DOKK / manpages / debian 10 / qmail / qmail-log.5.en
qmail-log(5) File Formats Manual qmail-log(5)

qmail-log - the qmail activity record

qmail-send prints a series of lines describing its activities. Each possible line is described below.

qmail-send is waiting for l local deliveries and r remote deliveries. The concurrency limits are L and R.
qmail-send is done.

qmail-send is unable to prepare itself for delivering messages; it is giving up. This normally indicates a serious configuration error, but it can be caused by a temporary lack of resources.
One of the other daemons has died. qmail-send will exit as soon as possible.

qmail-send is unable to record a permanent failure, usually because the disk is full. This is a very serious problem; qmail-send cannot proceed without recording the results. It will try again in ten seconds.
qmail-send tried to allocate more memory and failed. It will try again in ten seconds.
qmail-send is having trouble reading a file list from disk, usually because the system's file descriptor table is full, but possibly because permissions are set incorrectly. It will try again in ten seconds.
qmail-send was sent SIGHUP, and it is unable to reenter the queue directory. This is a very serious problem; qmail-send cannot proceed outside the queue directory. It will try again in ten seconds.
qmail-send was sent SIGHUP, but it is unable to read the new controls. It will continue operating with the original controls.

qmail-send is going to preprocess a queued message. The message number, m, is its disk inode number. After a message is removed from the queue, its number can be reused immediately.
Message m contains b bytes; its envelope sender is s; it was queued by a user with user ID u. q is a long-term queue identifier, the process ID of the qmail-queue that queued the message.
Message m had some delivery failures. The long-term queue identifier of the bounce (or double-bounce) message is q.
Message m had some delivery failures, but it is already a double-bounce message, so it must be thrown away. Triple-bounce messages do not exist.
qmail-send is about to remove message m from the queue.

qmail-send is telling qmail-lspawn or qmail-rspawn to deliver message m to one recipient. The delivery number, d, starts at 1 and increases by 1 for each new delivery.
Delivery d was successful.
Delivery d failed permanently. The message will bounce.
Delivery d failed temporarily. This recipient will be retried later.
There is a serious bug in qmail-lspawn or qmail-rspawn. This recipient will be retried later.

qmail-lspawn or qmail-rspawn has supplied a report on a nonexistent delivery. This is a serious bug.
For some reason qmail-clean is unable to remove the indicated file. It will try again later.
qmail-send was unable to write to disk the results of preprocessing a queued message. It will try again later.
There is an operating system bug.
qmail-send was unable to queue a bounce message, usually because the disk is full. It will try again later.
qmail-send was unable to record the result of a successful or permanently unsuccessful delivery. This means that the delivery will be tried again later.
qmail-send was unable to open the list of local or remote recipients for a message. It will try again later.
Either qmail-send is unable to read a recipient list, or it is unable to read the envelope of a queued message, or it is out of memory. Whatever it was doing, it will try again later.
qmail-send was unable to preprocess a queued message, usually because the disk is full. It will try again later.
qmail-send was unable to preprocess a queued message, usually because the disk is out of inodes. It will try again later.
qmail-send is unable to read the envelope of a queued message for preprocessing. It will try again later.
qmail-send is unable to queue a bounce message, usually because the machine is almost out of memory. It will try again later. This can also be caused by incorrect settings of $QMAILQUEUE or errors in a program or script which $QMAILQUEUE points to.
qmail-send is unable to obtain information about a file that should exist. It will try again later.
qmail-send is unable to remove a file. It will try again later.
qmail-send is about to exit, and it is unable to record on disk the next scheduled delivery time for a message. The message will be retried as soon as qmail-send is restarted.
There is a serious bug in either qmail-queue or qmail-send.

qmail-send(8)