gabriel rosenkoetter on 24 Sep 2008 12:05:34 -0700

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Re: [PLUG] Comcast Biz. (was email being rejected...)

At 2008-09-24 12:47 -0400, JP Vossen <> wrote:
> One reason I've avoided this solution is that I was told that the 
> assigned IPAs where in the same ranges as the dynamic Comcast 
> residential ranges, and thus get blocked by all kinds of blacklists. 
> Not true?  Or now changed?

Most of the modern spam blacklists I've seen (advised on, helped
write, etc) use regexps on PTR records rather than trying to track
down all the IP ranges that might apply. This is a good approach
because it's a much simpler set of rules to write *and* it avoids
burning responsible home users (provided they're with an ISP that
will modify PTR records for them).

(I've been lazy about doing so--and just relay outgoing mail through
a VPS for some domains that are picky--but I've been meaning to make
the same request of Verizon Business DSL, it's just much more of a
hassle with them than it ever was with Speakeasy.)

gabriel rosenkoetter

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