I got this weird problem at work. We run NT 4.0 fully updated and MS Exchange server 5.5 also updated. Email systems are working fine internally but when people try accessing their mail from home via Outlook Web Access, it just hangs after typing in the user name/password. It just acts like its loading but nothing ever happens. Here's the weird part. If I reboot the entire server, everything is fine for a couple of days, then its back. Anyone ever encounter this? I turned the problem over to our network engineer, but he hasn't been able to fix it either. He thought he fixed it , but it returned within 3 hours after he left. Thanks in advance.