Boxer World List (BWL) was discontinued in August 2002 in favor of the message board format because it is a better medium for discussions with 500-1,200 messages a day and it is virus free/spam free unlike email lists where pathetic and frustrated people (especially the breeders who do not meet our health testing requirements and couldn't provide hard copy of the tests to the buyers. It is not because they have titles that it means they have healthy dogs) can register just to collect email addresses of members when they post so they can send them unsolicited emails.
You can join the Boxerworld forums at http://boxerworld.com/forums
With over 43,000 members, it is the largest boxer owners community in the world! It is even the largest dog online community in the world.