Exchange 2003 SMTP Connector recipient restrictions/filtering   

I have a situation where I have to provide email connectivity over a
low bandwidth (64k), unreliable satellite connection to approximately
400 users. I have configured two SMTP connectors between my main site
and an Exchange 2003 server at the remote site. One connector is for
general transport and has a
message size limit of 50k, the other connector is meant to be used for
5 users who need to be able to receive large messages up to 2MB in
size. I'm having problems with figuring out how to block or allow
transport over the
connectors by recipient address. The incoming emails can be from
anyone internal or external (internet) and have to be filtered based
on size and recipient. If they are under 50k, they get sent over the
first connector (lowest cost route) and if they are to one of the 5
special users, they should be allowed over the 2nd connector to allow
the increased message size. Exchange 2003 only allows one global
recipient filter, so I can't use it as the sort method. Is there any
other way to route or allow based on the recipient address? Any
suggestions or ideas?

My only thought right now is to manually create a huge recipient
filter containing all internal addresses at the remote site except for
the VIP users and apply it to the large message SMTP Connector. It
would prevent delivery of large messages to any of the non-VIP users
over that connector, but seems very backwards, as well as being a huge
administrative nightmare and bad solution, even if it would work.

I guess what I'm trying to find is a connector based Permit filter for
specific recipients, rather than the Deny that the built-in recipient
filter has.

Thanks,
Scott


I have to use SMTP connectors as Routing Group Connectors have even
less
filtering/routing options.

Thanks,
Scott

date: Tue, 8 Apr 2008 12:23:07 -0700 (PDT)   author:   unknown