I am running 2 debian machines, one as a mail server and one as a web server.
Certs work fine for my web server, because its has port 80 and 443 forwarded to it. The problem is when I make certificates for my mail server.
I use SSL encryption for my mail server, but I cant make a certificate with certbot because it needs to check it by using a web server.
I was wondering how I could fix this. If you need any information let me know.
Domain: hedium.nl / mail.hedium.nl
Certbot Version: 0.10.2
Mail server is postfix with dovecot.