Seriously, if you are careless enough to post your full name and address in a public forum, you are leaving yourself open to scam attempts. This email is probably unconnected to a seller you have dealt with on the site.
Sending a message to a seller would not give them your full name and address.
Ebay's advice on dealing with spoof emails is below:
Suspicious email
- Don't click any links in the email or open any attachments.
- Forward the message to us as an attachment at spoof@ebay.co.uk.
We'll let you know that we received the email.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)