The TXT record is a generic DNS record that was originally intended to carry human-readable text in a DNS record. Today, among other uses, the TXT record is used for:
To add TXT records to your account:
search?q=clearos%2C%20clearos%20content%2C%20sdn%2C%20ClearSDN%20DNS%20TXT%20Records%20and%20SPF%20Records%2C%20categorydns%2C%20subcategoryrecords%2C%20maintainer_dloper%2C%20userguide&btnI=lucky