HI,
Since 1.17 update the email sending is not work for me. At first it turned to disabled and there is no any notification about it in the system. Than I turn it back, and now unable to send mail to gmail address, with this error:
This message was created automatically by mail delivery software.
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:
XXXXXXX@gmail.com
host gmail-smtp-in.l.google.com [142.250.27.26]
SMTP error from remote mail server after end of data:
550-5.7.1 [185.51.191.29] Our system has detected that this message is not RFC
550-5.7.1 5322 compliant: duplicate headers. To reduce the amount of spam sent
550-5.7.1 to Gmail, this message has been blocked. Please review
550 5.7.1 RFC 5322 specifications for more information. x21-20020a05640226d500b0044ebf99d6f9si17074189edd.263 - gsmtp
Any suggestion how to solve this error?
