Summary
smtp.mx1.com.br has one IP number , which is the same as for
mx1.com.br, but the reverse is
svr02.mx1.com.br.
mx1.com.br,
wacs.com.br,
ibooster.net,
carrox.com.br,
olhar1.com.br and at least ten other hosts point to the same IP.
mx1.com.br,
wacs.com.br,
motox.com.br,
ibooster.net,
carrox.com.br and at least eight other hosts use this as a mailserver.
mx1.com.br is a domain controlled by two nameservers at
mx1.com.br themselves. They are on the same IP network. Incoming mail for
mx1.com.br is handled by one mailserver also at
mx1.com.br.
smtp.mx1.com.br is hosted on a server in United States even though the hostname implies Brazil.