After checking that article i did DiG check for SPF and TXT and got the following responses:
;; QUESTION SECTION:
;highpeaksbuilders.com. IN TXT
;; ANSWER SECTION:
highpeaksbuilders.com. 3600 IN TXT "v=spf1 +a +mx -all"
and for SPF
;; QUESTION SECTION:
;highpeaksbuilders.com. IN SPF
...
I'm using Panel 11.0.9 and QMail. I have one client in particular who is getting mail returned with either one of 2 following bounce messages:
1. MTA p3plsmtpout003.prod.phx3.secureserver.net received this response from the destination host IP - 216.69.186.201 - 550 , 5.7.1 SPF unauthorized...