Thanks very much for clarifying chaps. Is there any quick guide for me to get started to implement those 2 features I indicated earlier? I have procmail already installed on my box. # procmail -v procmail v3.22 2001/09/10 Copyright (c) 1990-2001, Stephen R. van den Berg <srb@xxxxxxx> Copyright (c) 1997-2001, Philip A. Guenther <guenther@xxxxxxxxxxxx> Submit questions/answers to the procmail-related mailinglist by sending to: <procmail-users@xxxxxxxxxxxx> And of course, subscription and information requests for this list to: <procmail-users-request@xxxxxxxxxxxx> Locking strategies: dotlocking, fcntl() Default rcfile: $HOME/.procmailrc It may be writable by your primary group Your system mailbox: /var/mail/root [root@nspplss2 postfix]# [root@nspplss2 postfix]# rpm -qa | grep -i procm procmail-3.22-14 warning: only V3 signatures can be verified, skipping V4 signature -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list