optimalfunctioning.com.	30 IN SOA ns-cloud-a1.googledomains.com.
cloud-dns-hostmaster.google.com. (
				7          ; serial
				21600      ; refresh (6 hours)
				3600       ; retry (1 hour)
				259200     ; expire (3 days)
				300        ; minimum (5 minutes)
				)

optimalfunctioning.com.	30 IN TXT "v=spf1 include:mailgun.org ~all"
optimalfunctioning.com.	30 IN TXT "dropbox-domain-verification=a54j1txr8ch5"

Mail exchangers:
optimalfunctioning.com.	30 IN MX 10 mxa.mailgun.org.
optimalfunctioning.com.	30 IN MX 10 mxb.mailgun.org.

Name servers:
optimalfunctioning.com.	30 IN NS ns-cloud-a4.googledomains.com.
optimalfunctioning.com.	30 IN NS ns-cloud-a3.googledomains.com.
optimalfunctioning.com.	30 IN NS ns-cloud-a1.googledomains.com.
optimalfunctioning.com.	30 IN NS ns-cloud-a2.googledomains.com.