What is SPF record? What do I need to do about it?

Due to the fact that a significant majority of SPAM comes from forged addresses, a new Sender Policy Framework (SPF) standard is being implemented by a number of ISPs and mail hosts, including several major providers (Hotmail, Yahoo, AOL, etc). Those providers have begun to require SPF to allow mail through their networks. Mail systems will need SPF records for their domains if they want their mail to be accepted by those providers.

1. First, make sure zone transfer of domain (example yourdomain.com) that we will dump the DNS zones is activated so we can access from our machine.
2. In our machine, run cmd
   [code]Start >> Run >> types cmd >> OK[/code]
3. After cmd run, types like below
   [code]nslookup[/code]
4. Now we must connect to server (NS) of yourdomain.com, example the name server is ns.yourdomain.com with IP address is 200.200.200.200. Types like below
   [code]server ns.yourdomain.com[/code]
   or
   
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