Catchall email alias no longer receiving mail

OS type and version Debian 10
Webmin version 1.990
Virtualmin version 6.17-3
Related packages not sure

I have a situation. Suddenly my catchall email is not receiving emails. The sender gets NO bounce back… in one case a sender received after a day or so, that his email could not be delivered.

I looked at the mail.log but nothing helpful.
The only thing I had noticed recently was a spam assassin error… but then I rebooted the server and everything started running fine… I started receiving emails again for a few minutes and now it stopped receiving emails.

It does not seem to give an error.

I have a second email with a different email user on the same mail server that seems to be working fine…

By the way I can send emails fine from both email accounts (regular one and catchall mail alias one)

Any pointer as to what the issue is and where to look? Thank you.

If there’s really nothing in the maillog, then the mail is never reaching your server and it’s a DNS problem (though if other mail for the same domain is arriving, that can’t be). I suspect you just aren’t looking carefully enough at the log.

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