Re: [Exim] question on duplicate headers

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Autor: Philip Hazel
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A: John Jetmore
CC: exim-users
Assumpte: Re: [Exim] question on duplicate headers
On Tue, 8 Jan 2002, John Jetmore wrote:

> I knew there were two instances of
> the header, I just couldn't find the definition in the book for
> behaviour in this situation.


In section 9.2 of the spec it says

$header_<header name>: or $h_<header name>:

[snip]

If there
is more than one header with the same name, they are all concatenated to
form the substitution string, with a newline character between each of
them. However, if the length of this string exceeds 64K, any further
headers of the same name are ignored.

and in the Exim book it says the same thing in the last paragraph in the
section called "Header Insertion" in chapter 17 "String Expansion".

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