What Is Deadletter Queue?

1.	What Is Deadletter Queue?
Answer» MESSAGES are placed on the deadletter sub-queue by the messaging system in the following scenarios. ► When a message EXPIRES and deadlettering for expired messages is set to true in a queue or subscription. ► When the MAX delivery count for a message is exceeded on a queue or subscription. ► When a FILTER evaluation EXCEPTION occurs in a subscription and deadlettering is enabled on filter evaluation exceptions. Messages are placed on the deadletter sub-queue by the messaging system in the following scenarios. ► When a message expires and deadlettering for expired messages is set to true in a queue or subscription. ► When the max delivery count for a message is exceeded on a queue or subscription. ► When a filter evaluation exception occurs in a subscription and deadlettering is enabled on filter evaluation exceptions.

Answer»

MESSAGES are placed on the deadletter sub-queue by the messaging system in the following scenarios.

► When a message EXPIRES and deadlettering for expired messages is set to true in a queue or subscription.

► When the MAX delivery count for a message is exceeded on a queue or subscription.

► When a FILTER evaluation EXCEPTION occurs in a subscription and deadlettering is enabled on filter evaluation exceptions.

Messages are placed on the deadletter sub-queue by the messaging system in the following scenarios.

► When a message expires and deadlettering for expired messages is set to true in a queue or subscription.

► When the max delivery count for a message is exceeded on a queue or subscription.

► When a filter evaluation exception occurs in a subscription and deadlettering is enabled on filter evaluation exceptions.

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