Question about Exim

[Phillip Hofmeister <plhofmei@zionlth.org>]

Greetings everyone,

I set up an Exim mail filter file containing the following:

# Exim filter
if
  $h_X-Amavis-Hold contains " "
then
  freeze
endif

Is there a better condition that will test just for the existence of the
header?  I have tried def: without any luck.

If anyone knows how, that would be great, otherwise I'll still with what
I have.

PS. I am subscribed to neither of these list, please CC me in replies.

-- 
Phillip Hofmeister

PGP/GPG Key:
http://www.zionlth.org/~plhofmei/
wget -O - http://www.zionlth.org/~plhofmei/key.asc | gpg --import