Hi,

I hadn't received any e-mail on my Exchange server today and after sending a test e-mail from a web based mail system, I received an immediate error back "550 No such user here - AD".  I checked the Xeams logs and noticed that Xeams upgraded in the early hours of the morning to build 5958 and no mail was received after that time.  After a bit of troubleshooting, I managed to get incoming mail working again by disabling the "Reject Invalid Users" option in the "Active Directory Integration" configuration. 

Has something changed or broken with this build which prevents incoming mail when the "Reject Invalid Users" option is enabled?  I'd really like to have this option enabled.

Regards,

Cameron