Question regarding SPF records

[RW]

On Sat, 18 Feb 2012 12:34:09 -0500
Jonathan Vomacka wrote:


> teamwarfare.com. IN TXT "v=spf1 a mx a:mail.teamwarfare.com 
> a:mail2.teamwarfare.com ip4:66.90.73.80 ip4:216.250.250.148 ~all"
> 
> I wouldn't need an "include:" or "ptr" statement in this right? I
> would told "include:" was to include OTHER domains that are allowed
> to send e-mail, but then again I see some people writing the domain
> again as an include. Also is PTR good to use or not?


If you can specify the servers  with ip addresses then that's all you
need.