From: LB (listservpcnetsources.com)
Date: Fri Jun 01 2007 - 05:48:07 CDT

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Greets ..

What's the best route to go when it comes to allowing users with devices
such as mobile devices, with dynamic IPs to send mail through my postfix
gateway.

Basically I have a setup where postfix is my front-end gateway to my
exchange box. There is an LDAP script which fetches all valid users from AD
and creates a valid recipients users list for Postfix to match against and
accept mail for.

I have 3 different users using windows mobile IMAP to retrieve messages on
their devices, there is no problem with this. Sending though is a different
issue. The devices randomly change IP addresses and it's impossible to
manage the IPs for allowing them to send through the gateway.

Obviously due to the reasons that the postfix box is the smtp gateway, and
it's not auth'ing to the Exchange box; auth is not supported at this end and
relaying is denied.

So what would be the best suggestion for a setup like this? Thanks..

BTW I'm running Latest postfix on OpenBSD 4.1

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Regards,

LennY

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