There are 2 main reasons:
1 - Not having their users using open relays outside and getting
them into trouble
2 - By forning all SMTP trafic to move through their own servers,
they can have some numbers on mail trafic to show in director board
meetings.
RC
On Wed, Aug 23, 2000 at 05:51:07PM -0700, Ihnen, David wrote:
> Do you have any idea what the reasoning/legality for that is?
>
> If my personal mail.com mail transmittals stopped working, I would be pretty
> upset at being denied access to a legitimate service! They shouldn't be
> able to restrict me to having their mail server process all my e-mail!
>
> David
>
> > -----Original Message-----
> > From: Ricardo Cerqueira [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, August 23, 2000 5:52 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Unable to connect to SMTP
> >
> >
> > Can that person connect to any other SMTP servers from AT&T?
> > Many ISPs block all outgoing SMTP connections except those
> > coming from
> > their own servers.
> >
> > RC
> >
> > On Wed, Aug 23, 2000 at 06:21:15PM -0600, Stephen Bosch wrote:
> > >
> > > I have just added a new user who uses an AT&T dialup account that is
> > > typically assigned an address in the 12.72. range. I have
> > added this range
> > > to my tcprules file.
> > >
> > > Below is the exact content of tcprules:
> > >
> > > 209.115.249.:allow,RELAYCLIENT=""
> > > 12.72.:allow,RELAYCLIENT=""
> > > 192.168.:allow,RELAYCLIENT=""
> > > 127.0.0.1:allow,RELAYCLIENT=""
> > > :allow
> > >
> > > For some reason, however, this person can't connect - not
> > even with telnet
> > > to port 25 (it tells her that her connection failed). She can telnet
> > > normally, however.
> > >
> > > What else should I be looking for? /etc/hosts.deny and
> > /etc/hosts.allow do
> > > not contain any addresses, either.
> > >
> > > Thanks,
> > >
> > > Stephen
> > >
> > >
> >
> > --
> > +-------------------
> > | Ricardo Cerqueira
> > | PGP Key fingerprint - B7 05 13 CE 48 0A BF 1E 87 21 83
> > DB 28 DE 03 42
> > | Novis - Engenharia ISP / Rede T�cnica
> > | P�. Duque Saldanha, 1, 7� E / 1050-094 Lisboa / Portugal
> > | Tel: +351 21 3166700 (24h/dia) - Fax: +351 21 3166701
> >
--
+-------------------
| Ricardo Cerqueira
| PGP Key fingerprint - B7 05 13 CE 48 0A BF 1E 87 21 83 DB 28 DE 03 42
| Novis - Engenharia ISP / Rede T�cnica
| P�. Duque Saldanha, 1, 7� E / 1050-094 Lisboa / Portugal
| Tel: +351 21 3166700 (24h/dia) - Fax: +351 21 3166701
PGP signature
