I can not access through POP3 to Gmail from Outlook express. I am sure that settings are fine because this worked before. I am receiving that standard The connection to the server has failed error in Outlook express. I have tried on two accounts and two different computers in my home network and the problem persist. Do you have any information about this problem?
You are having home network so I guess that you have router, right? Well, Gmail is having some issues with router that occur occasionally. I do not know why this is happening. You will have to configure two ports on router. One for outgoing mails and one for incoming mails. Now Outlook should work fine with Gmail.