trendmicro-europe.com has no AAAA records.
Apex domains cannot have CNAME records.
Microsoft
Domain verification
MS=ms42615030
Trend Micro Email Security
Domain verification
tmes=e7348b0e258dfad94ba5f38b6ead3a65
6dpmdu0dluhn9e5k83iio6dpst
GO3BiFFY9lJsbrjWSqT7BY+s+3khpy2dL63bRhzsVag76HIfNxSn38D6C0qQgNrga2MQ1Z+hS1jOGQ0VVYb+gA==
MMKFHE4UMGSSOGM9CYJVNKB9LNYLQQXW82J4LTTA
nXPY5GMLIAZeDAz8i7uhBkbClP9jk8+M6erxYWXR9FdAfJrGyooMGsXGcxEKLC3nf75eOzzBu+HK50g3F7pPkA==
YK9E1HZZNB8KN7SZSMXQCP4ECB87EMHWYZ2EZEFI
aus1.akam.net
Akamai
eur2.akam.net
Akamai
eur5.akam.net
Akamai
ns1-155.akam.net
Akamai
ns1-72.akam.net
Akamai
usc4.akam.net
Akamai
use1.akam.net
Akamai
usw1.akam.net
Akamai
Zone apex
Start of authority
Email
Serial
2012080168
Refresh
2h
Retry
30m
Expire
1d
Negative cache TTL
2h