Not possible to configure Outlook or Thunderbird for a domain
example.combehind Cloudflare. Thunderbird shows the below error:
Unable to log in at server. Probably wrong configuration, username or password.
Mail settings configured automatically by auto-discover as
example.comfor incoming/outgoing servers.
By default, Plesk uses a domain name like
example.com for incoming/outgoing mail. When a domain is behind the Cloudflare proxy it forwards only Web traffic and blocks all others including the mail traffic. As a result, an attempt to use
example.com in mail client settings will return an error.
One of the following solutions is available:
Disable Cloudflare for the domain in the Cloudflare dashboard
Configure the mail account manually using
mail.example.comfor incoming/outgoing mail:
First, it is required to log in to the Cloudflare dashboard and configure the DNS record for
After that, apply one of the following methods:
Plesk GUI method
Install the Panel.ini Editor from the Extensions menu in Plesk.
Open Panel.ini Editor at Extensions > My Extensions.
In Panel.ini Editor, switch to the Editor tab and add the following configuration at the end of the file:
Apply the changes.