mail.irmig.ir has one IP number , which is the same as for irmig.ir, but no corresponding reverse pointer. aig.ir, asra.ir, iaio.ir, iaci.ir, iepg.ir and at least 71 other hosts point to the same IP. irmig.ir use this as a mailserver. irmig.ir is a domain controlled by two nameservers at isiran.com. They are on the same IP network. Incoming mail for irmig.ir is handled by two mailservers at irmig.ir themselves. Two mailservers have the same IP number. mail.irmig.ir is hosted on a server in Iran.