have you ever got an email note you this sender is domainkeys verified? I had

the gold key - a key can open your door and locked your door to safe you and your valuables
China
November 14, 2010 3:40am CST
Hi I checked my Email today, I saw a small key mark besides my friend's Email address, when I click on it it showed "this sender is domainkeys verified", I though huh? is that good or bad thing? I have never seen this key before and I have never heard about what domainkeys is. have you? the point is that my friend who is I got to know online 2 weeks ago,he seems very interested in me, and both we have been talking about our future plan, but the day that I read some information on an article online people talking about dating scammer, hmmm so I was not happy to know about this stuff people got lost money by thoes dating scammers. at the same time I start to doubt about him, so the day I told him about what I have read on line and I start to lost interesting on him, he still tried hard to explain and told me he is real and ect. we discuss about that for 2 days. and I check my Email today that besides his Email address have a key mark, says "this sender is domainkeys verified" oh!?! I do not know if that is really help or true? Any of you ever got an Email have this small key mark tells you that? Any of you know about the domainkeys? not sure if that is free by verified for anybody or people can pay money to show their real? or ect?
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