Hi, I am migrating users accounts from DomainA to DomainB. All is going well apart from when the migrated user goes to reply to an old mail in their mailbox and it give the error message below. I had contacts in DomainB for the users before they are migrated and once I run the prepare move powershell command the contact gets deleted. I have read when it is the LegecyExchangeDN but I have note this setting before the migrastion and its included in the users emails address after the migration as a X500 address. 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. < #5.1.1 smtp;550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found> Thanks

any ideas out there !!!!

If you use Domain A Emails in Domain B And Reply an Email of Domain B You will have this problem Nothing can't be done on this case X500 Won't work on this Scenario as well Thanks Satheshwaran Manoharan | Exchange 2003/2007/2010 | Blog:http://www.careexchange.in | Please mark it as an answer if it really helps you

Hi Did you try Satheshwaran's suggestion? Also you could refer to the thread http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/de7b1ba5-28de-4f63-ba9e-18a8ec312701/ Cheers Zi FengZi Feng TechNet Community Support

Hi, Satheshwaren's suggestion was it won't work .... I find it hard to beleive that there is no work around for this as hurdreds of MS customers will be migrating to different domains ....

i tried deleting the .nk2 file but no joy.

On Fri, 17 Feb 2012 12:19:18 +0000, okwiththat wrote: >any ideas out there !!!! Whatever X500 address you put into the E-mail Addresses tab wasn't the right one. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

got it working ... went to source domain and copied the LegecyExchangeDN attribute off the non-migrated account, then went to the source domain and added this as a x500 to the contact that corresponds to the account.<o:p></o:p> now i used ldife to export all the LegecyExchangeDN from the accounts in the source domain, but does anyone know how to import these into AD as a x500 for all the corresponding contacts ??