Just treat those people as any other roaming users, using SMTP AUTH to send to your Imail server. In fact, having a single, universal policy that applies all users, even if they are on local DULs, must use SMTP AUTH is the simplest.
The problem with this is that every user has to be notified, about 20,000 of them, and it would be a tech support nightmare. I bet if I did this, I'd be looking for a new job. Our users aren't always the smartest bunch, and to turn that on would cause a nightmare.
Keith R. Mangold
WebMaster / Web Demolitions Expert
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linkLINE Communications, Inc.
PO Box 424 - Mira Loma, CA 91752
888.254.6587 Ext: 5060 Voice
909.727-0275 Fax
