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Blog Post: IP Ranges Added to EOP

Andrew Stobart

On TechNet we publish the range of IP addresses that are used when sending mail out of a custom EOP connector. If you have created an EOP on-premises connector to deliver inbound mail to your on-premises mail environment, or an EOP partner connector to deliver mail to a partner, the IPs used in these...

on 6 Jan 2015
Blog Post: Inbound Connector Configuration You’ll Want to Avoid

Andrew Stobart

I recently worked with a customer who had a configuration in their EOP outbound connector that broke inbound mail for a newly added domain. I want to share this tale in hopes that you not only learn more about EOP partner connectors, but that you decrease the change of breaking your own mail flow. So...

on 5 Sep 2014
Blog Post: On-Premises Delivery Failover

Andrew Stobart

Organizations with on-premises mail environments often will have a primary site and at least one backup site. When Exchange Online Protection is being used to protect those on-premises mail environments, the ideal configuration would have EOP only delivering mail to the primary on-premises site, and...

on 2 Jul 2014
Blog Post: Outbound Connector Smart Host Behavior

Andrew Stobart

If you have an on-premises mail environment that you are protecting with Exchange Online Protection (EOP) then you’ll need to create some connectors in the cloud. This article is going to focus on EOP Outbound Connectors and how they deliver mail when configured with a smart host. Keep in mind...

on 18 Jun 2014
Blog Post: TLS, Connectors, and You

Andrew Stobart

Update (September 3, 2014) I was recently involved in a case where a customer needed more information about the certificate that EOP presents. Being the nice guy that I am, I wanted to share it here! As mentioned in this article, the CN of the certificate that EOP presents is mail.protection.outlook...

on 6 Jun 2014