Getting a "TLS Negotiation failed, the certificate doesn't match the host" This situation happens when using Gmail as a platform to SEND mail from a custom website email address through a web hosting platform.
I was having this issue come up when sending or responding to Sales@scottrothevents.com emails that I use through the gmail platform. Now that the lockdowns are winding down and my son was able to go back to daycare I decided to finally sit and figure out what was going on. It involves going into the Cpanel on my hosting side (webhostingpad.com) and going into the Email Deliverabilty and lining up the info in that screen to my gmail settings
I hope this video helps those of you with this problem