Where do i set the signature stripping line?

I thought in the old version you were able to specify what to strip after for instance the signature "--" It seems like its not working at all now.

For example this an email that have signature remover on and also message cleaner.

Reply ABOVE THIS LINE to add a comment to this post.
Testing The Messages
From: Chris Ellis <chris@example.com>Reply-To: <comments@listserv.example.com>Date: Tue, 21 Feb 2012 12:13:02 -0600To: Chris Ellis <chris@example2.net>Subject: Re: [The Colorado Creditor Bar Association] This is a test of the CCBA listserv

Testing replies
Thanks,
Chris Ellis
Chief Creative Officer
Ideas by Nature
(e) chris@example.com
(w) www.ideasbynature.com
Please consider the environment before printing this email.
This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which
they are addressed. If they have been received in error, please notify the sender and delete the contents of the email. Recipients should check emails and any attachments for the presence of viruses. The company accepts no liability for any damage caused by
any virus transmitted by this email.
From: Official CCBA Listserv <no-reply@example.com>
Reply-To: <comments@listserv.example.com>
Date: Tue, 21 Feb 2012 12:07:02 -0600
To: Chris Ellis <chris@example.com>
Subject: [The Colorado Creditor Bar Association] This is a test of the CCBA listserv
Read more http://example.com/listserv/test-ccba-listserv#comment-75

--
This is an automatic message from The Colorado Creditor Bar Association
To manage your subscriptions, browse to http://example.com/user/108/notifications
You can unsubscribe at http://example.com/notifications/unsubscribe/subscription/83?timestamp=1...
View original post: http://example.com/mailcomment/redirect/%3C108.277.75.1329847981.5dd3cd7...
Read more http://example.com/listserv/test-ccba-listserv#comment-81
--

This is an automatic message from The Colorado Creditor Bar Association
To manage your subscriptions, browse to http://example.com/user/108/notifications
You can unsubscribe at http://example.com/notifications/unsubscribe/subscription/83?timestamp=1...
View original post: http://example.com/mailcomment/redirect/%3C108.277.81.1329851041.33629f3...