MS Outlook

[i4n]

Guys,

Home one of the more computer literate people can help me out here. I have a problem with MS Outlook in that whenever I take my laptop away from home I can receive emails via a wifi hotspot or friends networl, but it won't let me send them. As soon as I connect to my home network all is good again.

I've tried searching on Google and it says something about my IP address not matching up with what Outlook is expecting but I have no idea what that means............

Edit: it's Outlook 2010 if that helps (and a legit copy too!!!!!)

Thanks,

Ian