Code Blue TOOLVOX X3 - Manual (Page 119)

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ToolVox® X3
Administrator Guide
passwd database or not. If provided, the value will override all other forms of local delivery, including
Destination address for unknown recipients. This option corresponds to the mailbox_transport
directive and is disabled by default. This option may be useful in some environments, for example,
to delegate all deliveries to an agent like the cyrus IMAPD.
Optional transport for unknown recipients
If a user cannot be found in the UNIX passwd database and no alias matches the name, the
message will ordinarily be bounced or handled via the Destination address for unknown
recipients option. However, if you would like unknown users to be handled by a separate transport
method, this option overrides the Destination address for unknown recipients option. This option
correlates to the fallback_transport directive and is disabled by default.
Max number of parallel deliveries to the same local recipient
This option limits the number of simultaneous deliveries to a single local recipient. If .forward
files are allowed for users, a user may run a time-consuming command or shell script, leading to
overload caused by several processes being started up at once. This option correlates to the local_
destination_concurrency_limit directive and the default is 2. A low value is recommended for this
option, unless it is certain that no complex .forward files will be in use.
Max number of recipients per local message delivery
This option configures the maximum number of recipients per local message delivery. This option
correlates to the local_destination_recipient_limit and is set to the value of Max number of recipients
per message delivery by default.
Prepend a Delivered-To: when...
This parameter determines when Postfix should insert a Delivered-to: message header. By default,
Postfix inserts this header when forwarding mail and when delivering to a file. The defaults are
recommended, and it is generally preferable not to disable insertion into forwarded mail. This option
corresponds to the prepend_delivered_header directive.
General resource control
This page provides access to the various memory and process limits for the Postfix processes. It
is rarely necessary to alter the values on this page, except for highly loaded servers or very low
resource machines.
Max size of bounced message
This option limits the amount of original message content in bytes that will be sent in a bounce
notification. This option correlates to bounce_size_limit and defaults to 50000 bytes.
Max time for delivery to external commands
When delivering mail to an external command rather than via direct mailbox delivery, Postfix will
wait this amount of time for the delivery to complete. If this value is to be set to a high limit (3,600
seconds or more), the value of Timeout for I/O on internal comm channels in General Options
must also be increased. This option correlates to the command_time_limit directive and defaults to
1000 seconds.