ISPs blocking SMTP connections from dynamic IP address space
Doug Poland
doug at polands.org
Wed Aug 6 11:48:05 PDT 2003
On Wed, Aug 06, 2003 at 11:41:56AM -0700, Nicole wrote:
>
> Yes I too have resorted to blocking Ip's with no reverse DNS and
> its amazing how many big companies can fall into this.
>
> As to the Dynamic Space, I also block DSL/dynamicly assigned Ip's
> as I fall aware of them. (See Example below) Since some Isp's are
> smart enough to identify their dynamicly allocated space it makes
> it easy. So far it is extreemly rare for someone to be sending
> mail directly from these DSL/dynamic spaces that anyone wanted to
> recieve.
>
except those of us running FreeBSD SMTP servers from broadband
connections with valid reverse DNS
--
Regards,
Doug
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