bruceg/qmail-qfilter — pull request #1 by schmonz (2014-11-17 02:23:56+00:00)
Title: Set QMAILPPID for filters to know grandparent PID.

With this change, my homegrown badrcptto-alike filter can log
rejections in the same format as Paul Jarc's realrcptto, thereby
allowing me to correlate each rejection with a qmail-smtpd session.