Certbot

https://unix.stackexchange.com/questions/301266/certbot-add-www-domain-to-existing-domain-certificate

DNS

certbot certonly --manual --preferred-challenges dns -d "paulelam.com"

Web

Renew

This is a draft article and so will not be published on A Voice for Men or appear in random article selections. Wiki4Men is looking for trustworthy editors that can turn draft articles in to featured articles. Information on how to apply is on the Main Page. Articles in this category are applicable to Linux. Much of the information is also applicable to other Unix flavours.