Microsoft Exchange Performance Counters

Microsoft Exchange Transport Server Transport Queue Length counters

The following table shows transport queue length counters.

Counter Name	Description
\MSExchangeTransport Queues(_total)\Active Mailbox Delivery Queue Length
\MSExchangeTransport Queues(_total)\Active Non-Smtp Delivery Queue Length	Shows the number of messages in the drop directory used by a Foreign connector.
\MSExchangeTransport Queues(_total)\Active Remote Delivery Queue Length	Shows the number of messages in the active remote delivery queues.
\MSExchangeTransport Queues(_total)\Aggregate Delivery Queue Length (All Queues)	Shows the number of messages queued for delivery in all queues.
\MSExchangeTransport Queues(_total)\Largest Delivery Queue Length	Shows the number of messages in the largest delivery queues.
\MSExchangeTransport Queues(_total)\Poison Queue Length	Shows the number of messages in the poison message queue.
\MSExchangeTransport Queues(_total)\Retry Mailbox Delivery Queue Length	Shows the number of messages in a retry state attempting to deliver a message to a remote mailbox.
\MSExchangeTransport Queues(_total)\Retry Non-Smtp Delivery Queue Length	Shows the number of messages in a retry state in the non-SMTP gateway delivery queues.
\MSExchangeTransport Queues(_total)\Retry Remote Delivery Queue Length	Shows the number of messages in a retry state in the remote delivery queues.
\MSExchangeTransport Queues(_total)\Submission Queue Length	Shows the number of messages in the submission queue.
\MSExchangeTransport Queues(_total)\Unreachable Queue Length	Shows the number of messages in the Unreachable queue.