I've got a fundamental question. At the office, I log onto a website from my work machine utilizing a password. Then, after i am drenched-in, I'm able to read mails in outlook without needing to enter any password. Things I understand:

-- Outlook connects to switch server (which stores my emails or gathers emails where they're saved) and will get my emails

-- How's the above mentioned authentication done? Because it does not again request me for password, it has to make use of the home windows logon authentication here too. One of the ways I understand to attain single sign-on is kerberization. Is kerberization what's entering picture here or something like that else and my understanding is missing something?

Thanks,

Addition: Does NTLM something enter into picture here somewhere?