Dmitry Samersoff <dms@???> (Sa 27 Jun 2009 19:00:13 CEST):
...
>
> Much more often problem is clusters: lots of SMTP clusters can resend
> e-mail from another IP address. Fortunately most of them is not
> spammers. I think a) the problem should be mentioned in this chapter b)
> it's better to whitelist such clusters rather then exclude sender IP
> from hash calculation.
I'm greylisting on '$sender_address|$local_part@$domain'. It works with
cluster based senders (web.de, I think).
It's perl based as exim "plugin", but limited to a single host.
http://www.schlittermann.de/doc/grey.shtml
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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