Yes, you can configure majordomo to do archiving.
It uses a tool called Mhonarc, which you can find at:
Bob Bish <email@example.com> writes:
% Is there software that does this:
% and/or how can a web archive be created for majordomo lists?
John Sechrest . Helping people use
CTO PEAK - . computers and the Internet
Public Electronic . more effectively
Access to Knowledge,Inc .
1600 SW Western, Suite 180 . Internet: firstname.lastname@example.org
Corvallis Oregon 97333 . (541) 754-7325