I'm getting a corporate email setup error

[pascal37]

Hello friends,
I purchased corporate email. Even though I entered all the settings completely, I receive the following errors when sending an e-mail. Can you provide me with a solution?

 

[Chromaniac]

i would guess that the service you are using for email... you haven't verified that you own the email id being used here. third party mail servers ask you to verify email ids you plan to use through their network to send mail.