cyrus-imapd 2.1.15, sieve, lmtpd, and return-path header

[Chris Stromsoe]

Before I start digging through the source, does lmtpd add the Return-Path
header before or after calling sieve routines?  The first recipe below
works, the second does not.

# works
require ["fileinto","regex"];
if allof (header :regex "From" ".*") {
        fileinto "test1";
}

#fails
require ["fileinto","regex"];
if allof (header :regex "Return-Path" ".*") {
        fileinto "test1";
}




-Chris