[Mailman-Users] How do I resolve this?

[Dr. Jones]

I get this message after having sent an email to the address below: 

The address to which the message has not yet been delivered is:

  pipe to |/var/lib/mailman/mail/mailman post 2ls
    generated by 2ls at fyrenice.com
    Delay reason: pipe_transport unset in system_aliases router

What do I need to change to resolve this? 



-- 
Dr. Scott S. Jones
Hands-On Chiropractic 
IRC: irc.freenode.net #utah
Yahoo: sanchiro12