VPIM versus SMTP

Unanswered Question
Feb 26th, 2007

Is there a main difference between VPIM and SMTP for cross directory communcations for unified messaging? I have a customer moving to another windows AD domain and it will be a phased approach. What is the best solution for the Unity servers to be able to communicate? VPIM? SMTP?

I have this problem too.
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Brandon Buffin Mon, 02/26/2007 - 13:22

Support for SMTP Networking is being phased out, so VPIM is the recommended way to go. Both SMTP and VPIM networking rely on SMTP, but SMTP Networking uses a proprietary message format, while VPIM is standards based. Also, VPIM provides some features that are not available with SMTP. Take a look at the following link.


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