Global Postfix Content Filter does not appear to be working.

I am trying to block any content From a sender ending in @bounce.twitter.com. It does not seem to be working.

 

I'd use:

Code:

/(.*).bounce\.twitter\.com/

 

It's not helping keep these out.

Code:

-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
3D5C4329C     45583 Mon Jan 23 17:51:16  n01897576d[email protected]bounce.twitter.com
(host alt1.gmail-smtp-in.l.google.com[173.194.219.26] said: 421-4.7.0 [<server ip>      15] Our system has detected an unusual rate of 421-4.7.0 unsolicited mail originating from your IP address. To protect our 421-4.7.0 users from spam, mail sent from your IP address has been temporarily 421-4.7.0 rate limited. Please visit 421-4.7.0  https://support.google.com/mail/?p=UnsolicitedRateLimitError to 421 4.7.0 review our Bulk Email Senders Guidelines. r3si4567981ywb.73 - gsmtp (in reply to end of DATA command))
                                         [email protected]

 

that's not a twitter bounce