spfb.netlife.ec has no MX records.
Question and response
Question
dig spfb.netlife.ec. MX
Answer
The response has no answer records.
Authority
netlife.ec. 900 SOA srv1.telconet.net. abuse.telconet.net. 393 10800 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0