All - I am having trouble with email - a live.co.uk account as a pop account on my MacBook Pro.  Its worked perfectly for 14 months and has suddenly stopped working - either inbound or outbound mail.  I deleted the account and added it again and it is now receiving mail, but not sending.  What do I need to do to resolve?

I'm using incoming - pop3.live.com:995 and outgoing smtp.live.com.25

Are either or both of these incorrect?

Thanks for any advice you can offer!