I know this isn't new, but I haven't found anything on this forum that is similar to my problem, despite trying all the suggestions.
I just updated my wildcard SSL certificate, this isn't a Let'sEncrypt cert, it is a real paid for cert. It is verified, working across all my various sites, and the config files are all correct. My mail server is working, I can send and receive emails using a stand alone client. Port 993 is working. Dovecot is running. The only thing that isn't working now is Roundcube. (It was before the update to the new ssl cert.)
When I updated the certificates, I used the same names as the old ones so I wouldn't have to go into all the config files and update them. For example ssl.crt was replaced with ssl.crt after I copied the old ssl.crt as ssl.crt.old.
As I said, it has worked for everything except roundcube.
The error is Connection to storage server failed, and when I look at the logs it says IMAP connection failed for unknown reason. If it is a permissions issue, the ssl.crt, etc. are set 644. If it is an owner issue, then please tell me who the owner should be.
The last time this happened (last year) I just reinstalled roundcube. Please don't make me do that again. This should be easier than that. Thanks.
P.S. I am running Ubuntu 20.04 with php7.4-fpm and apache2.
