emailmkt.adaptlink.com.br has no SRV records.
Question and response
Question
dig u6284503.wl004.sendgrid.net. SRV
Answer
The response has no answer records.
Authority
wl004.sendgrid.net. 1800 SOA aisha.ns.cloudflare.com. dns.cloudflare.com. 2398383764 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0