Answer
GMS Anti-Spam has run the domain or global MML script on this message and that script has requested that the message be rejected.
In this case, session Undefined is processing a connection from Undefined which was processing email apparently from Undefined for Undefined (if there are multiple receipts for the message, this is the first recipient). GMS sent the response
Undefined
If this message should not be rejected, you will need to investigate the script that requested the message be rejected. Please note that Gordano do not provide support for any MML scripts.
See Also:
- What Is Mail Meta Language (MML)?
- How do alerts work?
- What is a script?
- What is SMTP Response Code Theory?
Keywords:global domain script MML 8100