Re: OT: How much traffic does your ISP filter by TCP port no.?

In article <76b81269-0d5f-4efa-ae62-b178af846824
@g30g2000hsb.googlegroups.com>, dp@xxxxxxxxxxx says...
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...).

The ISP I was using (temporary wireless connection while living in an
apartment doing contract work) had no SMTP servers, so I used my own.
They didn't block port 25 access but few ISPs would listen to my
email, so gave it up and lived without reliable outgoing email for
three months.

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.

I bet there are all sorts of ports that are blocked. "Unlimited"
doesn't mean "unrestricted". They likely don't want you having an
Internet facing web server either.

And since no spam comes out of here, I do not like what they did.

They don't know what you're doing. I'm sure you'd scream if they
were filtering your email too.

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).

If you don't like the ISP, get another or live with it and bitch like
everyone else.
Thanks,

Dimiter

P.S. Hint: if you don't know whether your ISP blocks your outgoing
SMTP connections, try to connect to my domains mailserver,
telnet://mail.tgi-sci.com:25 . If you see a response (one line),
you are not blocked. Type in a "quit" command to close the session
gracefully.

No need to know. I have no need for my own mail server. Got the T-
shirt and it didn't fit.

--
Keith
.

Relevant Pages

  • Re: OT: How much traffic does your ISP filter by TCP port no.?
    ... A few days ago my ISP blocked my outgoing TCP connections to ... port 25 - except to their mailserver. ... I sometimes use my domains mailserver or my ISP's, but at times, ...
    (sci.electronics.design)
  • Re: OT: How much traffic does your ISP filter by TCP port no.?
    ... A few days ago my ISP blocked my outgoing TCP connections to ... port 25 - except to their mailserver. ... I sometimes use my domains mailserver or my ISP's, but at times, ...
    (sci.electronics.design)
  • Re: OT: How much traffic does your ISP filter by TCP port no.?
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