Cannot Validate SPF Email Authentication

Cannot Validate SPF Email Authentication

Hi,

I keep receiving the following error when authenticating SPF, "We are unable to get TXT record for SPF right now. If you have added the TXT record just now, please wait for 30-45 minutes for the changes to propagate and try again.".

Have checked the help page and authenticate through mxtoolbox and all seems have been set correctly. 

Please help urgently

Many Thanks,
Patria