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Long amount of time to log into SSH indicates a probable DNS problem. The SSH server is attempting to do a reverse lookup, so it can log the connection by IP and name.
<br />
<br />That could also cause a problem with e-mail. If SpamAssassin and the Milter are using reverse lookup <=> forward name match as a SPAM check, mail wouldn't get through when DNS isn't working right.
<br />
<br />Check your DNS settings. And check to insure the DNS you are using is working right.
<br />
<br />
<br />
<br />Chuck
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<br />
<br /><b>---------- Original Message
-----------</b>
<br />
From: "Adam Lepp" <a@netqb.com>
<br />
To: <blueonyx@blueonyx.it>
<br />
Sent: Mon, 14 Apr 2014 13:39:24 -0400
<br />
Subject: [BlueOnyx:15184] Mail not being received on 5108R
<br />
<br />> For the last 4 hours, my server has been unable to receive email from
some
<br />>
senders.
<br />>
e.g., sending from AOL produces the error message:
<br />>
<br />>
"Action: failed
<br />>
Status: 4.4.2
<br />>
Diagnostic-Code: X-Outbound-Mail-Relay; conversation with
<br />>
mail.XXX.com[AA.BB.CC.DD] timed out while sending end of data --
<br />>
message may be sent more than once"
<br />>
<br />>
I test the server with WebSitePulse, and have received this failure message:
<br />>
<br />>
"4.3.2 Please try again later"
<br />>
<br />>
I am able to receive from some senders, but messages tend to be delayed.
<br />>
My "mqueue" currently has 100+ messages.
<br />>
<br />>
I restarted sendmail and spamass-milter multiple times, and restarted the
<br />>
server twice.
<br />>
In reading about similar issues, it appears to be related to Spam Assassin,
<br />>
but I haven't been able to find a solution.
<br />>
I haven't changed anything on the server other than the YUM adjustment from
<br />>
last week (Thanks Michael)
<br />>
<br />>
This occurred out of the blue - server load and disk space are fine.
<br />>
It does take a rather long amount of time to log into SSH -- perhaps this is
<br />>
related.
<br />>
Once I'm in, it's fast, and "su -" logs me in as root in the normal,
quick
<br />>
time.
<br />>
<br />>
I added an additional email address just to make sure I receive list
<br />>
postings.
<br />>
<br />>
Assistance would be greatly appreciated.
<br />>
<br />>
--- Adam
<br />>
<br />>
_______________________________________________
<br />>
Blueonyx mailing list
<br />>
Blueonyx@mail.blueonyx.it
<br />>
<a target="_blank" href="http://mail.blueonyx.it/mailman/listinfo/blueonyx">http://mail.blueonyx.it/mailman/listinfo/blueonyx</a>
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-------</b>
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