Hold channel

When messages are incoming to a user whose   attribute (more precisely, the attribute named by the    MTA option) is set to a value of  , or who is in a domain whose    attribute (more precisely, the attribute  named by the    MTA option) is set to a value  of  , then the messages will be routed to the hold  channel and will be marked as. (Both of these things---the routing to the hold channel, and the marking of the message as  ---are configured via the      MTA option&#x27;s    value for the   clause.)

The hold channel is intended for temporarily detaining messages addressed to users (or to users in domains) for purposes such as  migration of the users&#x27; (or an entire domain of users&#x27;) mailboxes. The incoming messages can be sidelined in the hold channel queue area on  disk, and then once the users&#x27; mailboxes are once again ready to  receive e-mail, and the user and/or domain status has been set back to  , the messages can be delivered onwards.

Hold channel configurationdiscusses the basic configuration of the hold channel. Releasing messages from the hold channel discusses how to release messages from the hold channel.

See also:
 * delivery_options MTA Option
 * ldap_user_mail_status MTA Option
 * ldap_domain_attr_mail_status Option
 * Hold channel configuration
 * Diagnosing .HELD files
 * Available channels
 * Channels