It seems that users are unable to send email to gmail addresses becasue of something to do with ip6
Is there a way to switch off the IPv6 part of the mail server?
Or is there a better way to resolve this issue?
[ip6 address] Our system has detected that this message does not meet IPv6 sending guidelines regarding PTR records and authentication.
Please review (incomprehensible pages at an url) for more information
- Sympl Version [10.0]: 11
- Sympl Testing Version? [Yes/No] no
- Debian Version [Buster/Stretch]: bullseye
- Hardware Type? [Dedicated/Virtual/Pi] dedicated
- Hosted On? [name of hosting co] mythic beats