If the answer is yes to most if not all of the questions above, the
spammer probably just guessed your email address. There are plenty
of bots out there that just go through and guess email addresses
based on previously known good addresses. In other words they take
the name from one account and apply it to numerous email providers.
for instance
[email protected],
[email protected], etc.
Or even if you have a specific spam account that you use to sign up
for things and say the name on the account is
[email protected],
a spammer will take hotrod1 and apply it to @gmail.com, @yahoo.com,
etc.
Now if you had your own website, like Idontlikespamatall.net,
chances are that a spammer wouldn't try to guess email addresses at
an email account from this site like
[email protected]
would not be guessed. Unless of course your junk email address is
[email protected] in which case there is a small
possibility that they might fish for email addresses using that url.