,------[Jerome Blion,  Mon, 11 Aug 2008 11:58:09 +0200]
|On Mon, 11 Aug 2008 12:26:23 +0400, -=Devil_InSide=- <[EMAIL PROTECTED]>
|wrote:
|> i look in a /etc/courier/smtpacess/*  and see, that i can filter incoming
|> connection by ip adress or by a part of it.
|> i want to now:
|> 1. how making regular expressions?
|> 81.81.81 means that i ment in my record net 81.81.81.0/24
|> how make expression like 81.*.81.81 or something such as it?
|> 
|> 2. can i filter smtp connection by hostname or dns name or by a  part of
|> it ?
|> my tries insert record like
|> yandex
|> *.yandex.*
|> *yandex.ru
|> not bring me a success.
|> in a exim docementaion i read, that records may be as shown above and
|> *-adsl-* === many such hosts sent spam, and i want to deny them to
|connect
|> or send mail.
|> in documentation on courier-mta.org i didn't find distinct answers for
|> this quiestions.
|
|Hello, 
|
|I understand your needs. I don't think it's a good idea to blacklist all
|these networks: "Many" does not mean "All"
|
|Most of spammers are already registered in URIBL like zen.spamhaus.org.
|You can try to use such a blacklist. Add a content filter and it should
|solve your problems.
|
|If you really want to discard these connexions, You could do it using 2
|ways: 
| - block them at the lowest level: Firewall them !
| - Use a courier filter to discard mails (pythonfilter is just perfect for
|that)
|
|HTH.
|Jerome Blion.
|
|-------------------------------------------------------------------------
`-----------------
thanks, but pythonfilter's greylisting (very useful utility) give me good 
effect, but any spam mails go through the strange hosts or hosts, that i  never 
see in other time in a messages of my firm. 
i don't know, can iptables filter any connection by a part of hostname, but try 
to read documentation.

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