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Unified Communications Diagnostics 8.4.1 - User Guide

About Unified Communications Diagnostics Getting Started Using the Management Console Introducing Management Console health tests Health tests available from the Exchange organization node
About the Exchange-based health tests Exchange Server Health Test Prerequisites for Exchange Delivery Health Tests Exchange Internal Server Delivery Health Test Exchange Internal Mailbox Delivery Health Test Exchange External Message Delivery Health Test Exchange Modern Message Delivery Health Test Exchange Storage Health Test Exchange Queue Health Test Internal Outlook Web Access (OWA) Availability Health Test External Outlook Web Access (OWA) Availability Health Test Exchange Replication Health Test Exchange System Health Test Active Directory Account Lockout Health Test Exchange Online Connectivity Health Test Exchange Online Mailbox Logon Health Test Exchange Online Message Delivery Health Test Office 365 Subscription Health Test BlackBerry Server Health Test BlackBerry Message Delivery Health Test Creating test mailboxes for Exchange Adding health sets for Exchange System health tests Configuring Exchange impersonation for the Modern Message Delivery health test
Health tests available from the Lync/Skype for Business Environment Resolving Problems with Native Tools Launching the Diagnostic Console from the Management Console Launching UC Analytics from the Management Console Diagnosing Problems using the Diagnostic Console UC Diagnostics: Exchange 2007 Diagnostic Console (Plug In) UC Diagnostics: Exchange 2010 Diagnostic Console (Plug In) UC Diagnostics: Exchange 2013 Diagnostic Console (Plug In) UC Diagnostics: Exchange 2016 Diagnostic Console (Plug In) UC Diagnostics: BlackBerry Diagnostic Console (Plug In) UC Diagnostics: OCS Diagnostic Console (Plug In) UC Diagnostics: Lync 2013 or Skype for Business 2015 Diagnostic Console (Plug In) Reporting Using Web Reports Counters with Non-Zero Alarm Values

AD/DNS Panel

The components of the Directory Services panel indicate how Exchange 2013 interacts with directory services. This information includes:

AD

Shows the status of the Active Directory (AD) servers used by this Exchange 2013 server. It will check the following conditions (non-edge Exchange servers only):

DNS

Shows the status about the Domain Name System (DNS) servers in use by this Exchange 2013 server. It will check the following conditions:

Server Roles Panel

The components of the Server Roles panel shows the Exchange 2013 roles that are installed. This information includes:

MBX

Shows whether the Mailbox role is installed on this Exchange 2013 server. The Mailbox role stores mailbox data, performs processing and rendering for client connections proxied by the Client Access server, and handles Unified Messaging requests. Mailbox servers can be organized into back-end clusters that use database availability groups (DAGs).

CAS

Shows whether the Client Access role is installed on this Exchange 2013 server. The Client Access role proxies connectivity for all clients, such as Microsoft Office Outlook, Outlook Web App, mobile devices, POP, and SMTP and also accepts mail from and delivers mail to other mail hosts on the Internet. Client access servers can be organized into Client Access server arrays.

EDG

Shows whether the Edge Transport role is installed on this Exchange 2013 server. Edge Transport servers handle the following functions:

Clients Panel

The Clients panel groups components that represent current client connections to this Exchange 2013 server. This information includes:

OWA

Indicates the number of current Outlook Web Access (OWA) users logged on to this Exchange 2013 server. The Client Access role provides OWA to allow you to access your mailbox from a web browser and have full access to all the information in the mailbox including task lists, calendar information, mail items, public folders, UNC shares and SharePoint documents. This value is decremented when users log out of their OWA session, or the session times out.

Outlook

Shows the number of users currently connected to this Exchange 2013 server through RPC over HTTP. In Microsoft Exchange Server 2013, the Outlook Anywhere feature, formerly known as RPC over HTTP, lets clients that use Microsoft Office Outlook to connect to their Exchange servers from outside the corporate network or over the Internet using the RPC over HTTP Windows networking component.

ActiveSync

Shows the number of current secure HTTP connections (HTTPS) that are established from Windows Mobile-based or Exchange ActiveSync-enabled mobile devices to this Exchange 2013 server. ActiveSync is a push-orientated protocol. Data such as user messages, schedules, contact information, and tasks are synchronized over the HTTPS connection.

Web Service

Shows the current number of connections with the World Wide Web Publishing Service (W3SVC) for this Exchange 2013 server. This information can help you determine if your server can handle the current user load.

IMAP4

Shows the number of IMAP4 connections to this Exchange 2013 server. The Client Access role provides IMAP4 access to mailbox data for clients that rely on this protocol.

