Start by setting a SPF v1 record in your DNS.
Then look at inbound mail filters and possibly joining the spam-l list.
This is really the wrong list to discuss spam control and reactions.
On Wed, 5 Apr 2006, James Medley wrote:
> Hello All,
>
> Lately my mail queue has been getting a much higher number of queued
> messages, mainly from spam. Apparently someone is sending spam and
> using my server as a return address. This has in turn stopped some of
> our legitimate mail from going through and some showing a reason as
> temporarily greylisted. I am running sendmail 8.12.9/ qpopper 4.0.5
> on a Mac G4, OS 10.2.8. If someone can please point me in the right
> direction I would appreciate it.
>
> Jim
>
>
>
--
If a person, or organisation, starts to play on your fears
it may be that person or organisation that you should fear.
