Hans Sandsdalen <[EMAIL PROTECTED]> wrote:
> At 13:26 13.03.01 -0600, Charles Cazabon wrote:
> > >
> > > I want to block incomming mail from unknown hosts, ie
> > > those with no reverse dns entry. How do I do this?
>
> >Bad idea. All kinds of local or remote DNS failures can prevent you from
> >resolving a remote hosts's DNS entries. However...
>
> Well, most, if not all my mail from received from unknown hosts are spam.
Read what I wrote again: a failure to resolve the reverse DNS entry of the
IP address which is connecting to your SMTP server does _not_ mean that that
IP address doesn't _have_ a reverse DNS entry. Network congestion, BIND
failure, or many other factors can prevent you from resolving that entry.
If you implement this, you _will_ throw away legitimate mail.
> Perhaps it's a bad idea, but is it possible?
I said how to do this in my previous email. I just didn't give it in a
step-by-step "edit this file, placing this line in it" fashion.
> My qmail is patched with the flame patches, <http://www.flame.org/qmail/>
Never heard of any "flame" patches.
Charles
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Charles Cazabon <[EMAIL PROTECTED]>
GPL'ed software available at: http://www.qcc.sk.ca/~charlesc/software/
Any opinions expressed are just that -- my opinions.
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