From: Joey (JoeyWeb56.net)
Date: Fri May 09 2008 - 09:27:02 CDT

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> -----Original Message-----
> From: Wietse Venema [mailto:wietseporcupine.org]
> Sent: Friday, May 09, 2008 9:24 AM
> To: Joey
> Cc: postfix-userspostfix.org
> Subject: Re: mailq lockups
>
> Joey:
> > What legit business with exception of a big isp would have that many
> > mailservers.
> > Somehow there is something related to spam which is causing the lockup.
>
> Stop speculating, start doing real measurements.
>
> Send mail to the exchange box that pretends to come from such a domain.
>
> $ sendmail -f usersuspect-domain recipient... < inputfile
>
> where inputfile contains some text.
>
> And so on.
>
> Wietse

This was a good test, if I use the sender domain of the messages I am saying
are spam because they are the messages that lock up in the queue and remain
there:
sendmail -f colvdiyfqnaturalfoodchain.com testaccountclientserver.net <
testfile

This times out sending to the exchange server.

If I take the same exact entry but put my domain as the sender like so:
sendmail -f colvdiyfqmydomainname.com testaccountclientserver.net <
testfile

It works perfectly with NO hung connections on either side.

I tried this with 2 different domains that were from messages that were
locked up in the queue on the postfix side with the same results.

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