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Email Blocked

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#1 Ste

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Posted 16 April 2019 - 08:24 AM

Hi email from domain name writingonthewall.org.uk is being blocked by domain thewo.org.uk.

No problem sending email elsewhere.

SPF, DKIM & DMARC records set up for the domain name.

Can you please advise.


From: Mail Delivery System

Sent: 16 April 2019 13:38

To: xxxxxxxx@writingonthewall.org.uk

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:



    host d206469.a.ess.uk.barracudanetworks.com []

    SMTP error from remote mail server after end of data:

    550 permanent failure for one or more recipients


#2 Ben Bartle

Ben Bartle
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Posted 23 April 2019 - 06:06 PM

I think you meant to post this on the Email Security Service portal. WSG does not generally effect mail flow. 

Ben Bartle

Product Manager - Web Security Gateway

Technical Marketing Engineer 

Content and Network Security @ Barracuda Networks