Non-nullable property 'Host' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'UserName' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Password' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'ExchangeName' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Host' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'SenderName' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'SenderEmail' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'SenderPassword' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'ConfirmCode' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.