hb_SendMail vs GMAIL

[roberto.p...@gmail.com]

Hi All,

I send automatic notification mails using hb_sendmail.

Since last weeks, GMAIL recipients messages are returned with the following error:

This is the error message:

"Mail delivery failed: returning message to sender"... "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:"... blah blah blah...
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [...] Messages missing a valid messageId header are not 550 5.7.1 accepted. ... - gsmtp

It appears to be some anti-spam control or something like that...

Any idea/workaround?

Any help is welcome.

TIA.

Regards,

Roberto

[Jack Tearle]

Seems gmail thinks your email is spam.  Maybe the following will provide a solution.

https://www.mailenable.com/forum/viewtopic.php?f=14&t=44427

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