Send/Receive problems

[LM]

When using MS outlook for my mail I'm unable to
send/receive, as soon as I hit the 'send/receive' tab I
get a message in the bottom bar saying 'Mail Delivery
complete' with the animated envelopes. If I am sending an
e-mail, it goes straight to the outbox, and stays there. I
have checked all my settings, and have used 'detect and
repair' but this has not helped.
Please can anyone help?
Thanks

 

[Guest]

The majority of the time that this error occurs is when
the mail server settings are correct but it is not
recognizing your user name or password. The second and
more unlikely problem is a server error.