mx01.1and1.es

mx01.1and1.es has four IP numbers. All of them are on the same IP network. mx.1and1.fr, mx02.1and1.fr, mx01.1and1.fr, mx.schlund.de, mx00.1and1.es and at least 41 other hosts point to the same IP. aab.es, sne.es, 2jj.es, tdc.es, ats.ag and at least 100 other hosts use this as a mailserver. 1and1.es is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for 1and1.es is handled by three mailservers at kundenserver.de. All of them are on the same IP network. 1and1.es has one IP number. mx01.1and1.es is hosted on four servers in Germany even though the hostname implies Spain. It is not listed in any blacklists.