Ok something changed with iOS and MacOS so now with Bluehost mail we are getting all these SSL errors. See https://my.bluehost.com/hosting/email_manager/config for your personal configuration.
In looking at the instructions, it looks like with non-SSL. Which you never want to use, you use `mail.domain.com` for your domain, this then maps to your actually shared host which is of the form `boxNNN.bluehost.com` where NNN is server numbers.
So the without SSL instructions work on IMAP port 143, POP3 port 110 and SMTP is at port 26.
Then for SSL, you need 993 for iMAP, 995 for POP3 and 465 for SMTP. These are the standards.
We have been using the mail.domain.com form and this is giving errors, the solution is to switch to the boxNNN.bluehost.com. This maps to the same IP address, but the SSL certificate is tied to the bluehost.com