Tag Archives: Filter

26Sep/13

Mail bouncing from Microsoft’s Exchange email service in Plesk

Mails from microsoft exchange email services are failed in plesk (qmail). Upon investigation we found that the grey list filter in plesk 10 is blocking server that are on “dsl|pool|broadband|hsd” address ranges. In this case it would be Microsofts cloud anti-spam service that is on “pool” addresses.

Some Microsofts cloud anti-spam servers are;

co9outboundpool.messaging.microsoft.com
db8outboundpool.messaging.microsoft.com
db9outboundpool.messaging.microsoft.com
am1outboundpool.messaging.microsoft.com

Log entries are like this Continue reading