Sure. thats a good idea. here it all is.... Any feedback is appreciated.
DNS Setting for my domain:
TXT: v=spf1 a mx mx:mail.mydomain.com. ip4:0.0.0.0(my domains IP) ~all
Server-wide Mail Preferences
ENABLE SPF SPAM PROTECTION
SPF Checking Mode: Only Create Received SPF headers, Never Block
SPF Local Rules: Include:spf.trusted-forwarder.org
SPF guess: a/24 mx/24 ptr
DNSReport Result:
WARNING: SPF RECORD
Your domain does not have an SPF record. This means that spammers can easily send out E-mail that looks like it came from your domain, which can make your domain look bad (if the recipient thinks you really sent it), and can cost you money (when people complain to you, rather than the spammer). You may want to add an SPF record ASAP, as 01 Oct 2004 was the target date for domains to have SPF records in place (Hotmail, for example, started checking SPF records on 01 Oct 2004).