Hi all. There is something that is driving me nuts with outbound mail routing on 
Exchange 2000.

Scenario 1. I have one a few back-end Exchange 2000 servers and two front-end Exchange 
2000 servers. All are in the same admin group and in the same routing group. There are 
two IMCs. IMC#1 only has FE server #1 as a bridgehead. IMC#2 only has FE server #2 as 
a bridgehead. Both IMCs have address space SMTP:* with cost 1.

I would expect the back-end servers to give some outboud mail to FE #1 and some to FE 
#2.

However a back-end only picks one front-end and only sends outgoing mail via that 
front-end.

Also I have seen cases where that particular front-end becomes unavailable yet the 
back-end does not start using he other front-end.

Is this normal? I thought link-state routing was smarter than that.

- I also tried having only one IMC with both front-ends as local bridgeheads but that 
did not change anything)
- I prefer having two separate IMCs - this way I can juggle mail if necessary by 
adjusting the cost of the address space.

Scenario 2. I have three Exchange servers in a separate administrative group/routing 
group. They are only used as SMTP relays for our Imail servers (because Imail chokes 
on large queues). They also relay mail from our customer's websites.
Again, there is an IMC per server. Each IMC has address space SMTP:* with cost 1. The 
scope of IMC is the routing group.
Usually they happily relay e-mail that comes their way.
However sometimes they freak out (or get lazy) and instead of relaying mail they are 
trying to give it to their neighbor within the routing group.

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