we have a dv server with mediatmeple, running apache 2.2, and plesk panel 10.3.

for some reason, when sending mail from our domain to theirs, or when they send email to ours, the messages bounce back with the 'retry timeout' error.

before messages bounce back which we send out to this domain, i see them stuck in the mail queue in plesk panel: http://i.imgur.com/lRrqy.png

example of info in bounced message:

> > Subject: Mail delivery failed: returning message to sender
> > 
> > 
> >> This message was created automatically by mail delivery software.
> >>
> >> A message that you sent could not be delivered to one or more of its
> >> recipients. This is a permanent error. The following address(es) failed:
> >>
> >> mike@floridaseating.com
> >> retry timeout exceeded
> >> errol@floridaseating.com
> >> retry timeout exceeded
> >>
> >> ------ This is a copy of the message, including all the headers. ------
> >>
> >> Return-path: <claudio@sitconf.com>
> >> Received: from cpe00265acde45a-cm000e5c6e3f4e.cpe.net.cable.rogers.com 
> >> ([174.112.173.113] helo=sales)
> >> by host.interavenuehosting.com with smtp (Exim 4.69)
> >> (envelope-from <claudio@sitconf.com>)
> >> id 1S7Uvm-0008KS-3q; Tue, 13 Mar 2012 12:50:38 -0400
> >> Message-ID: <872EF71E95BA453EA0F8870024C3A22A@sales>
> >> From: "Claudio D'Ulisse" <claudio@sitconf.com>
> >> To: "Errol Rosario" <errol@floridaseating.com>,
> >> "MIKE BERG" <mike@floridaseating.com>
> >> Subject: test
> >> Date: Tue, 13 Mar 2012 12:50:31 -0400
> >> MIME-Version: 1.0
> >> Content-Type: multipart/alternative;
> >> boundary="----=_NextPart_000_00E0_01CD0117.DFCD9440"
> >> X-Priority: 3
> >> X-MSMail-Priority: Normal
> >> Importance: Normal
> >> X-Mailer: Microsoft Windows Live Mail 14.0.8117.416
> >> X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416
> >>
> >> This is a multi-part message in MIME format.
> >>
> >> ------=_NextPart_000_00E0_01CD0117.DFCD9440
> >> Content-Type: text/plain;
> >> charset="iso-8859-1"
> >> Content-Transfer-Encoding: quoted-printable
> >>
> >> can you confirm you get this email please?

the maillog (/usr/local/psa/var/log/maillog) see log

a quick dns report – anything vital on there in need of attention? http://www.dnssniffer.com/en/report/advanced/floridaseating.com

SOLVED- response from Media Temple support:

Checking the domain names for an MX lookup, the IP address that was
returned was on our blacklist due to malicious activity. As there has
not been any recent malicious activity from this IP address, we were
able to remove the ban. You should be able to receive email from
sitconf.com / suite22.ca now. Please verify.

If you have any further questions regarding your (mt) Media Temple
services, please feel free to contact us at any time.

Best Regards,

Customer Support (mt) Media Temple 877-578-4000 310-564-2007
(mt) Current System Status: http://status.mediatemple.net (mt) User
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