HI i am not able to send mail from my outlook 2010 account but i received all mail plz help me out

[Rajeev Roshan]

HI i am not able to send mail from my outlook 2010 account but i received all mail plz help me out.
and shoe an error msg
(ERROR 550)

 

[Alabalcho]

Contact your e-mail provider for details how to configure your Outlook for sending.