o3.sgmail.github.com MX records

MX Mail server
1h
mxa.mailgun.org 10 Primary
mxb.mailgun.org 10 Primary

Question and response

Question

dig o3.sgmail.github.com. MX

Answer

o3.sgmail.github.com. 3600 MX 10 mxa.mailgun.org. o3.sgmail.github.com. 3600 MX 10 mxb.mailgun.org.

Authority

The response has no authority records.

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0