mx.operationearthwatch.org has no SRV records.
Question and response
Question
dig mx.operationearthwatch.org. SRV
Answer
The response has no answer records.
Authority
operationearthwatch.org. 3600 SOA dns.operationearthwatch.org. hostmaster.operationearthwatch.org. 1381979733 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0