We are trying to forward unresolved email from one server to another. I have done this numerous times and it has never failed until now.
We have unchecked the setting that makes that server responsible for all mail in that address space. We then tried entering both the IP (in brackets) then the FQDN under the smtp virtual adapter to forward all unresolved mail to the following host. We have even gone as far as creating an SMTP connector, adding the bridghead and the smarthost info and every time we get the good old relaying denied error when sending to a none existing account instead of the expected behavior of forwarding the message on to the new server.
The error is Action: failed
Diagnostic-Code: smtp;550 5.7.1 Unable to relay for
We have a mailbox on the final destination serverthat matches the address that we are trying to email. The frustrating and confusing thing is that the server bounces the unresolved address immediately. There are no local spam or filters in place. All filtering is done externally. Examination of the headers indicate that the bounce is indeed initiated by the server and nothing before it.
Anyone seen this behavior before?