if you use Exchange 2007 only on test machines for your articles you should disable the backpressure feature. On production machine you should have enough capacity or you should modify the existing parameters.

regards Marc

Thanks! I think that’s what the problem was, as I saw a number of messages related to “backpressure” in the Event Viewer.

Do you think it will work if I turn off the backpressure feature in the XML file?

Thanks!
Tom

Thanks for the info on the Exchange 2007 Deployment Guide, I’ll have to check that out.

I agree that the SMTP verb and TLS information was mighty thin in the ISA doc.

Thanks!
Tom

I’ve used a combination of your multiple networks guide (albeit a 2004 guide, most seems to apply for 2006), this guide for publishing the client access stuff and the Deploying a Standard Exchange Server 2007 Organization guide (500 page monster, but most of the useful information is from the deployment section…..)

Its interesting that the recent ISA2006 fix for E2K7 didnt also add the verbs and protocol objects the verbs in particular dont seem to be well documented..

this Exchange feature is called “Backpressure”. You can use Exchange 2007 32 Bit in virtual machines but you must have sufficient resources (RAM, free hard disk space and more). You can customize / disable the Backpressure feature when you are editing the EdgeTransport.Exe.Config (yes also on the HT role)

You can read more about the Back pressure feature here:
http://technet.microsoft.com/en-us/library/bb201658.aspx

regards Marc (aka Jens Baier)