Lotus Notes is neither POP nor IMAP. Your Domino administrator can enable these features on the mail server if they choose to, but there's a high probability that they are turned off by default. Your network admin would also need to make provisions in your company firewall to allow POP and/or IMAP access to the Domino server.
Maybe it's best that you preserved your employment by not trying to hack the company you work for.
If you're uncomfortable asking your IT department for assistance, then perhaps you shouldn't be doing what you are trying to do.