[Mailman-Users] Warning Starting mailman

[Oscar Mauricio Cruz Lazo]

Hi alll

Im new here

Nowadays im migrating a couple of mailing list from one server to another
server both running open suse ,,  i followed each steps from mailman site
but i dont know exactly where im wrong because everytime try to start
mailman i get the following warning

Starting mailman (Warning: the Apache2 web interface for Mailman has not
been activated!

are there anybody to help me clear about it ?