Question and response
Question
dig spfmx1.domainkey.freshemail.io. MX
Answer
spfmx1.domainkey.freshemail.io. 60 MX 10 mxa.freshdesk.com.
spfmx1.domainkey.freshemail.io. 60 MX 20 mxb.freshdesk.com.
spfmx1.domainkey.freshemail.io. 60 MX 50 mx.sendgrid.net.
Authority
freshemail.io. 172800 NS ns-1213.awsdns-23.org.
freshemail.io. 172800 NS ns-1972.awsdns-54.co.uk.
freshemail.io. 172800 NS ns-285.awsdns-35.com.
freshemail.io. 172800 NS ns-519.awsdns-00.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0