I cant send mail in Outlook

[Jacko000001]

I have just installed outlook 2007 and have got a new email address, although
I receive emails, I cant send any. The following message comes up in an email
that says "Stystem Administrator" Message undeliverable, then the text says :

Your message did not reach some or all of the intended recipients.

Subject:
Sent: 21/05/2008 20:04

The following recipient(s) cannot be reached:

'************@Hotmail.com' on 21/05/2008 20:04
550 5.7.1 <***********@Hotmail.com>... Relaying denied. Proper
authentication required.

 

[F.H. Muffman]

I have just installed outlook 2007 and have got a new email address,

although I receive emails, I cant send any. The following message
comes up in an email that says "Stystem Administrator" Message
undeliverable, then the text says :

'************@Hotmail.com' on 21/05/2008 20:04
550 5.7.1 <***********@Hotmail.com>... Relaying denied.
Proper
authentication required.

Altho this isn't your ISP, look at http://www.planetmagpie.com/support/email-settings-outlook2007.aspx,
namely the Configure your Outlook 2007 for Windows to retrieve your Planetmagpie
e-mail section that shows you how to tell Outlook it needs to authenticate
for sending messages. That set of instructions was just the first on my
google, and it had good pictures.