Re: OT: How much traffic does your ISP filter by TCP port no.?
- From: krw <krw@xxxxxxxxxx>
- Date: Fri, 30 Nov 2007 19:08:29 -0500
In article <GDS3j.25107$JD.3785@xxxxxxxxxxxxxxxxxxxxxxxxxx>,
joseph_barrett@xxxxxxxxxxxxx says...
Paul Hovnanian P.E. paulh@xxxxxxxxxx posted to sci.electronics.design:
Didi wrote:
A few days ago my ISP blocked my outgoing TCP connections to
port 25 - except to their mailserver. After a few calls they agreed
to let me also access my domains mailserver (turned out they just
allowed it globally to all their customers...).
I sometimes use my domains mailserver or my ISP's, but at times,
e.g. when I want to have the delivery session to the final
recipient mailserver
logged, I let my SMTP client go all the way directly.
They claim they did it to fight spam - which is plausible, but
breaks
their claim to deliver "unlimited access" in pieces.
And since no spam comes out of here, I do not like what they did.
Not something I would go to war for, but I will not ignore this
lightly
either.
Any observations from other parts of the world? (I am located in
Sofia, Bulgaria).
You have to look at this from your ISP's point of view. Spammers
install trojans on unprotected systems and these send out huge
volumes of junk using port 25. Since most people haven't got a clue
about how this stuff works or how to block it, the ISPs take
responsibility to protect their systems.
If you can convince them that you know what you are doing and can
configure and protect your system correctly and, they enable
outbound port 25 traffic, great. Having an ISP enable such traffic
for selected domains/IP addresses is extra work which you shouldn't
expect them to do
for everybody. Or your rates would have to go up.
Nice statement of the typical business case in the US. I would
actually pay more for proper port 25 (SMTP) and fuller usenet access.
Usenet access is pretty cheap. I generally use Individual.net
($10EUR/year) for text access and Thundernews ($8/mo) sometimes for
binaries. No use for port25 access. It was useless when I had
access.
I have been considering piggybacking any of several fuller usenet
providers for a long time.
THere are many to choose from.
--
Keith
.
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