magicmail1.granderiver.com has no SRV records.
Question and response
Question
dig magicmail1.granderiver.com. SRV
Answer
The response has no answer records.
Authority
granderiver.com. 900 SOA nsb.vtx1.net. fieldopadmin.vtx1.net. 54 10800 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0