Autor: Suresh Ramasubramanian Data: Para: Exim Assunto: Re: [Exim] Using Exim on a large volume fallback MX
Andromeda rearranged electrons thusly:
> 1. Make your users connect to your mailservers, and use specific incoming
> and outgoing servers. What I mean with this is that spam mailers usually
port 25 filtering? ELNK already does this I think
> 2. Restrict the amount of recipients that can be sent to. Spammers tend to
> send spam with huge recipient lists. Yahoo and Hotmail already restrict
quite viable
> 3. Use system message filtering to filter for specific starts or endings in
> messages (newer spam messages have a disclaimer stating that it is sent in
It might work out as Nigel posted ...
> 4. Use a POP-before-SMTP authentication scheme. Your user has to fetch mail
> first before he can send email. This works quite well at Pair Networks and
Why? As a dialup provider instead of a hosting provider, Earthlink has RADIUS
logs and such ... no trouble tracking the spammer either.