On Tue, Aug 26, 2003 at 08:56:44PM -0400, Wakko Warner wrote:
> I use this:
> drop message = HELO doesn't look like a hostname
> log_message = Not a hostname
> condition = ${if match{$sender_helo_name} \
> {\N^[^.].*\.[^.]+$\N} \
> {no}{yes} \
> }
>
> This means: Drop the HELO unless it contains a . somewhere in the HELO
> string, but may not begin or end with a . (imposed minimum length is 3
> chars). basically x.x is ok, but .x. is not
Note that:
- at least some Windows machines seem not to send a fqdn in their
HELO string (despite being told both their host and domain names.)
- "IP literal" will not have '.'s in if you're accepting IPv6
connections - you need to check for either '.'s or ':'s.
So you actually want something like:
condition = ${if match{$sender_helo_name} \
{\N^[^.:].*[.:][^.:]+$\N} \
{no}{yes} \
}
--
Russell King (rmk@???) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
