To see postman in a dream may represent that you will hear news which you are waiting for but whose possibility is very low and you will be happy.
To speak with a postman in your dream means that you will make plans to make a surprise to a person whom you love and spend some amount of money for this. If you discuss with a postman in your dream, it refers to expenses which will occur above your expectancies.
To see yourself as a postman in your dream may indicate that you will make an important offer to the person whom you love and have an exciting travel with this person.
To see of taking money, package or goods from a postman in your dream symbolizes an investment which will be valued before the deadline. If you give money, package or commodity to the postman in your dream, it signifies owe which you will fulfill and favour which you will do because of the fulfillment of your expectancy.
To see a postman uniform in your dream means that your friend will express his/her important secret, this secret will influence you deeply but your friend won't be aware of this.