13.06.2020, 14:42
Obviously function works fine. Further to many test it seems that the problem occurs when system sends mail to those providers which checks the
compliance RFC. Google, microsoft outlook 365 and Zimbra. When I send mail to those destination receiver does not receive the mail.
My smtp server gives me this error:
550-5.7.1 not RFC 5322 compliant:
550-5.7.1 'From' header is missing.
550-5.7.1 To reduce the amount of spam sent to Gmail, this message has been blocked. Please visit .....
I am trying to find out a solution.
compliance RFC. Google, microsoft outlook 365 and Zimbra. When I send mail to those destination receiver does not receive the mail.
My smtp server gives me this error:
550-5.7.1 not RFC 5322 compliant:
550-5.7.1 'From' header is missing.
550-5.7.1 To reduce the amount of spam sent to Gmail, this message has been blocked. Please visit .....
I am trying to find out a solution.