cust.smartspb.net has no TXT records.
Question and response
Question
dig cust.smartspb.net. TXT
Answer
The response has no answer records.
Authority
cust.smartspb.net. 3600 SOA ns4.smartspb.net. hostmaster.smartspb.net. 52675 28801 1800 1209600 28800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0