If you are able to connect to the URL posted by Mark, other things you could try:
- Checking the date and time of the server is correct.
yum --disablerepo=epel update ca-certificates
yum --disablerepo=epel reinstall epel-release
Editing the [epel] section of /etc/yum.repos.d/epel.repo and:
- Uncommenting the baseurl
- changing
httpstohttpon the mirrortlist line, or uncommenting the mirrorlist line by prepending a#.
Try with yum --enablerepo=epel check-update or
yum --enablerepo=epel update reporting the full command outcome.
Some more options: