On Thu, 23 May 2002 measl@mfn.org wrote:
<ramble> You hit it dead on: use all the tools at your disposal, but preemptively "whitelist" your customers. Unfortunately, the whitelisting isn't always as easy as it sounds. If they are within your IP space, you're good to go, but if they have the rare portable block, or they are multihomed, etc., you need to be more careful. </ramble>
In Short: Whitelist like crazy, and then blacklist like mad!
We do both...but I wouldn't say whitelist like crazy. More like whitelist as needed, and find a blacklist or one of the message body parsing utils you like...or both. For the rare emergency when a customer (or non-customer) needs to talk to our NOC and can't get email through, we have these neat things called telephones. They work pretty well. In fact, I think mine often works too well. -- ---------------------------------------------------------------------- Jon Lewis *jlewis@lewis.org*| I route System Administrator | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________