Michael Scheidell wrote:
From: Kenneth Porter <[EMAIL PROTECTED]>
Date: Mon, 11 Aug 2008 22:34:05 -0700
To: SpamAssassin Users List <users@spamassassin.apache.org>
Subject: Testing for existence of header
<http://wiki.apache.org/spamassassin/WritingRules>
Shows how to test for text associated with a header. How do I test if the
header is present at all? (Or not present?)
Look for examples in *.cf files.
header DOESTHISEXIST exists:X-Spam-sign
Yep, that's the way to go. Just beware that Exists currently won't match
a truly empty header.
Currently, it's actually implemented as:
header DOESTHISEXIST X-Spam-sign ~= /./
Which requires at least one character to be present in the text part of
the header. 99.9999% of the time, that does what you need, and is
lightweight to implement.
