I have an exchange server and around 200+ accepted domains (managed service company).
I would like to set up a catch all for postmaster@* I tried doing so via transport rules, but exchange seems to be rejecting the messages "The e-mail address you entered couldn't be found" prior to applying the transport rule
Server: 2008 R2 running Exchange Server 2010 SP3
Test Transport rule:
- Conditions: When a recipient's address matches
- Actions: send rejection message
BEACONto sender with enhanced status code
5.7.777(this would eventually become "redirect the message to address")
Are transport rules the/a correct choice here? Am I correct in guessing that it's checking address validity BEFORE matching a transport rule? Do any of the transport rule conditions get checked before mailbox existence is checked?
Note: I'm open to changing approach if I should be using something other than transport rules
Note: This is not a duplicate of 119649