Incoming mail for smtp.datacom.bg is handled by one mailserver at datacom.bg. smtp.datacom.bg has one IP number , which also has a corresponding reverse pointer. internet.datacom.bg point to the same IP. kolbis.bg use this as a mailserver. datacom.bg share mailservers with this domain. datacom.bg is delegated to two nameservers, however three extra nameservers are listed in the zone. All nameservers are at host1. Some of them are on the same IP network. Incoming mail for datacom.bg is handled by two mailservers also at datacom.bg. Two mailservers have the same IP number. datacom.bg has one IP number. smtp.datacom.bg is hosted on a server in Bulgaria.