Summary
mx-sec.terraempresas.com.br has one IP number , but the reverse is
srv3-sao.sao.terraempresas.com.br.
mx.dety.com.br,
mx2.lisot.com.br,
mx2.solorico.com.br,
mx2.expodireto.com.br,
mx-sec.viacorp.com.br and at least five other hosts cnames to this hostname.
mx.lisot.com.br,
a.mx.sae.com.br,
mx1.galo.com.br,
mx2.rosul.com.br,
mail2.spadim.com and at least 25 other hosts point to the same IP.
b4b.com.br,
otmo.com.br,
play.com.br,
duos.com.br,
lech.med.br and at least 100 other hosts use this as a mailserver.
terraempresas.com.br is a domain controlled by two nameservers at
terra.com.br. They are on the same IP network. Incoming mail for
terraempresas.com.br is handled by one mailserver at
terraempresas.com.br themselves.
terraempresas.com.br has one IP number.
mx-sec.terraempresas.com.br is hosted on a server in Brazil.