The installed certificate does not cover this domain.

[jimmieAS]

I have successfully installed the SSL certificate for the primary domain, 

However, I now see an error for mail.myprivatecambodiataxi.com which caused the "dangerous" alert each time I try to access the mail.  

Is there a way to fix this error?

[PL281 · Accepted solution]

@jimmieAS 

Unless you purchased a wild card certificate generally speaking SSL certificates are only for the main domain and www. 

One solution is to do a Let's Encrypt Certificate for your mail domain - there are some websites which help generate this - you would have to renew the certificate ever 90 days

[jimmieAS]

@PL281 Thanks so much for your response.  

Is it harmful to not have a certificate for the mail domain?  Does it cause any problems with the site to have it for the main domain & not the mail?

Thank you

[PL281]

@jimmieAS 

It's fine as this is moreso for webmail then for sending itself