It looks renewal failed because the config included whimsy-test. This was redirected to whimsy-vm5 some while ago.
I don't know how to fix the config, so I just ran the command: /srv/git/letsencrypt/letsencrypt-auto --apache -d whimsy.apache.org -d whimsy4.apache.org -d whimsy-vm4.apache.org (i.e. without whimsy-test) After choosing: 1: No redirect - Make no further changes to the webserver configuration. it all seems to be working OK again. If there is an easy way to check/change the domains, it would be useful to know. S.
