I have two sites, both with Domain Controllers and Exchange servers. When I atempt to create a mailbox for a user from site 'A' (logged on as a Domain Admin) I can create the mailbox on either Exchange server. When I log onto the site 'B' Exchange server, using the same credentials, I can not create the mailbox on either server. I get the following error from the wizzard: </createMailbox> <taskSummary errorCount="1" completedCount="0" warningCount="0" errorCode="0x00000000" /> - <items> - <item adsPath="TEST, GAL" class="user"> <progress code="60" milliseconds="15047">Updating attributes</progress> <summary isWarning="false" errorCode="0x8007052e">Logon failure: unknown user name or bad password.</summary> I tried a "Run As" using the builtin domain admin account and received the same results. Replmon reports the sirtes are in sync. Anyone have and suggedtions. Thanks \ Russ G

Exchange 2003 or 2007? What server roles in each site? Is replication working properly between sites? You can test this with replmon.