On 8/14/2013 10:56 AM, Nigel Smith wrote:

>YOu're rule sort of dangerous as it may list PBL stuff on non
>last-external, etc,

Sort of dangerous ? It works beautifully for us ! Until the recent issues with Bigfish we've had zero false positives and many many many good catches !

I'm only following the guidelines at http://www.spamhaus.org/whitepapers/effective_filtering/ where they state "The first stage is to install the Spamhaus Zen <http://www.spamhaus.org/zen/> blocklist on your incoming mail relay(s). Zen, which is a combination of Spamhaus's SBL, XBL and PBL blocklists"

Right ... "On your incoming mail relays" ...

This is referring to using it as a blacklist for incoming connections where it is only checking the IP address of the system making the connection. If you use it in SA where it can check other IP addresses in the headers, it can be dangerous.

Entries in the PBL should not be connecting directly to your server, however there is no problem with them being in the other received headers.

--
Bowie

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