Hello, We have a small NT/2000 network (3 DCs and about 200 NT4 clients) and run IMail 7.13 on an NT4 BDC using the NT user database. The NT4 BDC is a PIII 866 with 256MB RAM and RAID5. IMail is lightning fast on this machine. For example, I can grab 1000 messages via IMAP in just about 10 seconds.
We recently have upgraded our PDC and another BDC to 2000/AD in compatibility mode. The new DCs are PIII 1.2Ghz, 1GB RAM, RAID 5. Only NT4 BDC left is the IMail box. This morning, I tried moving our IMail software to one of the new 2000/AD DCs. I installed IMail and patched it, stopped services on both old NT4 and new 2000 box, moved Ipswitch registry key and IMail folder to new box (changing appropriate IP and DNS references in registry export file first), changed MX and alias records in DNS and started services on new box. On the new box, mail is slower than [expletive deleted]. IMAP takes 30-60 seconds to refresh the view of any folder or download and read any message. Web interface takes at least a minute to log in. POP is slightly slower, but not nearly as bad as IMAP. I aborted the migration and put everything back to the NT4 box and it runs beautifully. Considering the network load has not changed in the last hour and there's a considerable hardware performance increase on the new machine, I can only assume that there's something about 2000 that is causing the problem. I remember having problems with the NT4 machine being really slow once and found that someone had cranked up the auditing in the security policy. I turned auditing back and it was fine. But nothing like that has been done on this virgin 2000 box. Any ideas what I can try? I still have IMail installed on the 2000 machine (but not running) so I can play with it to try different things. Please pass along any thoughts or ideas you might have. I really need to get this last NT4 machine upgraded so I can get out of compatibility mode. Thanks a lot!!! --Todd. To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
