When I first configured the server I used an email address as the "reply to" address of firstname.lastname@example.org. Then I setup a couple reports for email subscription delivery. They worked for a while, but after a few days started to fail. The message I get is:
Failure sending mail: The server rejected the sender address. The server response was: 554 Mail from email@example.com rejected for policy reasons.
The server is a Lotus Notes Domino server. I went back and changed the configuration to use my email address as the reply to address and ever since, it works sometimes (maybe 2 out of 5 times) and the other times I get the above error message.
I've looked at the server config files and verified the no-reply email address is not there at all. I've restarted services and the server, etc. But I still get some failures and some successes. I can't find a pattern to it.
Any ideas what is going on here and how to solve it?