Help with lockfile (:0:)

Below is a snippit from my .procmailrc file, and I'm wondering if I have 
the lockfile in the correct place.
The script in the 2nd part uses the contents of 'mark-relay' in it's 
processing (grep/awk/sed/mailx), so I don't want 'mark-relay' to be 
appended to until the script finishes...
Do I have the lockfile in the correct place? I think I do...

:0:
* !^FROM_DAEMON
* !^FROM_MAILER
* ^X-RR-Relay:
{
:0c
mark-relay
:0
| /usr/local/bin/bash /export/home/twabuse/relayscan.sh
}

TIA
Mark

   W. Mark Herrick, Jr. <markh(_at_)va(_dot_)rr(_dot_)com>          _.._        
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