Hi,
we upgraded from Exchange 2007 to Exchange 2013.
Our old 2007 Frontend still acts as a SMTP Relay to forward emails from legacy devices (storages, printers etc) to our new Setup.
Everything works fine except emails that are having an unroutable Mail From: address (ie. user@machine), no FQDN.
They are forwarded fine to the new setup, but i believe EXC2013 does not accept emails like this.
Unfortunately this sender address is hardcoded and can not be changed easily at this point. Is there any solution to this?
Thanks a lot
Sascha