- Plesk for Windows
- Plesk for Linux
When creating a mailbox in a mail client using auto-configuration, warning appears like as follows:
The certificate for this server is invalid
Viewing this certificate shows that it is assigned to
Plesk uses SSL certificate issued for
which is the server's hostname.
There are tree ways to resolve the issue:
Auto-configuration specifies a domain's name for incoming/outgoing connections. Manually set server's hostname during mailbox creation instead of domain's name.
Confirm Security Exception. The certificate will be applied. However, it is necessary to be sure that the certificate is secure and valid.
In DNS settings of the domain set MX record value as