How do you block your IP address when emailing people?

Is it possible to block people from emailing you other than people in your address book? and how do you do it?

• i was wondering if there was a way i can block people from emailing me other than people i have in my address book

• Answer:

  That feature is available only in messenger. For Yahoo mail you can only block a specific sender. Can I block junk mail with filters? Well, to do that you would have to know the sender’s address. And if you do know the sender’s address, your best bet is to use Yahoo! Mail’s Block Address function. You can find it by clicking Options in the upper right corner of your Mail page. Under Spam, click Spam Protection. http://help.yahoo.com/l/us/yahoo/mail/original/abuse/manage-39.html How do I block mail from a specific sender? Can I un-block it later? Yahoo! Mail makes it easy to block unwanted messages from a known address. It's just as easy to remove the block if you want to. Here's how to add a block to an email address: Click Options in the upper-right corner of your Yahoo! Mail page. From the list on the left, click Spam. In the middle of this page, in the space provided in the "Blocked Addresses" section, enter the email address from which you don't want to receive mail. Click Add. The address now appears on your list of blocked addresses. Yahoo! Mail offers up to 500 blocked email addresses. You can see how many of your blocked addresses you're using beside the list – for example, “4 of 500 used”. You can also un-block addresses whenever you want. To remove a block from an address: From the Blocked Addresses list, click the address you wish to remove. Click Remove beside your the Blocked Addresses list. After removing an address from your Blocked Addresses list, you'll be able to receive mail from that address. http://help.yahoo.com/l/us/yahoo/mail/original/abuse/abuse-09.html