[Mimedefang] greylisting does it still work?

[ADNET Ghislain]

if greylisting use a policy based on a server able to resend email, 
could it be done in the helo phase as the source ip of the sending 
server should be enough to greylist it.

Does going further using other data than that is usefull ? (perhaps to 
stop zombies behind a NAT router where a legitimate mail server runs ? 
). Have you ever seen if moving the greylist to the hello phase change 
how filtering is efficient ?


-- 
Cordialement,
Ghislain
 

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