[plug] Is this a spam attack?

[Luke Dudney]

On 13/05/03 17:18, Jon Miller wrote:

>Anyone have any suggestions on a spam filter program (other than SA)?
>
>
>Jon L. Miller, MCNE, CNS
>Director/Sr Systems Consultant
>MMT Networks Pty Ltd
>http://www.mmtnetworks.com.au
>
>"I don't know the key to success, but the key to failure
> is trying to please everybody." -Bill Cosby
>
>  
>
Postfix does the job quite well on it's own, when configured for:
 - sender address verification (probe the sender domain's MX for the 
existence of the sender address)
 - reject_rbl_client with your choice of RBLs such as bl.spamcop.net and 
proxies.relays.monkeys.com
 - reject_unknown_sender_domain
 - reject_non_fqdn_hostname

I've also got it only accepting hotmail.com and yahoo.com (very 
frequently forged) messages from hotmail and yahoo servers, but that's a 
little more in-depth.

Cheers
Luke