Outlook 2013/2016: How Microsoft Outlook (MAPI over HTTP) works with network delays

A long time ago I read an article of Neil Johnson on TechNet about research on the effects of network latency and different Outlook operating modes (Online, RPC/HTTP, Cached).
Since then, it took 8 years, changed several generations of server client applications and most important is that Exchange now use newest "MAPI over HTTP" protocol. I propose to do several tests to check what has changed during this time.

As a generator of interference on the network, I used a simple, but very functional tool - http://jagt.github.io/clumsy/.

Test your connection to BlackBerry NOC/Cloud Servers

The BlackBerry UEM system administrator (BlackBerry Proxy & Control) periodically faced with situations when part or all of the BlackBerry Work clients cannot connect to their mailboxes / calendars. The reason may be on BlackBerry servers, an ISP or in home WiFi router.
To identify issues on the client side, I decided to write a PowerShell script that checks the availability of the main components that necessary for BlackBerry Work.

The script has several settings that determine which types of servers need to be checked. You can also change the server list.

The list of settings:
$country = "us"                                                            # <<<<<< 'ca' = Canada | 'ru' = Russia | 'us' = United States only (US)
$ShowBlocking = "no"                                                       # <<<<<< Set 'yes' if you want to check blocking IP and domain in Russia.
$ShowPush = "no"                                                           # <<<<<< Set 'yes' if you want to see Push Notification servers (a lot).
$ShowCloud = "yes"                                                         # <<<<<< Set 'yes' if you want to see BlackBerry UEM Cloud servers.
$ShowDirectConnect = "no"                                                  # <<<<<< Set 'yes' if you want to set dedicated BlackBerry Direct Connect servers.
$ShowBlackberryConnectivityNode = "yes"                                    # <<<<<< Set 'yes' if you want to see BlackBerry Connectivity Nodes.
$ShowBlackberrySite = "yes"                                                # <<<<<< Set 'yes' if you want to see BlackBerry site.
$ShowBEMS = "yes"                                                          # <<<<<< Set 'yes' if you want to see which serevers needed for BlackBerry Enterprise Mobility Server (BEMS).

Functions

• Checks DNS records.
• Checks delays to NOC servers.
• Checks for opening ports on NOC servers.
• “Alive” URLs of NOC servers are checked.
• Especially for Russia, the check of blocking of IP addresses and domains by Roskomnadzor is thought out (can be turned on and off).
• For companies that use Direct Connect servers, the ability to check them (you need to fill 2 variables inside the script).
• Added a block of information on connecting the computer to the Internet.
• Added check of BlackBerry Connectivity Node, BlackBerry Cloud and Push Notification servers.
• The report is presented in the HTML format.