For messages held in the queue, what is the typical default expiration period?

The typical default expiration period for messages held in the queue is 14 days. This duration is established to ensure that messages do not remain indefinitely in the queue, which could lead to email delays or discarded messages in the case of long-term storage. Maintaining a specific expiration timeframe allows for efficient management of email traffic and helps in resources optimization.

While other durations like 7 days, 30 days, or 10 days may be associated with different systems or configurations, 14 days is the standard default that helps strike a balance between giving messages enough time to be processed while also avoiding potential backlogs in the queue. This understanding is crucial for managing email systems and ensuring timely delivery of communications.