Can someone please walk me through this configuration problem? We have a w2k3 server in a data center that is sending out automated emails (from the same @ourdomain.com address as our corporate Exchange 2003 Server). For the most part, we aren't having any issues except for some recipients are bouncing the emails back with a "550 Access denied - Invalid HELO name" error.
I just don't know the proper configuration settings on the virtual SMTP to prevent this from happening. I assume this is what prevents email spoofing, so there is likely something I need to set (and perhaps grant permission on from our Exchange Server?)
Help.. I am lost.