This is not a problem. You can set your TTL to the lowest value your DNS provider permits. OnDMARC recommends a TTL value of 900 or the next lowest value that you are able to enter.
TTL value limitations
Written by Ivan
Updated over 4 years agoAll CollectionsGetting started with OnDMARC
My DNS provider does not let me enter a record that has a TTL value that was given to me in my DMARC record
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