IMAP4 is an Internet messaging protocol that allows you to access mail on a server or download it to your computer. IMAP4 is designed for an environment where you can log on to the server from a variety of different workstations or across slow links.

The IMAP4 protocol is disabled by default on Exchange 2013 server. If this Exchange server needs to support IMAP4 clients, start the IMAP4 service. Otherwise, leave it disabled for security reasons.

POP3

Shows the number of POP3 connections to this Exchange 2013 server.

POP3 is an Internet messaging protocol that supports simple offline mail processing. POP3 allows you to download e-mail messages from the server and store them locally on a client computer.

By default, POP3 is not enabled. If POP3 is required, start the service. If this Exchange server does not need to support POP3 clients, leave it disabled for security reasons.

UM Clients

Shows the number of voice mail calls that are currently connected to the Unified Messaging Server since the service was started.

Client Access Server (CAS)

The CAS panel groups components that represent current connections on the CAS server on this Exchange 2013 server. This information includes SMTP connection information. SMTP is the standard protocol for Internet Mail.

Exchange 2013 has an updated SMTP protocol and transport stack that does not depend on IIS. Exchange 2013 uses SMTP protocol for server-to-server message delivery within the same Active Directory site or Routing Group, between different Exchange Organizations, and when transferring mail to other email systems. This information includes:

Front-End Transport Service

Shows the CPU Usage for the Front-End Transport Service (in %).

The Transportation Role is split into two parts in Exchange 2013: Front-End Transport Service (located in the Client Access Server) and Transport Service (located in the Mailbox Server).

SMTP Inbound Connections

Shows the total number of inbound SMTP connections established by other SMTP hosts to this Exchange server. The number of connections represents the sum of all SMTP inbound connections from all remote domains to SMTP Receive Connectors on this Exchange 2013 server.

SMTP is the standard protocol for Internet Mail. Exchange 2013 has an updated SMTP protocol and transport stack that does not depend on IIS. Exchange 2013 uses SMTP protocol for server-to-server message delivery within the same Active Directory site or Routing Group, between different Exchange Organizations, and when transferring mail to other email systems.

HTTP/Proxy Outstanding Requests

Shows the quantity of concurrent outstanding proxy requests for the Microsoft Exchange HTTP Proxy access.

Avg. Authentication Latency (ms)

Shows the average time spent in authenticating CAS requests in the past 200 samples.

Avg. RPC Latency (sec)

Shows the average latency in seconds of RPC requests. Average is calculated over all RPCs since exrpc32 was loaded.

IIS Service

Shows the CPU Usage for World Wide Web Publishing Service (in %).

Exchange Server depends on the Microsoft Internet Information Services (IIS) in order to connect using HTTP. To keep email communication flowing, the IIS Service must be running properly. If the IIS Service (W3SVC) is down, some Exchange 2013 specific functionality such as ECP, EWS, Autodiscover, ActiveSync, OWA, and PowerShell will be affected.

SMTP Outbound Connections

Shows the current number of outbound SMTP connections to other SMTP hosts. The number of connections represents the sum of all SMTP outbound connections from SMTP Send Connectors on this Exchange 2013 server to all remote SMTP domains.

SMTP is the standard protocol for Internet Mail. Exchange 2013 has an updated SMTP protocol and transport stack that does not depend on IIS. Exchange 2013 uses SMTP protocol for server-to-server message delivery within the same Active Directory site or Routing Group, between different Exchange Organizations, and when transferring mail to other email systems.

Users at Max Concurrency

Shows the total quantity of the users that attain Maximum Connections Limitation.

Proxy Failure Rate

Shows the percentage of the connectivity related to the failures between the CAS servers and MBX servers in the past 200 samples.

LDAP Search Time (ms)

Shows the time to send an LDAP search request and receive a response (in milliseconds).

Inbound Connectors

Shows the number of SMTP Receive connectors on this Exchange 2013 server that can accept mail from other SMTP servers.

SMTP Receive Connectors provide the ability for a Mailbox role to receive email from any other SMTP server on the Internet, other Exchange Server 2013 Mailbox server roles, or other Exchange Server 2013 organizations. Exchange 2013 Servers can have multiple SMTP Receive connectors with different parameters for availability or performance reasons.

Outbound Connectors

Shows the number of SMTP Send connectors on this Exchange 2013 server that can send connections to other SMTP servers.

An SMTP Send connector is required for an Exchange Server 2013 to send any SMTP email to other SMTP server on the Internet or to any SMTP server within the same Exchange Server organization. More than one Exchange Mailbox server can use a Send Connector for routing purposes. The Send Connector properties in the Exchange Management Console show which Exchange Mailbox Servers in the same site can use this Send Connector through which to route mail.

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