On my otherwise rock-solid Mailcow instance, I have one high-volume domain relaying out to Amazon SES. The relaying works as expected, but mail.domain.com, (an A record set up for each domain on the box) no longer resolves securely for the one domain that’s relaying out. This despite there being a mail.* listing in the overall config file.
Things I’ve tried:
- Restarting acme-mailcow
- Changing the A record to a CNAME that points to the host box
Any suggestions much appreciated!