email to an IP address

I notice that sometimes I get emails to my main POP mail box when I have visited certain sites. Obviously the webmaster can discover my email address from my IP address.

How do you do that? Is it Javascript?

Thanks

Quote:

---

Obviously the webmaster can discover my email address from my IP address

---

With the IP address, the server can find out your host name, but they shouldn't be able to get you email address.

one of three things could be happening.

1. Kind of like "Brute Force" when someone is trying to figure out passwords. A program trys different combinations until it hits one.

2. You supply your email address.

3. You open an email that has a Link in it which contains your email address in it for some kind of CGI to pick it up (name/value pairs). ie
[email protected]

Quote:

---

With the IP address, the server can find out your host name, but they shouldn't be able to get you email address.......Kind of like "Brute Force" when someone is trying to figure out passwords. A program trys different combinations until it hits one.

---

Yes, I think it must be the brute force as I never give out the email belonging to my machine (I give out the hotmail address etc if I ever do)

Thanks for your help.

Chris