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How can I tell if a domain has been migrated to the Ironport anti-spam system?

April 26, 2017anti-spam domain ironport migrated system

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How can I tell if a domain has been migrated to the Ironport anti-spam system?

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• Browse to http://www.demon.net/external/ • Enter the RM hosted email domain you are trying to send to in the ‘Examine the DNS Data on a Particular Domain’ field and click ‘Submit’. • If the domain has been migrated to the Ironport anti-spam system, the lowest numbered MX record will show ‘in.mx.ifl.net’, eg mail is handled by 10 in.mx.ifl.net • If the lowest numbered MX record shows as an address other than in.mx.ifl.net, ending in ‘ifl.net’ or ‘rmplc.co.uk’, then the domain has not been migrated to the Ironport anti-spam system. For more information on the Ironport anti-spam system, please refer to the ‘Forthcoming improvements to spam filtering’ article, linked from the bottom of this page.