Unable to determine owner html syntax errors

On pageLinkProblemDetected
http://lists.bcn.mythic-beasts.com/mailman/options/genuki-maintainers/index.html3 html syntax errors
line (2:1) Warning: missing <!DOCTYPE> declaration
 line (76:5) Warning: missing </address> before <table>
 line (84:1) Warning: discarding unexpected </address>
11 Oct 2014

1 problems found.