User unable to send email the outlook 2007. When test account settingk, finding outbound server and unable to send test email fail. A msg from the postmaster is returned
Permanent Failure: 530_Recipient_refused._The_sender's_domain_requires_authentication_or_is_not
_a_valid_user.
upgraded to 2.62 and this started a few days later. Of course when I uncheck smtp authenctication it works fine. Incoming mail works fine so I know the user name and password are correct. Have attempted