>I've now unchecked the disable smtp auth. box, checked the box for denying
>null senders (I noticed a lot of the spam mail that went through the server
>had <> in the from field)

That's a common reflex, but it also means you won't accept valid bounced msgs.

>and set smtp security to allow local hosts only to use smtp.

This is useless.  Did you see the article today in wired.com that hotmail 
users are receiving spam "from themselves" ? ie, the spammers are spoofing 
the "mail from:".   relay for local users or local hosts is useless because 
all headers are spoofable.

>That aside I've tracked the originating IPs of a lot of the mail that was
>spammed through the server this weekend - gives me something to follow up on
>during slow days this summer.

tracing spam sources is very difficult.

Len

Len
http://BIND8NT.MEIway.com: ISC BIND 8 installable binary for NT4
http://IMGate.MEIway.com:  Build free, hi-perf, anti-spam mail gateways

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