allowlisting: Find Outbound Header for Message Marked As Spam

[ChrisfromISB]

A local institution is bouncing our inbound emails with the following error:

Rejected by recipient's email security filter

SPAM smtp; 554 rejected due to spam URL in content

If this is a mistake please have the recipient's IT team make an exception by allowlisting

How do I find the necessary information in order to ask them to allowlist us?

I provided the complete message header from a succesful inbox, but they advise that: 

"Hello 
I have checked our anti-spam appliances for any blocked messages with  "hubspotfree.net" and "*******.com".  We found no messages with your domain plus hubspotfree.
Please provide the complete bounce-back error message.
Thank you"

What else can I offer them as a method of allowlisting us?

[karstenkoehler]

Hi @ChrisfromISB,

This article has instructions on how to find and share the IPs for allowlisting: Add marketing email sending IP addresses to an allowlist

Best regards!

[ChrisfromISB]

The recipient institution is still making a determination whether they will allowlist and at the same time they cannot see our bounced pieces in their mailboxes. What information can I provide them that will help with locating our mail pieces?

[karstenkoehler · Accepted solution]

Hi @ChrisfromISB,

I'm not aware of a more detailed log that you could export from HubSpot that would provide more information than you already have. If the IT team decides they don't want to allowlist these IPs, that's where you'll stay stuck, unfortunately.

This is unfortunately an issue on the receiving end and there's little that you can do except upgrading to a paid license and connecting your own email sending domain.

Best regards