Question and response
Question
dig cluster1.eu.messagelabs.com. MX
Answer
cluster1.eu.messagelabs.com. 60 MX 10 mail830.messagelabs.com.
cluster1.eu.messagelabs.com. 60 MX 10 mail837.messagelabs.com.
cluster1.eu.messagelabs.com. 60 MX 10 mail850.messagelabs.com.
cluster1.eu.messagelabs.com. 60 MX 10 mail855.messagelabs.com.
cluster1.eu.messagelabs.com. 60 MX 10 mail872.messagelabs.com.
cluster1.eu.messagelabs.com. 60 MX 10 mail878.messagelabs.com.
Authority
messagelabs.com. 180 NS ns-1296.awsdns-34.org.
messagelabs.com. 180 NS ns-1714.awsdns-22.co.uk.
messagelabs.com. 180 NS ns-453.awsdns-56.com.
messagelabs.com. 180 NS ns-520.awsdns-01.net.
Additional
mail830.messagelabs.com. 900 A 85.158.142.217
mail837.messagelabs.com. 900 A 85.158.142.213
mail850.messagelabs.com. 900 A 195.245.230.192
mail855.messagelabs.com. 900 A 195.245.230.197
mail872.messagelabs.com. 900 A 195.245.231.67
mail878.messagelabs.com. 900 A 195.245.231.74
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0