Thunderbird errors about unauthorized domains [Closed]

[pk_apps]

This one has been the most frequent one. Every time thunderbird is started, errors about unauthorized domains arise. Thus asking for permission to allow mail of custom domains. Although there were attempts to add the domain as an exception, it didn't work out. Why does it pop up ?

[Berny]

Welcome. Did you try this : Settings > Additional > Network > Manage exclusions > Enter SMTP & POP server > Add + reboot.