Re: [Exim] Efficiency of Mail Scanning

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Author: Philip Hazel
Date:  
To: phil
CC: exim-users
Subject: Re: [Exim] Efficiency of Mail Scanning
On Thu, 17 Jan 2002, Phil White wrote:

> All incoming mail is to be scanned. This includes incoming mail for users,
> and incoming mail for submission to majordomo. Obviously it is more efficient
> for a mail to be scanned once, before distribution to several recipients. But
> which is going to be technically the most resources-efficient, system filter
> or a conditional director/router ?


Probably the latter (because filters are interpreted) but make sure you
use batch delivery so only one copy goes to the scanner.

I'm hoping that the new local_scan() function in Exim 4 can be exploited
to provide even more efficient scanning.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.