18
Dec
Email from outlook.com servers failing SPF records
Over the last 24 hours we have seen a few instances where valid email from Outlook.com servers has been rejected by our customers MDaemon and SecurityGateway servers due to SPF record checks. The emails getting rejected do appear to be valid messages but have been arriving from an IP address not included in the sending servers SPF records. The common factor here is that all the sending domains are using outlook.com services.
14:28 /
MDaemon