>The problem with that is UUNet is our PoP provider.  As far as I know (and
>I'm still waiting for a definite answer) UUNet leases IPs to all of its
>users from 1 pool of IPs.  That doesnt keep it very secure.  I'm going to go
>out on a limb and say UUnet has 25% of the damn Internet wired.  They are
>the biggest.

The "relay for addresses" setting is not to enable your users relay 
their outbound mail through you. It's to block unauthenticated spammers.

Your users have to use SMTP AUTH, on uunet's or anybody else' ip's, 
to send mail through your servers.

Len

http://BIND8NT.MEIway.com: ISC BIND 8.2.2 p5 & 8.2.3 T6B for NT4 & W2K
http://IMGate.MEIway.com:  Build free, hi-perf, anti-spam mail gateways

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