294604Re: Three trivial filtering questions
- Aug 5, 2013On 8/5/2013 3:16 AM, Ronald F. Guilmette wrote:
> In message <51FF2AD2.2080607@...>,The built-in restrictions can check envelope information for
> Stan Hoeppner <stan@...> wrote:
>> BTW, if you want to maximize potential hits on RHSBLs just short of
>> doing body checks, you may want to give Sahil Tandon's TCP server based
>> RHSBL header checker a spin. It grabs domains from headers and checks
>> them against the 3 most popular RHSBLs: DBL, SURBL, and URIBL.
> Thank you. I have just looked at that but I can't see what it does
> that makes it in any way superior to the built-in restriction verbs
> that I can (and have) already put in main.cf.
Sahil's lightweight TCP server can also check message headers such
as Message-ID: and From: header for RHSBL listed domains. Other
than this clever TCP table, they only other way to check these are
with a milter or content_filter.
This used to catch some extra spam, but hasn't been very effective
for me lately due to changing spammer tactics. YMMV.
-- Noel Jones
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