Milter-greylist

Matthias Scheler wrote:
 > Oliver Fromme wrote:
 > > My idea is to have a milter that tells the secondary's
 > > sendmail which addresses are valid on the primary.
 > 
 > Sendmail supports that out of the box:
 > 
 > 1.) Add the domain to "/etc/mail/relay-domains" on the secondary MX and
 >     reload sendmail.
 > 
 > 2.) Add entries to "/etc/mail/access" on the secondary MX which look
 >     like this:
 > 
 > To:valid-address-1@...			RELAY
 > To:valid-address-2@...			RELAY
 > To:valid-address-3@...			RELAY
 > [...]
 > To:do.main					error:5.1.1:550 User unknown

Thanks, but I wrote in my first mail that I cannot do that.
Quoting myself:
 > Of course, one possibility would be to duplicate all users,
 > aliases, virtusertable etc. from the primary to the secon-
 > dary's virtusertable, so it knows all valid addresses.  But
 > I don't want to do that, because the secondary shouldn't
 > know about users on the primary (both are operated by
 > different people that don't need to know each other).
 > It would also make administration much more difficult,
 > because whenever an alias or user is added or changed,
 > I would need to arrange for the same change on the
 > secondary.  (In case of multiple backup MX servers it
 > gets even worse.)

Best regards
   Oliver

PS:  I've just read Emmanuel's email how to do it with
the CVS version of milter-greylist using the "urlcheck"
feature.  That sounds like it's worth trying.

(The only problem is that the primary MX isn't running
a web server, and it really shouldn't.  But maybe I can
hack something up for that purpose, maybe a simple app
that receives HTTP GET requests ...  I'll look into that.)

-- 
Oliver Fromme,  secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd
Any opinions expressed in this message may be personal to the author
and may not necessarily reflect the opinions of secnetix in any way.

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