I recently installed Exchange 2010(all roles on one server) on a 2008 R2 server. Upon initial install, I was able to bind to port 25 and issue:
mail from:<some external email>
and receive Sendor OK. I also, via static DNS entries, send and received email just fine. Now, 3 days later when I am ready to change the DNS, no matter what from recipient I use I get the following error from the exchange smtp service:
530 5.7.1 Client was not authenticated
Undoubtedly, it will be recommended I make sure Anonymous is checked on the inbound receive connector. It is definitely checked.
This is on a Vsphere ESX server with all the appropriate specs outlined by Microsoft on the virtual server.
The firewall is a Cisco ASA 5505 and I have disabled any SMTP inspection. The firewall is plugged directly into the same L3 core switch the ESX server is, and there is no ACL or upper layer protocol voodoo enabled.
I have poured through as much documentation and forums as I can, and I can't seem to find anyone else with this issue if they have Anonymous checked.
Any help would be greatly appreciated as I simply can't figure it out!!!