On Wed, 11 Mar 1998, Andrew V. Kovalev wrote:
> Date: Wed, 11 Mar 1998 19:45:50 +0300 (MSK)
> From: "Andrew V. Kovalev" <avk@???>
> To: djc@???
> Cc: david@???, jhenders@???, ph10@???,
> exim-users@???
> Subject: Re: [EXIM] Regular expressions for filtering.
>
> Dave C. wrote:
> >
> > > > Legitimate dialsprint.net users will be using their assigned
> > > > SMTP/outgoing mail relay, and will NOT be making SMTP connections
> > > > directly to mailservers for destination domains.
> > > >
> > > > Only spammers will be making SMTP connections directly from dynamic
> > > > terminal server addresses.
>
> Spammers usually do not make SMTP connections to mailservers for
> destination domains, they prefer to use some well-connected relay.
With more and more mailservers permitting relay only from their own
dialups, direct SMTP connections are starting to be the trend.
>
> > > Wrong again.
> > >
> > > Customers (even dialsprint.net users:) do have a right to have a
> > > linux/freebsd/whatever system running sendmail, doing mx lookups AND
> > > delivering mail directly from terminal server addresses.
> > >
> >
> > A. They certainly have the right to do so, but no inherent right to
> > make such connections directly to my network.
>
> Hmm.. I am to lazy now to grep RFCs 8xx but it seems to me that any host on
> internet that wants to send mail has a right to connect to appropriate MX
> host..
_RIGHT_ ? No host, user, or organiaztion has any inherent RIGHT to use
any resource they don't own. To apply this strictly, this would give
even the spammers the RIGHT to send you mail.
I control the resources I own, and I decide who can connect to them and
how. That is MY right.
> > B. It is FAR more efficient to use the designated sprint SMTP relay,
> > EVEN if you are running a *nix OS.
>
> That is their problem - if some user just wants to pay to dialsprint for
> more connect time - why not?
That is of course their problem. Just like it is their problem if
destination mailhosts dont accept SMTP connections from terminal server
dynamic addresses.
> > C. Some spammers specifically do this to send their spam (or for other
> > people)
>
> Disable relaying on your host to be sure no one is spammed via it. I've
> never seen a spammer who sits on a dialup AND sends his spam using MXes.
> Just because of D. I occasionaly do receive legitimate mail delivered
> directly from dialup account (sometimes they are ISDN BTW).
Yawn. Ancient history. I'm talking about blocking spam directed at me
and my customers now.
> > D. Anyone running a *nix that is handling ANY signifigant amount of
> > mail will probably have a real connection, at the very least a static
> > dialup if not something more permanent.
>
> Probably. Probably not. Probably someone uses dial backup or ISDN.
>
> > If they are intelligent enough to use the relay but are unethical
> > spammers, eventually spring will shut them down.
> > If they are not spammers, then they will figure out when their mail is
> > rejected that they need to use their designated relay.
> > > --
> > > I always find it quite amusing that the people who think that they need HTML
> > > to express themselves always seem to be very poor at doing so in plain text.
> > > --Boris 'pi' Piwinger <3.14@???>, a.h.b-o-u
> > >
> >
> >
>
>
> --
> I always find it quite amusing that the people who think that they need HTML
> to express themselves always seem to be very poor at doing so in plain text.
> --Boris 'pi' Piwinger <3.14@???>, a.h.b-o-u
>
--
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