Writing a extra line to the mail header

[Jørgen Giversen]

Dear all
I am trying to write an extra line into evry mail header.
In Mailscanner.conf you can specify a vaiable like
Mail Header = X-MailScanner:
and the same for spam header and spam score
How can i automaticaly write an extra line just under the line
X-MailScanner:
in all mail headers, with the content X-mailcheck ?

setup:
OS=RH7.3
MTA=Exim 3.36
Virusscanner=Mailscanner 4.11.1 & Sophos
-- 
Best Regards
Jørgen Giversen


-- 
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af MailScanneren på giversen.net.