Re: FE-BE Server Distribution Lists

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Regarding relaying - are you sure the senders are authenticating correctly?
The fact that adding their IP addresses allows them to relay means they're
not authenticated.
--
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
www.exchangepedia.com/blog
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"Red Cross" <redcross1@xxxxxxxxx> wrote in message
news:1169133536.684559.242660@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Hello,

I have a front end 2003 exchange server and a back end 2003 exchange
server.

I have an SMTP virtual server accepting in mail, and the SMTP connector
configured with the FE VS as the bridgehead.

My problem is when people send to global distribution lists from
outside of the organisation they sit in the FE SMTP Mailbox and cause a
x.400 message loop.. I have managed to research this problem to
discover if I go in and manually set the distribution group expansion
server to the BE, then people sending to the distribution group works
fine, otherwise doesnt work.

As mentioned this is a pure Exchange 2003 environment running in native
mode. The suggetion from microsoft to set the expansion server to the
backend was related to exchange 5.5 to exchange 2003 connectivity..
Surely a front end 2003 exchange server can expand distribution groups
for delivery to the back end on its own? I have hundreds of groups so
its not acceptable to just manually change this settting on each group.
'Any' should work I would think.

On another note, people trying to relay from external using valid
crendentials are getting 5.7.1 unable to relay.. I have got
authentication set as integrated and basic against my domain, yet it
still fails.. I have to add their IP address in to allow it to relay..
I am starting to suspect the problems might be related.

Any help would be much appreciated...



.

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