Markus, I believe that the XINHEADER and XOUTHEADER directives in the
global.cfg are what you're looking for.
They can be used to create an arbitrary header and populate it with any
exposed Declude variables, e.g.:
#XINHEADER X-Note: This E-mail was sent from %REVDNS%
([%REMOTEIP%]).
Oops, sorry, I jumped the gun and gave the wrong answer.
What I meant to say was that the %TESTSFAILED% variable could be used
with either XINTHEADER/XOUTHEADER and the client would have to parse the
whole line for, say, a traditional WEIGHT20 entry.
If there's a way to create an arbitrary entry
