mail.ami.vn has one IP number , which is the same as for ami.vn, but the reverse is mail67.nhanhoa.com. ami.vn, 3chn.com, htlvn.com, domuc.com, necsv.com and at least 100 other hosts point to the same IP. ami.vn use this as a mailserver. ami.vn is delegated to two nameservers, however both delegated nameservers are missing in the zone and one other nameserver is listed. There are two duplicated IP numbers. Incoming mail for ami.vn is handled by one mailserver at ami.vn themselves. mail.ami.vn is hosted on a server in Vietnam.