Which SPF record is valid for mycompany.com?

Posted by: Pdfprep Category: 300-720 Tags: , ,

Refer to the exhibit.

Which SPF record is valid for mycompany.com?
A . v=spf1 a mx ip4:199.209.31.2 -all
B . v=spf1 a mx ip4:10.1.10.23 -all
C . v=spf1 a mx ip4:199.209.31.21 -all
D . v=spf1 a mx ip4:172.16.18.230 -all

Answer: D

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