some one else email

Hi very body
Is it only I or you have the same problem.
I get emails (spam) which are not addressed to me.
I am getting (any name@dtn.ntl.com) as well as (my name@ntl.com).
I don?t know where this (dtn) coming from, and also I am getting some emails with no mention of my name in message option.
Can I do any thing about this?
Best Regards, Sia