Summary
mx.fr.oleane.com has one IP number , but the reverse is
mx.relay.orange-business.com.
mx1.socomor.com,
mail.cpo-fc.com,
mx1.socomore.com,
mail.genemail.net,
mail.acos-pib.com and at least eleven other hosts cnames to this hostname.
mx1.sictia.fr,
smtp.acos-pib.com,
mx.boissieredemontaigu.fr,
smtp2.extranet.oleane.net,
mx.relay.orange-business.com and at least two other hosts point to the same IP.
cdm.fr,
sop.fr,
tur.fr,
eti.fr,
bcbg.eu and at least 100 other hosts use this as a mailserver.
fr.oleane.com is a domain controlled by two nameservers at
oleane.net. They are on the same IP network. Incoming mail for
fr.oleane.com is handled by one mailserver at
mailbox.orange-business.com.
mx.fr.oleane.com is hosted on a server in France.