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I am getting myself confused, and need someone who fully understands this process to help me out a bot. I would like to obtain an ssl certificate, so I can run my own imap server on a machine in my office. My domain is hosted by networksolutions, but I don't run my imap server there. I am assuming I'll need to pay a CA to generate what I need, but I'm confused about what I

...n't connect. > Nope, you don't have to pay for a certificate at one of the > traditional CAs, you can use Let's Encrypt to have free but fully > valid certificates for your server. > See https://letsencrypt.org/ for more information. I can recommend > https://github.com/xenolf/lego for use on your server, but there are > many different LE clients out there. certbot works only with ports 80 or 443? Can lego work with with IMAP ports like 143 or 993? The documentation is not very clear. best regards --- Michael Schumacher

...equently regenerate my dovecot.pem file?? Nope, you don't have to pay for a certificate at one of the traditional CAs, you can use Let's Encrypt to have free but fully valid certificates for your server. See https://letsencrypt.org/ for more information. I can recommend https://github.com/xenolf/lego for use on your server, but there are many different LE clients out there. If your phone does not already trust Let's Encrypt's CAs, you should be able to install their certificates to get it working. I suggest you start by getting a cert onto your server and take it from there though...

...; Nope, you don't have to pay for a certificate at one of the >> traditional CAs, you can use Let's Encrypt to have free but fully >> valid certificates for your server. > >> See https://letsencrypt.org/ for more information. I can recommend >> https://github.com/xenolf/lego for use on your server, but there are >> many different LE clients out there. > > certbot works only with ports 80 or 443? Can lego work with with IMAP > ports like 143 or 993? The documentation is not very clear. I haven't used certbot, only lego, but that's not a pro...