RE: [courier-users] perlfilter questions

From: Binand Sethumadhavan [mailto:binand@gmail.com]
>
> On Apr 4, 2005 1:15 PM, Bowie Bailey <Bowie_Bailey@buc.com> wrote:
> > I would like to be able to reject invalid users from my mailserver, but
> > I don't want to add hundreds of users and .courier files. I was
> > considering writing a simple perlfilter to check the usernames of any
> > incoming email to this domain. Can I reject individual recipients from
> > a filter? As I
>
> I had a ditto system sometime ago - only the servers were sendmail. What
> I did was to write a Milter on the front server that would check on the
> back server for users via a SMTP connection using VRFY, and cache the
> results for a configurable amount of time (mine was 6 hours, worked well).
>
> Maybe you could do the same with a courierfilter.

Not a bad idea. Unfortunately, the second server does not know about the
names either. It just accepts everything. What I was going to do was
create a text file with a list of names to check against and have my
courierfilter do the checks.

The question is partial rejects. If I get an email with two recipients, but
one of them is bad, what do I do?

Bowie


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