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"552 (Spam Message Rejected ) (failed)"

SupportAtCTi
Newbie
Posts: 1
Registered: yesterday

"552 (Spam Message Rejected ) (failed)"

Hello,

Our customer Adams Estate Agents are replying to emails from customers of yours and recive back rejections. Their mail server reports it received the error "552 (Spam Message Rejected ) (failed)"

Checking at the Govenment email checker https://checkcybersecurity.service.ncsc.gov.uk/email-security-check it has a 100% pass, and at is not blacklisted by any of the site listed here https://mxtoolbox.com/.

What else would cause you to block them?

 

Thanks in advance

CTi Support

2 REPLIES 2
Townman
Superuser
Superuser
Posts: 25,130
Thanks: 10,787
Fixes: 190
Registered: ‎22-08-2007

Re: "552 (Spam Message Rejected ) (failed)"

Hi,

A warm welcome to the forums.

This needs one of the staff members for a formal response - @plusnettony might be around.

In the meantime, contrary to what the Government cyber security page reports, MXtoolbox suggests that the domain does not have a DKIM record published.  Reliance will then be placed on the SPF configuration; is the email being sent from a SMTP server in A&A's SPF list?

 

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

plusnettony
Plusnet Help Team
Plusnet Help Team
Posts: 2,257
Thanks: 203
Fixes: 22
Registered: ‎24-07-2014

Re: "552 (Spam Message Rejected ) (failed)"

I think we're going to need the full headers on this - if you can get the end user to contact us with headers/bounces, we'll see what we can do

If this post resolved your issue please click the 'This fixed my problem' button
 Tony T
 Plusnet Help Team