[BlueOnyx:15187] Re: Mail not being received on 5108R

[Adam Lepp]

Thanks Chuck - DNS looks normal and I've not changed anything.
If there are specific things to look for please let me know.

I have sent Michael login info -- help is greatly appreciated.

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That could be a DNS issue. On the command line run "nslookup google.com"
and see how long it takes.

If it takes multiple seconds, check your /etc/resolve.conf. Could be
that the first nameserver listed there is not responding rapidly enough
and the check then carries on down the list of specified nameserver
until one replies back.

If you send me the login details offlist I can take a look.

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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. 

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. 

Check your DNS settings.  And check to insure the DNS you are using is
working right. 



Chuck 



---------- Original Message ----------- 
From: "Adam Lepp" <a at netqb.com> 
To: <blueonyx at blueonyx.it> 
Sent: Mon, 14 Apr 2014 13:39:24 -0400 
Subject: [BlueOnyx:15184]  Mail not being received on 5108R 

> For the last 4 hours, my server has been unable to receive email from some

> senders. 
> e.g., sending from AOL produces the error message:   
> 
> "Action: failed 
> Status: 4.4.2 
> Diagnostic-Code: X-Outbound-Mail-Relay; conversation with 
>    mail.XXX.com[AA.BB.CC.DD] timed out while sending end of data -- 
>    message may be sent more than once" 
> 
> I test the server with WebSitePulse, and have received this failure
message: 
> 
> "4.3.2 Please try again later" 
> 
> I am able to receive from some senders, but messages tend to be delayed. 
> My "mqueue" currently has 100+ messages. 
> 
> I restarted sendmail and spamass-milter multiple times, and restarted the 
> server twice. 
> In reading about similar issues, it appears to be related to Spam
Assassin, 
> but I haven't been able to find a solution. 
> I haven't changed anything on the server other than the YUM adjustment
from 
> last week (Thanks Michael) 
> 
> This occurred out of the blue - server load and disk space are fine. 
> It does take a rather long amount of time to log into SSH -- perhaps this
is 
> related. 
> Once I'm in, it's fast, and "su -" logs me in as root in the normal, quick

> time. 
> 
> I added an additional email address just to make sure I receive list 
> postings. 
> 
> Assistance would be greatly appreciated. 
> 
> --- Adam 
>