Can receive but not send messages

[BJMaggie]

I am still able to receive messages but not able to send. The error message
says "Relaying denied: you must check for new mail before sending mail."
Nothing in Help seems to apply. I tried Outlook Express and got the same
error. Thanks for any suggestions.

 

[Vince Averello [MVP - Outlook]]

Typically that happens when you're trying to use an outgoing mail (SMTP)
server isn't on the same ISP network as you. Whose server are you using and
where are you connecting?