hello. I think I have a dns issue that is causing emails to outlook customers to fail. when i send and email to an outlook hosted address, I get the following response:
This is the mail system at host mail.myserver.com.
####################################################################
# THIS IS A WARNING ONLY. YOU DO NOT NEED TO RESEND YOUR MESSAGE. #
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Your message could not be delivered for more than 4 hour(s).
It will be retried until it is 5 day(s) old.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<user@example.com>: Host or domain name not found. Name service error for
name=example-com.mail.protection.outlook.com type=AAAA: Host not found,
try again
I thought this was a simple DNS resolution issue, but I have done dig commands from both the host, and the acme container and they both pass with no issue. The host is not firewall’d
My network does not have ipv6 enabled, and ipv6 is fully disabled according to the mailcow documentation. The ipv6-nat container does not start.
I am running pihole, but have disabled it with no different results.
Happy to post whatever anyone needs to inspect, but I am out of places to look.