We recently got a whole bunch of event log error ID 4031, source: MSExchangeIMS, SMTP Interface Events, saying that something like the target server reported error 550, unrecognized user, or relay denied, or recipient not exist, any idea?
What is common situation that this error will come up?
We do not allow relay, only to our specified domain. Platform: Exchange 5.5 with sp4 on WIndows 2000 AS, sp2.
If managing Active Directory using Windows Powershell® is making you feel like you stepped back in time, you are not alone. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why.