[robtone@fpsvr1z150:~majordom/lists]% host -t MX proofofkoncept.com       
proofofkoncept.com has no MX record
[robtone@fpsvr1z150:~majordom/lists]% host proofofkoncept.com             
proofofkoncept.com has address 84.234.26.222
[robtone@fpsvr1z150:~majordom/lists]% telnet 84.234.26.222 25             
Trying 84.234.26.222...
^C