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<?php $spfdata='v=spf1 mx 1.2.3.4 ~all'; if (preg_match('/^v=spf[a-z0-9~?\s.-]+$/i', $spfdata)){ echo "SPF seems to be ok"; } else { echo "Invalid syntax"; }
Output for rfc.property-hooks, git.master, git.master_jit
SPF seems to be ok

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