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You want to copy/paste this and it should work.
Here’s the entry
Adding a SPF Record, the easy way
v=spf1 mx a -all
So you add a TXT record and paste this in the TXT line.
What does it mean
v=spf1 means version spf1
mx a means the address of the MX record is allowed to send mail in your domain’s name.
-all means all other IPs aren’t allowed to and should be considered spam.
So if your Email server is the same as the web server you send mail from, add this line and it should work as soon as the record change propagates globally.