User name and password

[Bob H]

I cannot send mail. It keeps posting the user name and password box of
which all data entered is correct. I re-enter it and hit send and the
box pops up again. It was working ok and nothing has been changed since.

 

[Mick]

Are you on an exchange server or part of a domain?

 

[Mick]

Are you using Exchange server or are you part of a domain?