Spam from Specific Domain

[aarango]

Hello,

One week ago, I am looking a lot ofs email on my queue from : [email protected] in 2 our servers.

All emails are returned to from but in server I can't see if any account had been cracked and used for spam.

Example:

# exim -Mvl 1VoDPs-002etC-0p
2013-12-04 14:27:06 Received from <> R=1VoDPr-002esv-6P U=mailnull P=local S=20356 T="Mail delivery failed: returning message to sender"
2013-12-04 14:27:06 [email protected] R=dkim_lookuphost T=dkim_remote_smtp defer (-53): retry time not reached for any host

# exim -Mvh 1VoDPs-002etC-0p
1VoDPs-002etC-0p-H
mailnull 47 12
<>
1386167224 0
-ident mailnull
-received_protocol local
-aclc _outgoing_spam_scan 1
1
-body_linecount 294
-max_received_linelength 273
-allow_unqualified_recipient
-allow_unqualified_sender
-localerror
-spam_score_int -18
XX
1
[email protected]

150P Received: from mailnull by SERVER with local (Exim 4.82)
id 1VoDPs-002etC-0p
for [email protected]; Wed, 04 Dec 2013 14:27:06 +0000
118 X-Failed-Recipients: [email protected],
[email protected],
[email protected],
[email protected]
029 Auto-Submitted: auto-replied
069F From: Mail Delivery System <Mailer-Daemon@SERVER>
019T To: [email protected]
059 Subject: Mail delivery failed: returning message to sender
058I Message-Id: <E1VoDPs-002etC-0p@SERVER>
038 Date: Wed, 04 Dec 2013 14:27:04 +0000
039 X-OutGoing-Spam-Status: No, score=-1.9

All emails are same, and in a day I can have around 1000 emails so.

Could someone help me with this?

Best Regards

 

[cPanelMichael]

Hello

Have you checked to see if that email account exists on your system? If so, have you tried changing it's password and removing any existing emails related to it from the mail queue?

Thank you.