Bug 550 'Account Closed, Please Remove' processed as Soft Bounce

There is a bug in this version
A

Alpha1

Guest
Clearly this should be a hard bounce:
Code:

Code:
Action: failed
Final-Recipient: rfc822; xxx@comcast.net
Diagnostic-Code: smtp; 550 5.2.0 <xxx@comcast.net> - Account Closed, Please Remove
Status: 5.2.0

Continue reading...