Re: qmail and "rcpt to:" username validity test

What I would find really useful is if there was a way to have a list of "non
existing emails". Any RCPT TO: that would match in the file would be replied
as "No such username" and denied.
We've been getting lots of spider-spam, that is, the emails are existing,
and not random characters. This would help greatly in this case.




"Dave Sill" <MaxFreedom@sws5.ctd.ornl.gov> wrote in message
news:wx0vfv0bkjo.fsf@sws5.ornl.gov...
> "Paul Thomas" <paul@nospamplease.twocom.net> writes:
>
> > I've always wondered howto do this. Like sendmail I would have thought
it
> > would check for the username on the machine and if it isn't found reject
the
> > mail without actually letting it into its queue. Surely this must be
> > possible?
>
> The problem is that qmail is modular, and the module that handles
> incoming SMTP (qmail-smtpd) doesn't have the necessary permissions to
> determine which addresses are valid. Also, the use of .qmail-default
> files--particularly ~alias/.qmail-default--makes it very hard to say
> what's valid and what isn't. E.g., if ~alias/.qmail-default contains a
> program delivery that looks up the recipient in a mysql database, the
> only way the SMTP daemon could determine validity would be to perform
> the same lookup.
>
> --
> Dave Sill Oak Ridge National Lab, Workstation Support
> Author, The qmail Handbook <http://web.infoave.net/~dsill>
> <http://lifewithqmail.org/>: Almost everything you always wanted to know.

"NS" <go.away@nobody.here.com> writes:

> What I would find really useful is if there was a way to have a list of "non
> existing emails". Any RCPT TO: that would match in the file would be replied
> as "No such username" and denied.

Sorta like this?

http://patch.be/qmail/

--
Dave Sill Oak Ridge National Lab, Workstation Support
Author, The qmail Handbook <http://web.infoave.net/~dsill>
<http://lifewithqmail.org/>: Almost everything you always wanted to know.

yeah, sorta exactly like that!
this should be a part of the distribution! :)

thanks

"Dave Sill" <MaxFreedom@sws5.ctd.ornl.gov> wrote in message
news:wx0znk7tw0v.fsf@sws5.ornl.gov...
> "NS" <go.away@nobody.here.com> writes:
>
> > What I would find really useful is if there was a way to have a list of
"non
> > existing emails". Any RCPT TO: that would match in the file would be
replied
> > as "No such username" and denied.
>
> Sorta like this?
>
> http://patch.be/qmail/
>
> --
> Dave Sill Oak Ridge National Lab, Workstation Support
> Author, The qmail Handbook <http://web.infoave.net/~dsill>
> <http://lifewithqmail.org/>: Almost everything you always wanted to know.