Dec 13 2017 06:13 AM
I have the following issue with the Outlook iOS app when the client is behind my Layer 7 Firewall which does SSL inspection:
I've excluded multiple FQDNs from Microsofts official list (https://support.office.com/en-us/article/Office-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-ab...) but issue persists.
I've combed through the traffic logs of our firewall to get more details and it looks like the Outlook iOS App is connecting to IPs that do not seem to be in the official list. The thing is, every iOS client connects to a different IP, so excluding is kind of impossible.
Real Examples:
As soon as I exclude a specific IP destination from SSL decryption/inspection this one specific iOS Outlook Client works flawlessly.
What is going on here?
Jun 13 2018 10:52 AM
Jun 14 2018 11:26 AM
Jun 15 2018 05:43 AM
Thanks for replying!
No guidance from Microsoft either?
-Bryan