I had made a new mailing list on my Mac OS X server (10.5.6), but the emails it sent out had the wrong url on them. I popped a question on the Apple Discussion board and Alex gave me the answer. Here is the cli command to fix the issue.

sudo /usr/share/mailman/bin/withlist -l -r fix_url mylistname --urlhost=mydomain.tld

Thanks Alex.

Tags: Server, email