Has AD replication had a chance to fully complete? Something like this should locate the object: Dsquery * forestroot -filter "proxyaddresses=smtp:timbomatic@xxxxxxxxxx" Or Dsquery * forestroot -filter "mail=timbomatic@xxxxxxxxxx" From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Exchange Mailing List Sent: Monday, October 12, 2009 3:08 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] RESOLVER.ADR.ExRecipNotFound; not found ## Hi I deleted one of my users mailboxes from exchange 2007 and from aduc. He is using the same email address on his new server but when I try to send mail from exchange I receive the error below. Obviously the email address is still hovering about within exchange. How do I locate it & remove it for good? All the usual steps have been carried out, ie deleting the nickname etc. Thanks Steve IMCEAEX-_O=OPTIMUM+20I+20T+20SOLUTIONS+20LTD_OU=EXCHANGE+20ADMINISTRATIVE+20 GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=Timbomatic@xxxxxxxxxx #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##