[ANR]

Oleg Krylov, Rebuild OAB тоже делал.

Кстати, вот что обнаружил в Eventlogax

Event Type: Warning Event Source: MSExchangeDSAccess Event Category: Topology Event ID: 2116 Date: 16.11.2008 Time: 12:10:17 User: N/A Computer: MAIL1 Description: Process STORE.EXE (PID=2224). The Domain Controller dc2.domain.az is running (Unknown Operating System) (Unknown Service Pack). DSAccess requires that Domain Controllers that run Windows 2000 have at least Service Pack 3 installed. For more information, click http://www.microsoft.com/contentredirect.asp.

и вот это

Event Type: Warning Event Source: MSExchangeDSAccess Event Category: Topology Event ID: 2112 Date: 16.11.2008 Time: 12:10:17 User: N/A Computer: MAIL1 Description: Process STORE.EXE (PID=2224). Exchange Server mail1.domain.az does not have Audit Security Privilege on Domain Controller dc2.domain.az. This Domain Controller will not be used by DSAccess. For more information, click http://www.microsoft.com/contentredirect.asp.

возможно, это является причиной ошибки? что скажете?

на dc2.domain.az стоит Server 2003 R2 SP2, так же как и на mail1, только на mail1 стоит просто Server 2003 SP2 (не R2).