I don't remember how I came to this conclusion, but when I looked at the zombie process a while ago, I thought it could have been tied into a cron job that runs every 10 minutes and causes this in the maillog:
Code:
Mar 23 00:00:01 linhes postfix/postfix-script[29226]: error: unknown command: ''
Mar 23 00:00:01 linhes postfix/postfix-script[29227]: fatal: usage: postfix start (or stop, reload, abort, flush, check, status, set-permissions, upgrade-configuration)
Mar 23 00:10:01 linhes postfix/postfix-script[30199]: error: unknown command: ''
Mar 23 00:10:01 linhes postfix/postfix-script[30200]: fatal: usage: postfix start (or stop, reload, abort, flush, check, status, set-permissions, upgrade-configuration)
Mar 23 00:20:02 linhes postfix/postfix-script[31185]: error: unknown command: ''
Mar 23 00:20:02 linhes postfix/postfix-script[31186]: fatal: usage: postfix start (or stop, reload, abort, flush, check, status, set-permissions, upgrade-configuration)
Oh right, it seemed like it could be tied to this post:
http://forum.linhes.org/viewtopic.php?f=21&t=24131Again, something that has been around since long before 8.5.1