How-To: Fix Mail Server Fully Qualified Domain Name problems
Apr.28, 2008 in
How To
We have been having problems sending emails from our mail server (running Kerio) to a particular domain over the past few weeks. We kept receiving bounce emails with the following:
550 Rule imposed. Sender using invalid hostname
in greeting as per RFC specification.
After trying all manner of solutions, it turned out to be a problem with our Kerio setup. [...]
