I have recently noticed that email leaving my (otherwise very
succesful) courier server (0.38.0) destined for <anyone>@pacbell.net
sustains a "Connection timed out" and the message is deferred for a
later delivery attempt. These attempts occur and some hours later the
sender receives the bad news.
This same email will succesfully be delivered if sent from a
different server (non courier but that is not to say there is not
something about my courier server that is misconfigured).
There are no known other problems and I have been running this
configuration for almost one year. pacbell.net is the only receiving
server to exhibit this problem.
As referenced in http://www.courier-mta.org/courier.html I created a
file, esmtptimeoutconnect, with the one line contents "0\n" but as I
suspect that there is something about the initial HELO message that the
pacbell server is disliking (rather than it being a very busy server)
I was not expecting any success. there was no change other than a
longer time elapsing between the "started" msg and the
timeout. Previousy, 1 minute, increased to value shown below in the maillog excerpt.
The next debugging step I would like to attempt is to
examine/trace the SMTP dialogue that is taking place between my courier server
and pacbell's receiving server - assuming that tracing/logging this dialogue is somehow
possible.
Are there any other suggestions folks might have to debug/fix this
problem. It is embarassing telling users that there is one destination domain they can't use!
below is an excerpt of one "cycle" of a failed delivery attempt:
Jan 10 17:46:23 chrony courierd: started,id=000047F0.3E1F6B00.00004A5A,from=<[EMAIL PROTECTED]>,module=esmtp,host=pacbell.net,addr=<[EMAIL PROTECTED]>
Jan 10 17:49:35 chrony courieresmtp: id=000047F0.3E1F6B00.00004A5A,from=<[EMAIL PROTECTED]>,addr=<[EMAIL PROTECTED]>: Connection timed out
Jan 10 17:49:35 chrony courieresmtp: id=000047F0.3E1F6B00.00004A5A,from=<[EMAIL PROTECTED]>,addr=<[EMAIL PROTECTED]>,status: deferred
thanks for any help
peter davies
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