You can use the Nslookup tool to verify that your MX records are configured correctly by querying an external or Internet DNS server.
nslookup -type=mx domain.com (or nslookup -q=mx)
Find the start-of-authority for a DNS zone.
nslookup -type=soa domain.com
also you can use nslookup -q=all
Check SVR record:
nslookup -q=srv _autodiscover._tcp.domain.com
Check TXT record:
nslookup -q=txt domain.com