yesterday i moved user's echange mailbox from server A to server B. server A is on domain A and site A. and server B is on domain B and site B. after a couple of day, there is an error if someone (from domain/server A) sending message to that user, that already moved to server B. but if there is some one sending him message from server/domain B, there is no problem at all. here is the error report: The following recipient(s) cannot be reached: *** Name*** on 8/13/2010 7:56 PM The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address. <***exchange server A*** #5.1.1> is anyone here can help me? thanks for your attention Wahyu Bhaskoro

Hi Which server versions are you using? They are in same organization? Have you verified the mailflow between the servers? Also do a ExBPA and post if there are any issues/warnings in this threadJonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

On Mon, 16 Aug 2010 04:06:43 +0000, Wahyu Bhaskoro wrote: > > >yesterday i moved user's echange mailbox from server A to server B. server A is on domain A and site A. and server B is on domain B and site B. > >after a couple of day, there is an error if someone (from domain/server A) sending message to that user, that already moved to server B. > >but if there is some one sending him message from server/domain B, there is no problem at all. > >here is the error report: > >The following recipient(s) cannot be reached: > > > > *** Name*** on 8/13/2010 7:56 PM > > The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address. > > <***exchange server A*** #5.1.1> > > > >is anyone here can help me? thanks for your attention Does the information in domain A agree with the information in domain B when describing the location of the mailbox? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP