If it is posted here, its a scam, no ifs, ands, or buts!
Any Email You Receive From Someone You Don't Personally Know Offering You Money Is a Scam!
Any Email You Receive From Someone You Don't Know Using A Free Email Address Is A Scam!
If you are not interviewed face to face, in person, the job offer is Always a scam! If you are asked to pay fees for a visa or work permit or anything else, the job offer is a scam! No real company or embassy ever uses a free email address!