How can i know for any font it's allowed to use in @font-face or not?
even if i recieve font from client, font installed in company PC, font comes with Adobe Software and MS Office?
You will have to go and find the corresponding license. I guess you don't want to use any font you've got, so just pick some that you take into consideration and check their specific license.
Another approach would be to use free fonts like Liberation, DejaVu or the Droid Fonts. They are all good and completely free to use.
Microsoft developed a so called Core fonts of the Web-pack. This pack includes some common fonts that many people already have installed. These are free to use and to download. So including these won't be a problem either.
As far as I know you need to have a license for other fonts. If they are given to you by a customer ask the customer about the license. Otherwise you have to take care for a license yourself.