[maildropl] filtering based on a specific received header [SOLVED]

[Pollywog <li...@sh...>]

I was having difficulty getting Maildrop to examine the second "Received:" 
header, or even ALL the "Received:" headers (that would be fine too) for mail 
that is sent to me by my secondary MX.  I could not find an easy solution to 
this, one that did not involve invoking an external script of some sort 
(PERL, PHP, etc) and I later thought I could get around this problem by 
having Postfix remove the first "Received:" header for mail received from my 
secondary MX.  I am using header_checks in Postfix for this and my maildrop 
filter looks like this:

FILTERS=$HOME/.filters
if ( /^Received:.*by.*\.mysecondarymxhost\.example\.com!.*/ && 
lookup( $MATCH2, "$FILTERS/dat.badrc
vd" ))
       {
          to "$HOME/Maildir/.Spam/"
}

(line wrapping has sort of messed that up)

and this seems to work.   Too bad I could not find a simpler way to do it, but 
this seems to work.  After Postfix removes the first "Received:" header, the 
second header becomes the topmost header and that is the "Received:" header 
that is examined by Maildrop.


8)