Re: [exim] expansion of $header_foo:

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Author: Philip Hazel
Date:  
To: Jeremy Harris
CC: exim-users @ exim. org
Subject: Re: [exim] expansion of $header_foo:
On Fri, 20 May 2005, Jeremy Harris wrote:

> Question: in a router, when a foo: header was added in an ACL,
> is the ordering of $h_foo: specified with respect to foo: headers
> present in the SMTP data?


This is discussed in section 39.19 of the manual.

> I'm using these for passing data from ACLs to routers, and worrying
> about external attack. If I add my own with :at_start: will they
> always precede any attackers' ones in the expansion?


Ah, so you've already read the section; "right at the start" means what
it says.

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book