Exchange 5.5 One of my users can not login to his mailbox. i checked the permissions on the mailbox and his user owns the mailbox. the user can login to the network. i tried to change the owner of the mailbox ( from exchange administrator ) to any user but still after few hours same problem persists. I opened the mailbox through my Exchange SA account and i also checked that the user permission is granted through permission tab on the exchange admin. I have 2 exchange 5.5 on 1 site ( both on the same LAN ). what should i do ??? Noam Lerer System Administrator Taldor Group 13th Hayezira St, Petah Tikva. Tel : 03-9298331 Mirs : 057-772975 mailto:noaml@xxxxxxxxxxxx