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dkim dmarc EOP exchange exchange online Exchange Online Protection Exchange Server spf spoof

DMARC Quarantine Issues

I saw the following error with a client the other day when sending emails from the client to any of the Virgin Media owned consumer ISP email addresses (virginmedia.com, ntlworld.com, blueyonder.com etc.) mx3.mnd.ukmail.iss.as9143.net gave this error:vLkg1v00o2hp5bc01Lkg9w DMARC validation failed with result 3.00:quarantine In the above, the server name (…as9143.net) might change as will the value […]

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EOP exchange online Exchange Online Protection Office 365 spam spoof

Get-SpoofMailReport in EOP

Using Office 365 or EOP to protect your email and worried about spoofed emails? Then try this cmdlet in Remote PowerShell for EOP: PS C:\Users\brian.reid> Get-SpoofMailReport Date                Event Type Direction Domain Action       Spoofed Sender              True Sender     Sender IP—-                ———- ——— —— ——       ————–              ———–     ———14/04/2016 00:00:00 SpoofMail  Inbound          GoodMail     no-reply@domain.com         mandrillapp.com 198.2.186.0/2418/04/2016 00:00:00 SpoofMail  Inbound          […]