[Pkg-exim4-users] Blocking SPAM

[Jose de Jesus Gutierrez Ramirez]

Hi,

When I started up my email server I configured with Sa-exim to stop SPAM.
But I still receiving a lot of SPAM so I decided to include DNS lists to
improve the SPAM rejection.

These are the lines I included.

  deny
  hosts    = !+rbl_white_hosts
       message  = Host is listed in $dnslist_domain
       !authenticated = *
       dnslists = \
       relays.ordb.org : \
       dnsbl.sorbs.net

But the dnsbl.sorbs.net began to stop valid messages from servers like
hotmail, yahoo and others behind DSL connections.

In this moment I'm thinking to solve it taking away the dnsbl.sorbs.net and
adding to a warn list.

  # DNS based blacklists
  deny
  hosts    = !+rbl_white_hosts
       message  = Host is listed in $dnslist_domain
       !authenticated = *
       dnslists = \
       relays.ordb.org

  warn
  hosts    = !+rbl_white_hosts
        message = X-Warning: $sender_host_address listed by $dnslist_domain
        log_message = Listed by $dnslist_domain
        dnslists = dnsbl.sorbs.net

I'd like to receive your comments about it. Do you think it's a good idea?
Can I Improving with somthing else?
It's a better way to keep the SPAM away?
Or could be better to left the SA-exim alone?

TIA

Regards

Jesus Gutierrez