17 DNS NS record assets at ns1-73.akam.net.
smtpi.com
senderbase.biz
finaledgedev.com
spamcop.net
pxmail.com
godspeednetworks.com
iphmx.com
ironport.com
asyncfs.com
ironportdemo.com
ironportnation.com
senderbase.org
smtpi.org
postx.com
digitalcribs.net
postx.net
emailhub.net