Valid emails to plus.com accounts being rejected as spam

[#1]

Hi,

Hopefully an admin can help with this, or can someone point me in the right direction....

We are a small theatre and our confirmation emails to our plus.com customers who have purchased tickets are being blocked as spam:

Reporting-MTA: dns; d218-17.smtp-out.eu-west-2.amazonses.com

Action: failed
Final-Recipient: rfc822; @XXX.plus.com      (email address removed)
Diagnostic-Code: smtp; 552 Spam Message Rejected
Status: 5.3.0

Our domain is not on any of the spam lists and these emails are getting through to our other customers. It just seems to be an issue with plus.com addresses and also users who host their own domains on plus.com servers. (The issue is getting worse because it's starting to affect emails going directly and not just the emails that are going via Amazon.)

Any thought/help would be very much appreciated.

Thanks in advance, Jeremy

[#2]

Do you have a valid DKIM and SPF record configured? 

[#3]

@NickBS 

Hi Nick,

Can you get B2B engagement here please?

[#4]

I'll query with the product owner but would suggest raising into PN tech support, so a ticket can be raised and investigated properly through the relevant channel. 

Only known issue i'm aware of is with gmail addresses, so think this one could be an isolated issue. 

[#5]

Nick,

This is a case of another business encountering bulk rejection of their outbound emails to Plusnet’s customers. As such they do not have an account against which to raise a support query. The forums offer their only route into the support space. Issues such as this tend to be beyond the scope of first line forum support and need to be ‘sponsored’ into tech support.

Such tended to be done by the SMEs when they were allowed to lurk and help around here.

[#6]

Thank you to all who have commented on this, your assistance and thoughts are very much appreciated. Hopefully someone can get Support to look at why millatsonning.com domain is being blocked by the servers.

The domain has DKIM/SPF/DMARC all confiigured. Yours are the only mail servers who are actively blocking us.

I'd be very grateful if someone would "sponsor" this to tech support.

Cheers.

[#7]

Hi @Jeremy-MAS Can you pop me a private message with the full bounce back error and the headers please and I can get this raised to our back office team.