Configuring Queue Performance
The Queue Performance menu option allows you to set local values for default options found in Sendmail. Table 6, Table 7, Table 8 and Table 9 describe these values.
Table 6 General Queue Properties
Value | Description | Default |
|
|
|
Default Queue Directory | Location where mail is queued and | /var/spool/mqueue |
| any additional queues are defined |
|
| with this path |
|
Queue File Mode | Default permissions for files placed in | /var/spool/mqueue |
| the queue directory |
|
Queue File Mode | How to sort messages in the mail | priority |
| queue (priority, host, time, file, |
|
| random, or file modification time) |
|
Queue Timeout | Limit lifetime of a message in the | 5d (5 days) |
| queue |
|
Queue Factor | Factor used to compute the load factor | 600,000 |
| ; used for determining when to queue |
|
| mail because of high system load |
|
Queue Load Average | When the load average (average | 8 times number of CPUs present |
| number of processes in a run queue |
|
| over the last minute) exceeds this |
|
| value, mail is queued rather than |
|
| deliver them |
|
Queue Refuse Load Average | When the load average (average | 12 times the number of CPUs present |
| number of processes in a run queue |
|
| over the last minute) exceeds this |
|
| value, sendmail refuses new |
|
| connections |
|
MaxQueueChildren | Limit number of concurrent queue | 0 (no limit) |
| processors |
|
MinQueueAge | Skip queue processing if the wait time | 0 (disabled) |
| interval has not passed |
|
Recipient Factor | Used to penalize large recipient lists | 30,000 |
|
|
|
Table 7 Queue Timers
Timeout Items | Description | Default Value |
|
|
|
Queue Return | Bounce if message is undelivered | 5 days |
(for a normal message) | None | |
(for an urgent message) | None | |
(for a nonurgent message) | None | |
Queue Warn | Warn if message is undelivered | 4 hours |
(for a normal message) | None | |
(for an urgent message) | None | |
|
|
|
Table 8 describes the Sendmail timers (timeouts waiting on an SMTP protocol event,
Sendmail Server Administration 113