Undelivered Mail Returned to Sender

Tue Jul 3 20:29:49 EDT 2018

This is the mail system at host mail.surebox.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<destek at tegeme.com.tr> (expanded from <destek at tegeme.com>): user unknown.
    Command output: Invalid user specified.
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An embedded message was scrubbed...
From: <security at pidgin.im>
Subject: ***SPAM***New offer
Date: Wed, 04 Jul 2018 13:29:43 +0600
Size: 3596
URL: <https://pidgin.im/cgi-bin/mailman/private/security/attachments/20180704/6c826a00/attachment.mht>