Hello everyone! Sorry if Im wrong about forum but... I have 2 domain contollers in the same local network.One of that domains have Microsoft Exchange Server installed (domain1 for example).I have also account on this Exchange Server (ostroukhov for example).I have accounts in both domains: domain1\ostroukhov and domain2\ostroukhov.Wide-domain trusting installed on both domain controllers (outgoing and incoming connections). Im trying to add permissions to my mail to accounts from both domains. domain1\ostroukhov is fine.Trying to add domain2\ostroukhov to permission tab of my mail (by searching in domain2 dir) - Full mailbox access. Its fine too: I can view any mail stored on the server.BUT! I cant send mail under domain2\ostroukhov account.Okey. Now Im trying to add domain2\ostroukhov to Send on Behalf section of my account on Exchange server. AND I cant see any account from domain2 directory. How is it possible, to see accounts from other domain in one tab, and can not see same accounts from another tab ? And how I can fix it ? Many thanks for replies!