fgwmail.fujitsu.co.jp has no MX records.
Question and response
Question
dig fgwmail.fujitsu.co.jp. MX
Answer
The response has no answer records.
Authority
fujitsu.co.jp. 3600 SOA a3-66.akam.net. hostmaster.akamai.com. 4000000042 600 200 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0