[Workaround.org] rejection at connect

Christian Schmidt chris at 2309.net
Wed Mar 4 19:48:35 CET 2009


Hi everyone,

i wonder if postfix can be configured to reject emails if the sending 
MTA IP address or DNS
for instance
- did send more than x emails in the last hour (where x is a 
configurable threshold)
- did send more than x emails that were found to be spam by amavis-new 
(where x is a configurable threshold)
- is in a list of blacklisted IPs

have not researched this yet and thought i'll give this forum a shout.
above features would definitely make this setup more 'ISP-style' :)
e.g. when my mail server sends more than 100 emails very quickly to 
gmail accounts my IP address gets a temporary block for about 10 to 15 min.


any ideas anyone?

regards,
Christian


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