,------[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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