Defragment, nodefragment Channel Options

Automatic defragmentation of message/partial messages
The MIME standard provides the message/partial content type for breaking up messages into smaller parts. This is useful when messages have to traverse networks with size limits. Information is included in each part so that the message can be automatically reassembled once it arrives at its destination.

The  channel option and the  defragmentation channel  provide the means to reassemble messages in the MTA. When a channel is marked  any message/partial messages queued to the channel will be placed in the defragmentation channel queue instead. Once all the parts have arrived the message is rebuilt and sent on its way.

The  disables this special processing. is the default.

A  channel must be present in the configuration in order for the   channel option to have any effect. Initial configuration normally includes a  channel in the MTA configuration.

See also:
 * Defragmentation channel
 * Attachments and MIME processing channel options
 * Channel options