I get the following two event ids on my email server. Has anyone experienced this problem before? Many thanks for any help.... Event Type: Error Event Source: Userenv Event Category: None Event ID: 1000 Date: 2/24/2003 Time: 11:50:26 AM User: NT AUTHORITY\SYSTEM Computer: CCMMAIL Description: The Group Policy client-side extension Security was passed flags (17) and returned a failure status code of (1332). And Event Type: Warning Event Source: SceCli Event Category: None Event ID: 1202 Date: 2/27/2003 Time: 3:06:39 PM User: N/A Computer: CCMMAIL Description: Security policies are propagated with warning. 0x534 : No mapping between account names and security IDs was done. Please look for more details in TroubleShooting section in Security Help. Thanks, John