You can whitelist your friends in 2 different ways

1. Send a mail to your friend. Provided you submit your mail through our server using authenticated SMTP, we will automatically pick up the fact that you've sent them mail, and add their address to the whitelist.
2. If you have a big list of friends and want to make sure they're all whitelisted, you can send mail to whitelist@ns1.knots.net with one mail address per line.
   
   Please Note, this address is also a SPAM-Trap -- if you mail to it without authenticated SMTP your email will go to feed our spam collection.

Once an address is whitelisted it will stay listed for 2 years from the last time you send it mail