C
Carroll Robbins
Flightless Bird
"DGDevin" <DGDevin@invalid.invalid> wrote on Fri, 6 Aug 2010 20:57:21 -0700
in <98OdndKdgqUmRMHRnZ2dnUVZ_uidnZ2d@earthlink.com>
>Huh, well my aging memory recalls anti-spam forums in years past echoing
>with cries that if only certain ISPs would block Port 25 blah blah blah the
>spam load would be greatly diminished for reasons I won't pretend to have
>the technical knowledge to understand (I had the impression it allowed
>people to do an end run around their ISP's mail servers, or something). And
>when I set up OE in XP Mode last week my ISP told me to use a different
>port. Not a big deal, if it works then I'm happy.
They meant block port 25 except for the ISP's own SMTP server. They thought
that was obvious. Blocking port 25 doesn't stop users from avoiding their
ISP's SMTP servers. Some ISP's don't block the port but redirect all port
25 traffic to their own servers. It does stop users from inadvertently
spewing spam. For most users it doesn't matter. For some it does.
--
Carroll B. Robbins, Jr.
in <98OdndKdgqUmRMHRnZ2dnUVZ_uidnZ2d@earthlink.com>
>Huh, well my aging memory recalls anti-spam forums in years past echoing
>with cries that if only certain ISPs would block Port 25 blah blah blah the
>spam load would be greatly diminished for reasons I won't pretend to have
>the technical knowledge to understand (I had the impression it allowed
>people to do an end run around their ISP's mail servers, or something). And
>when I set up OE in XP Mode last week my ISP told me to use a different
>port. Not a big deal, if it works then I'm happy.
They meant block port 25 except for the ISP's own SMTP server. They thought
that was obvious. Blocking port 25 doesn't stop users from avoiding their
ISP's SMTP servers. Some ISP's don't block the port but redirect all port
25 traffic to their own servers. It does stop users from inadvertently
spewing spam. For most users it doesn't matter. For some it does.
--
Carroll B. Robbins, Jr.