Hi, I'm using ISPConfig for 2 email domains, how can add additional domains to the Let's Encrypt SSL certificate. I'm receiving warnings that the certificate is not valid for the second domain. Thanks in advance.
Cool It would be nice if you could share the solution (for those who might be searching for an answer in the future).
??? for email domains, you're trying to set domain based mx records? eg mx records point to mail.domain1.com for the 1st domain, and mail.domain2.co.uk for the 2nd domain? if so, this is not recommended, neither will match the actual mailserver hostname (unless the mailserver belongs to one of these domains) and you will, eventually, run into the limit of the number of domains you can add to a single letsencrypt certificate. you should use the same mx record target for every domain you add to the system. eg mail.mymaindomainname.com or setup SNI for postfix/dovecot properly ( you would need to configure and manage this manually ), this is not currently supported by ispconfig.