Re: [Exim] Checking for a header in a system filter.

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Author: Mark Hynes
Date:  
To: J-P Human
CC: exim-users
Subject: Re: [Exim] Checking for a header in a system filter.
On Sep 05, J-P Human wrote:
> Hi
>
> Using Exim3,
> In a sytem filter I use "headers add X-whatever" to add a header.
> How do I then check for the existence of that specific header the next
> time that email is processed?
> Is their a variable or something it will be in?


Their content will be in $header_X-whatever: (check the String expansion
section of the docs). There's a condition 'def' you can use to check
for its existence (as well as other operators on its content)

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| Mark Hynes           mark.hynes@??? |
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