Sending emails to Outlook

I am now educated enough to know that using the gmail server, to send emails works only to other gmail accounts. Which obviously means i can’t send to any of my Outlook accounts.

Where my real question lies, can you send to Outlook if I was able to find the server for Outlook.
Which if that is possible would anyone know how to get such an IP.

I Presume g-mail is a public style of e-mailing service and Outlook might be private or what not running throuhg a whole application and all.

Any info helps thank you!