arsmtp.com has no TXT records.
Question and response
Question
dig arsmtp.com. TXT
Answer
The response has no answer records.
Authority
arsmtp.com. 600 SOA mdns1.appriver.com. support.appriver.com. 11125389 900 600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0