Queue Configuration

The Queue Configurations allows limitations such as Queue Lifetime, Message Size Limits and Mailbox Size Limits to be set.

Queue Lifetime

When mail is sent or received it first goes in to a queue. When the destination mail server responds and accepts the recipient message it will be removed from the queue and delivered to the user. However if the mail server recipient is not responding or is unreachable, it will wait in the queue until it can be delivered later.

This options determines how long the e-mail message will wait in the queue before being deleted. The default value is 5 days. While in the queue the mail server will keep trying to send it by default every 1000 seconds (16 minutes 40 seconds).

Message Size Limits

This determines the maximum size a message is allowed to be. This includes the body of the message and any attachments.

This size limit is in bytes. So in the example above it's 10240000 bytes, 10240KB or 10MB.

Mailbox Size Limits

Each user with an e-mail account has their mail stored on some mail server. This option determines the maximum size a users mailbox is allowed to reach. If the user exceeds this size e-mail will be rejected when the server receives it.

As with the Message Size Limits, this number is also in bytes.