Hi There,
We have Exchange 2010 Edge server and only one single user "username@domain.com" not able to receive email from external domains.
Error message copied from Event log:
recipient with routing address "username@domain.com" from the Active Directory failed with data validation error. The detail of the error is Microsoft.Exchange.Data.Directory.Recipient.NonUniqueProxyAddressError
Test-EdgeSynchronization -VerifyRecipient "Username@domain.com"
SyncStatus : Inconclusive
RecipientStatus : NotSynchronized - More than one recipient found in target Edge Server and may cause NDR on Edge server. RecipientStatus.ConflictO
1. We have used LPD.exe tool and did not find any duplicate email address in AD.
2. Also checked in through adsiedit.msc and found no duplicate email address.
After we modified the email address of that user "username1@domain.com" that works fine, but if I modify it back to old email address issues again reoccur.
guys please help, I believe there is a stale entry in Edge server which is creating the issue, but we are unable to locate it and remove that.