funsec mailing list archives

Re: Getting messages backwards?


From: Gadi Evron <ge () linuxbox org>
Date: Thu, 19 Oct 2006 03:42:53 -0500 (CDT)

To quote... :

Well, the only thing that I can think of that would cause that are these 
messages:

Oct 18 09:59:35 linuxbox sm-mta[8516]: k9IE9A9S006712: 
to=<blanchard_michael () emc com>,<johnson_neil () emc com>
, delay=00:49:37, xdelay=00:00:11, mailer=esmtp, pri=11487292, 
relay=iris.emc.com. [128.222.34.15], dsn=4.0.0, stat=*Deferred: 
Connection reset by iris.emc.com*.


Oct 18 09:17:40 linuxbox sm-mta[6782]: k9IE9A9S006712: 
to=<johnson_neil () emc com>,<blanchard_michael () emc com>
, delay=00:07:42, xdelay=00:00:06, mailer=esmtp, pri=11397292, 
relay=iris.emc.com. [128.222.34.15], dsn=4.0.0, stat=*Deferred: 
Connection timed out with iris.emc.com*.

When the connection times out, then those messages get queued up. When a 
new message arrives sendmail will try again, which may succeed and then 
be delivered prior to the other messages that were queued because the 
connection is reset by EMC or sometimes times out because of the 
inability to reach their mail server(s).

Also, doing a quick manual check on their mail servers listed in their 
MX record, only two of the eight (8) even connected (the others were 
connection refused). And of those 2, only one of them responded in a 
reasonable period of time.

        Gadi.

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