SPF record does not pass verification on Gmail.com

Website, Application, Performance DNS & Network
1

I set up the following SPF record for the x-under.com domain:

v=spf1 ip4:72.167.0.0/16 ip4:184.168.0.0/16 ip4:166.62.0.0/17 ip4:108.162.192.0/18 ip4:209.85.128.0/17 include:spf-0.secureserver.net a mx ~all

However, such an entry does not pass verification in Gmail.com:

spf=none (google.com: p3plcpnl1034.prod.phx3.secureserver.net does not designate permitted sender hosts)

2

You are sending the mails with an envelope-from having “p3plcpnl1034.prod.phx3.secureserver.net” as domain.

Google tries to look for the SPF record of that domain, and doesn’t find one.

It’s not clear at all what role x-under.com plays here. Maybe you are using it in your “From:” header, but this is not what SPF is about.

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