Incoming mail for smtp.calypso.net is handled by one mailserver having a total of two IP numbers. They are on the same IP network. smtp.calypso.net has two IP numbers. They are on the same IP network. smtp-1.calypso.net and smtp-2.calypso.net point to the same IP. fmf.se, gid.se, neep.se, azpc.se, amab.se and at least 100 other hosts use this as a mailserver. fmf.se, gid.se, neep.se, azpc.se, amab.se and at least 100 other hosts share mailservers with this domain. calypso.net is a domain controlled by two nameservers at calypso.net themselves. They are on the same IP network. Incoming mail for calypso.net is handled by one mailserver having a total of two IP numbers. They are on the same IP network. calypso.net has one IP number. smtp.calypso.net is hosted on two servers in Sweden.