Can or should we establish SPF records?

Jeffrey Shaikh

March 04, 2015 00:09

While the use of SPF is growing and can be of some help in identifying junk mail, only a small percentage of mail servers look up SPF records when receiving email. If you do wish to establish SPF records for your domain, and you are using our service for outbound email filtering, you should add our IP addresses to your SPF record. Our IP addresses are:

5.10.67.0 / 255.255.255.0
92.51.176.0 / 255.255.255.0
92.51.177.0 / 255.255.255.0
94.186.161.0 / 255.255.255.0
94.186.192.0 / 255.255.255.0
174.36.154.0 / 255.255.255.0
208.43.37.0 / 255.255.255.0
208.70.88.0 / 255.255.255.0
208.70.89.0 / 255.255.255.0
208.70.90.0 / 255.255.255.0
208.70.91.0 / 255.255.255.0