Hello,
My website has been disabled because it exceeded the 24 hour limit of 100 GB memory or 10,000 CPU. I don't know the reason. This website is not too popular and I have not used it nowadays.
Regards.
In OSX Mail, I have deleted the account and created a nuevo.
Now it works. (with warning)
Thank you!
I have found a certificate, I attache it. It looks self-signed for me.
It works with this warning.
In case of OSX Mail, the problem is the certificate of the server. I try to find out how could I avoid it. The certificate is valid, but a free one and the Mail doesn't accept it.
settings of mail client:
imap port 993 TLS/SSL checked
smtp port 465 TLS/SSL checked
error:
identity of johnny.heliohost.org cannot be verified
the server's certificate is invalid