send email from local mail server to my gmail account

[eluser]eranbe[/eluser]
hi all
I saw many guides about hoe to configure mail server but none helped me with this problem.

Maybe I do not understand how it should work but when I send email from codeigniter, I see that the sending succeeded, My mail server (called "Test Mail Server Tool") open the mail with outlook...
but what missing for me is the mail getting to my gmail (this is my "to" parameter).

Please let me know if it's possible to send email from local server with a made up domain to gmail.
If yes, what am I missing?

Thanks