Dear, can you help me with this event(s) ? I've checked them on microsoft support site, but not listed there. I always got these problem. fyi, i'm using w2k adv server + sp3, ex2k + sp3, norton internet security. for the internet connection, i'm using leased line (utp directly) from our provider to our office. so, i only setup the ip, gateway and dns from our provider. w2k and ex2k in the same machine. i suspect the problem at the dns. awating advise. rgds, hery *********************************************************** Event Type: Error Event Source: Userenv Event Category: None Event ID: 1000 Date: 6/24/2003 Time: 4:43:53 PM User: NT AUTHORITY\SYSTEM Computer: SERVER Description: Windows cannot obtain the domain controller name for your computer network. Return value (59). ***************************************************************** Event Type: Error Event Source: MSExchangeDSAccess Event Category: Topology Event ID: 2102 Date: 6/24/2003 Time: 4:42:16 PM User: N/A Computer: SERVER Description: Process MAD.EXE (PID=2456). All Domain Controller Servers in use are not responding: server.pintumas.co.id For more information, click http://www.microsoft.com/contentredirect.asp. ***************************************************************** Event Type: Error Event Source: MSExchangeIS Public Store Event Category: Replication Errors Event ID: 3079 Date: 6/24/2003 Time: 4:28:08 PM User: N/A Computer: SERVER Description: Unexpected replication thread error 0x80004005 on database "First Storage Group\Public Folder Store (SERVER)". FReplAgent For more information, click http://www.microsoft.com/contentredirect.asp. ***************************************************************** Event Type: Error Event Source: MSExchangeIS Mailbox Store Event Category: General Event ID: 7200 Date: 6/24/2003 Time: 4:03:01 PM User: N/A Computer: SERVER Description: Background thread FDoUpdateCatalog halted on database "First Storage Group\Mailbox Store (SERVER)" due to error code 0x80004005. For more information, click http://www.microsoft.com/contentredirect.asp. ***************************************************************** Event Type: Error Event Source: MSExchangeIS Mailbox Store Event Category: General Event ID: 7200 Date: 6/24/2003 Time: 4:03:01 PM User: N/A Computer: SERVER Description: Background thread FDoUpdateCatalog halted on database "First Storage Group\Mailbox Store (SERVER)" due to error code 0x80004005. For more information, click http://www.microsoft.com/contentredirect.asp.