I replaced the $mydomain parameter in main.cf with $smtpd_banner. The smtpd 220 indicates xxxx.com which is great and 250 mail.xxxx.com which is, I don’t know but the gmail issues are fine. So, how to make this a proper edit ?
I am reading the custom template doc. I will see if I can make one adding $smtpd_banner and removing $smtpd_helo_restrictions (unless anyone know of a better way to handle Windows Outlook clients not having a FQDN)
Thanks !