Reply by email address broken

Thanks for the reply…

I referred to that address as your example of what was working.
I don’t use gmail or domain.com

Yes, I have my own mail server with 4 related addresses 3 of which are forwarded to the 4th. The 4th is polled by discourse.

Two of forwarded emails are used on Group A and the 3rd is used on another Group B. This works without issue except replying my email to the specific message is not yet setup hence my question.

So in my case:

The polled domain is meta@mydomain.com
Reply by email address is replies+%{reply_key}@mydomain.com
replies@mydomain.com is forwarded to meta@mydomain.com

An example “Reply to” in a resulting group message email is: replies+f33496547209ecb9f2006a4172d5840c@mydomain.com
Replying yields the [Repeal OBBBA Forum] Email issue – Unknown To: Address message

Been scratching my head for numerous hours sorting this out. Any suggestions would be appreciated.

Note: I am guessing I should have posted elsewhere, not in an old Bug thread.