Incoming mail for dnscache2.dds.nl is handled by four mailservers at dds.nl. All of them are on the same IP network. dds.nl, mx2.dds.nl, mx1.dds.nl, mx3.dds.nl, foo.dds.nl and at least 24 other hosts share mailservers with this domain. dds.nl is a domain controlled by two nameservers also at dds.nl. They are on the same IP network. Incoming mail for dds.nl is handled by five mailservers also at dds.nl. All of them are on the same IP network. dds.nl has one IP number.