I am trying to setup block_sender plugin from Squirrelmail using procmail, The problem is that when I am trying to add a domain to the list I get: firstname.lastname@example.org is already on your block list! Please contact your system administrator if you're not reading this message from your Trash folder! Here is what I have done so far in postfix: Code: mailbox_command = /usr/bin/procmail -a "$EXTENSION" DEFAULT=$HOME/Maildir/ In procmail config file I have Code: INCLUDERC=/usr/share/squirrelmail/plugins/block_sender/sqblock.rc.maildir-flat INCLUDERC=/usr/share/squirrelmail/plugins/block_sender/sqblock.rc.mbox-flat DROPPRIVS=yes :0fw | /usr/bin/spamc :0 * ^X-Spam-Status: Yes $HOME/spam Now I have the block_sender plugin installed and activated. What is missing as I think so far is that $HOME/.procmailrc is missing or not configured as it should be and here where I need help. Any ideas?