I'm not sure if there's a better place to report this, but mutt.org is having a web cert issue:
$ echo | openssl s_client -servername mutt.org -connect mutt.org:443 2>/dev/null | openssl x509 -noout -subject subject=C=US, ST=Oregon, O=Oregon State University, CN=*. cass.oregonstate.edu $ echo | openssl s_client -servername www.mutt.org -connect www.mutt.org:443 2>/dev/null | openssl x509 -noout -subject subject=C=US, ST=Oregon, O=Oregon State University, CN=*. cass.oregonstate.edu
