I've got a problem with correctly setting up the SPF for my domains.
When I send a mail from email@example.com
I get the result: from = pass, HELO = none
I am trying to get HELO = pass
Then I try this SPF checking tool:
sending IP: 184.108.40.206
server2.swisswebhost.ch resolves to 220.127.116.11
18.104.22.168 resolves to server2.swisswebhost.ch which is a match
Unable to resolve server2.swisswebhost.ch in the DNS
I wonder what the last error means, and how to get rid of it?
"unable to resolve server2.swisswebhost.ch in the DNS"?
Thank you in advance for your help!