On Thu, 25 May 2000, Jeffrey Goldberg wrote:
> In a system filter where I am trying to test for messages for a whether it
> originated in my domain 138.250.0.0/16, I have
>
> if (("${if def:sender_host_address {yes}{no}}" is yes) and
> ${mask:$sender_host_address/16} is "138.250.0.0/16") then
>
> Would there be a performance gain for
>
> if ($sender_host_address begins 138.250.) then
That should be faster. Whether significantly, I don't know.
> Also what happens if $sender_host_address is not defined.
It's always defined. It's just empty for local messages. So it would
never match.
> Finally, how do I test a system filter for things with
> $sender_host_address ? I tried playing with a combination of -bF and -bh
> but -bh always got me talking SMTP.
-oMa
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
