Office Outlook 2003 cannot receive gmail email?

Hi
I have setup 2 gmail accounts (myaccount1@gmail.com & myaccount2@gmail.com)in Office Outlook 2003. My first account set as my default (myaccount1@gmail.com) is sending/receiving emails perfectly. My second account can only send emails, but not receive any & I receive this message:

"The server you are connected to is using a security certificate that could not be verified.
The certificates CN name does not match the passed value.
Do you want to continue using this server?

also under the errors tab I receive this:

Task?myaccount2 ? receiving? reported error (0x800CCC90): ?Your incoming (POP3) email server has reported an internal error. If you continue to receive this message, contact your server administrator or internet service provider (ISP). The server responded: 220 mx.google.com ESMTP b5sm3611691rva.so

How can I rectify this situation?

Thank you