Hi,
I have seen this before, once:
Received: from P94965F3E.sigplc.co.uk ([10.254.4.17])
(envelope-sender <#@[]>)
by 10.254.4.160 with ESMTP
for <ret-uid=SNIPPED_d=ccg...@bounces.mailplus.nl>; Sat, 26 Jul
2014 19:17:55 +0100
Received: From SIG-MAIL01.central.sigplc.co.uk ([10.254.4.6]) by
P94965F3E.sigplc.co.uk (WebShield SMTP v4.5 MR3)
id SNIPPED; Sat, 26 Jul 2014 19:17:53 +0100
Received: by SIG-MAIL01.central.sigplc.co.uk (Postfix)
id SNIPPED; Sat, 26 Jul 2014 19:17:53 +0100 (BST)
Date: Sat, 26 Jul 2014 19:17:53 +0100 (BST)
From: mailer-dae...@sigplc.co.uk (Mail Delivery System)
Subject: Delayed Mail (still being retried)
So, Webshield SMTP ?
David Hofstee
Deliverability Management
MailPlus B.V. Netherlands (ESP)
Van: mailop [mailto:mailop-boun...@mailop.org] Namens Brandon Long
Verzonden: Thursday, June 18, 2015 2:00 AM
Aan: mailop
Onderwerp: [mailop] weird envelope sender
Anyone familiar with software which uses #@[] as the MAIL FROM argument? Is
that some software's version of an empty bounce address?
Brandon
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