Hi,
I have ASG 8.201 with Web Application Security enabled. One of my virtual web servers fronts an Exchange 2010 SP1 installation, and my users access OWA and ActiveSync through that virtual server. OWA works fine, as does Active Sync from Microsoft Outlook and iOS clients. It also works most of the time with the Mac Mail app (both Snow Leopard and Lion). However, I've had a couple of instances where User A, having been happily accessing their mail via Mac Mail and other devices, brings up Mac Mail only to see User B's mailbox. The most recent time this happened, it was upon relaunching the Mac Mail app after it had crashed, but this could have been a coincidence. In this case, an OS reboot cured the problem.
I'm not quite sure how to pinpoint the issue since it's so infrequent. About the only thing I can think of doing is routing port 443 traffic directly to my Exchange server and bypassing the Astaro WAF, just in case there's some incompatibility between the two. This would be tough to prove though. I don't see how the issue could be with Mac Mail, as it would imply it's somehow accidentally impersonating User B when that user has never even been set up on that machine; only User A has been configured. If this were an issue with Exchange itself, I'm sure alarms would be going off everywhere. The other possibility is a WAF and/or Exchange and/or Mail client configuration issue on my part, but I've followed all the recommendations from Astaro in setting things up, and the mail client part is quite simple.
Has anyone else seen this behavior? Just wondering if someone can point me in the right direction.
Many thanks,
Martin.
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