Salut, Stanislav, On Mon, 19 Oct 2009 12:30:09 -0700 (PDT), Stanislav Sinyagin wrote: > Martin implemented this hack in a FreeBSD kernel module. Of course > this gives more room for performance, but then it binds the solution > to a specific OS and kernel release. I personally feel there's > something wrong if the kernel has to deal with an application-level > protocol. On the other side, you usually install a dedicated server > just for incoming mail processing.
It's fairly easy to implement in Postfix:
smtpd_helo_restrictions =
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
permit_mynetworks,
check_helo_access hash:/usr/pkg/etc/postfix/checks/helo_checks,
sleep 30,
reject_unauth_pipelining,
permit
There you go.
--
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