[Gllug] RBL listed hosts

[Jim Bailey]

On Thu, Jun 13, 2002 at 10:44:39AM +0100, Xander D Harkness wrote:
> >
> While I know that you are using postfix, there are some good exim 
> filters floating round the net that
> compare the sending host, the sender's email address and the headers for 
> example to make sure that
> an Hotmail email is arriving from of of the service's relays.
>
This is exactly the stuff I am experimenting with now and it seems to be
working resonably well, though I am having problems with some of the
hotmail stuff, I put that down to my inexperience with smtp rather than
some flaw with the underlying principle.

Oh well back to RFC 2821 and the Postfix docs and lists. :)

> I find that I am getting very little spam coming through from Hotmail 
> addresses, I am getting a lot from
> 911.com and xo.com and a few .pl addresses.  For these addresses I am 
> also using
> sender_verify_callback which tries to send a test bounce message to the 
> senders address during the smtp
> session.  If the test fails because the mail box is full of bounces or 
> it does not exist then the mail will be
> refused.  It does create a lot of extra work for a message delivery but 
> it does work well on selected
> domains.
>
I will have a look at the Postfix stuff and see if they have an
equivalent system.  since some of the accounts and domains that I trying
to look after are being buried with spam in some cases 80% of email
traffic to them.

Peace Jim

"Take your dying with some seriousness, however.
Laughing on the way to your execution
is not generally understood by less-
advanced life-forms, and they'll
call you crazy."
--The Messiah's Handbook

-- 
Gllug mailing list  -  Gllug at linux.co.uk
http://list.ftech.net/mailman/listinfo/gllug