 89, in quit
    self.__conn.quit()
  File "/usr/lib/python2.2/smtplib.py", line 702, in quit
    self.docmd("quit")
  File "/usr/lib/python2.2/smtplib.py", line 358, in docmd
    return self.getreply()
  File "/usr/lib/python2.2/smtplib.py", line 332, in getreply
    line = self.file.readline()
IOError: [Errno 104] Connection reset by peer

Aug 27 04:16:55 2006 (23140) SHUNTING:
1156261104.130233+d719c44d4802cd25a866736a4dcd4b9725db557c


Is the reset by peer comming from the MTA or beyond the MTA?

Eric