Are you a musician who signed up on Number One Music (www.numberonemusic.com)?
Surely you tried the “promote your band” section and sent something. Since then, you may received e-mails like these:
“hey ya i’m really impressed, good music. I’ll send da link to your n1m profile to my frind, he knows the guy at tvt rec… peace”
Im really enjoying listening to your music. :)
I’ll send a link to your page to all my friends. Is it possible to buy your cd with paypal?
“Let the light shine your way and the stars guide your steps.
You definitely have a lot of talent.”
Well, if you see the e-mail code, you can see the return-path is not the “fan’s address”, but this one:
“Ok”, I thought… “But this is not enough. I would like to verify these other e-mail addresses…”
And I discovered that you can do it, for example, on http://verify-email.org/. I entered the “fans’ e-mails”, and the verifier answered this with all of the addresses:
Description: 220-networks to accept, transmit, or distribute unsolicited bulk”
I verified the subscribers’ ones, and some of them return “bad” too. It seems that “@earthling.net”, “@mail.com” and “@mindless.com” are bulk domains… maybe there are more.
Have you thought about becoming a premium user?