Sender ID Framework SPF Record

Question: What is SPF record? and How to make an entry of it in DNS? From last few days i could not able to send mails to hotmail. i am getting below error in header. i think i need to fill email support form of msn and send it. before that my friend told me that you need to create SPF record in DNS. i do not know how and where i can make it?
Answer: The Sender ID Framework is an e-mail authentication technology protocol that helps address the problem of spoofing and phishing by verifying the domain name from which e-mail messages are sent. Sender ID validates the origin of e-mail messages by verifying the IP address of the sender against the alleged owner of the sending domain.


How to Create Sender ID Framework SPF Record?

This is four-step guide will assist you through the process of creating a new SPF record for your DNS domain.  You need to add this DNS record to your domain's DNS configuration. Note  if you want to use some of the more advance features of the SPF format then you may need to manually edit the SPF record created by this wizard. For more details please refer to the SPF record specification at http://www.microsoft.com/senderid.

How does Sender ID Framework work?

1. Sender sends an e-mail to Receiver.
2. Receiver’s inbound e-mail server receives e-mail and calls its Sender ID Framework.
3. The Sender ID Framework looks up the SPF record of the domain that Sender is using for sending the mail.
4. The receiving Mail Transfer Agent (MTA) determines if the outbound Mail Server IP address matches IP addresses that are authorized to send mail for the user.

If you want to create a new SPF record, Microsoft is providing a "Sender ID Framework SPF Record Wizard" tool for free. Visit  "Sender ID Framework SPF Record Wizard" page here