Every time I take my laptop to a different location, I have trouble sending email through Outlook 2007, getting an error stating cannot connect to the servor. I have the port settings set at 110 and 25.

Some ISP's require you to use your username/password when sending email from another network, others may block it. Under email accounts, view or change existing email accounts, select the account, more settings, then outgoing server. Select the box "My outgoing server (SMTP) requires authentication" Make sure the check box is selected.