WHERE IS PROCMAIL LOCATED ON THIS SYSTEM? The procmail executable is located on the mailserver. You will not be able to access it via an NFS client and it should only be called from your .forward file similarly to this: "|exec /usr/pkg/bin/procmail -f-||exit 75 #$LOGNAME" For best performance and less of a burden on shared resources it is asked that you only do mail processing in /tmp or in $MAILDIR. Do not process mail in your home directory. Calling procmail from or performing mail processing on an NFS mount can sometimes result in data loss.