Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Thu, 04 Sep 2008 07:21:51 +0300

This is the Postfix program at host wall.deac.lv.

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:

  [email-masked]
    SMTP error from remote mailer after RCPT TO:<[email-masked]>:
    host mxgt.deac.lv [89.111.5.22]: 550 Previous (cached) callout verification failure

------ This is a copy of the message's headers. ------

From: =?koi8-r?B?9sHOzsE=?= <[email-masked]>
To: <[email-masked]>
Subject: =?koi8-r?B?8M/O0dTJxSDJztTFzMzFy9TVwczYzs/KINPPwtPU18XOzs/T1Mku?=
Date: Thu, 4 Sep 2008 07:21:48 +0300