Rt-mailgate and postfix

I’m having a little trouble with postfix. I use the command
"|/usr/local/rt2/bin/rt-mailgate --queue ITSUPPORT --action correspond"
in the alias file. When a message is received to that address everything
kinda comes to a halt for about 1 minute. Watching the maillog and rt. I see
the new ticket generated and show up in the queue long before anything is
noted in the postfix maillog. All transactions come to a halt until that
logging comes through. No more email in and no email out durinig this
timeframe. Also, db updates appear to hang forever on the Submit. It seems
to me that postfix isn’t happy with that command and is waiting till a
timeout period because it expects something? We’re production with this and
we’re hurting. Please help.