[ActiveDir] OT: WLBS and Exchange 2000

[Marc Zukerman]

All, I apologize for continuing the off topic posts. However, I think this may be a good place to get an answer.   I'm getting a very perplexing problem with Exchange 2000 SP3, Win2K SP3 and WLBS. We have 2 front end servers and 3 back end servers. For about a half hour, we were able to get them working no problem. The front ends each have 2 NICs, one for direct connection (unique IP) and one for WLBS (shared IP w/ load balancing). WLBS on each server is setup as follows with the shared IP as the only IP running on its adapter. In addition, the host headers on the Exchange Virtual Server are set up with the DNS name of the WLBS.   It originally worked like a charm and then after about a half hour, the servers had connectivity problems. It's a pre-staging lab so I restarted the machines. Then the System Attendant wouldn't start. Even if done manually. I was getting 2102 errors saying that the server couldn't communicate with the global catalog (pre-stage lab has one DC which is a GC). 2 Backend clusters (running MS cluster service) could communicate fine. Everyone could ping everyone, even the problem servers. The load balanced IP was registered in DNS and WINS correctly.   I disabled the adapters that were running WLBS and rebooted the machines. Exchange came up like a charm. No problems.   I reenabled them again and rebooted. Same problems.   Does anyone have any suggestions? I'm open and tapped out of ideas.   Thank you, Marc Zukerman