h (?§3.4.22 on
page 120). Prior to V8.12, there could be only one M line in a qf file.
11.12.12 N line
Number of times tried V8.7 and later
Eachtime delivery is attempted for a message, the number stored in its qf file??™s N line is
incremented by one. This number always begins at zero.
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11.12 The qf File Internals | 453
When delivering many messages to a single host, sendmail remembers failures. If one
message fails to make it all the way through an SMTP dialog, all the following messages to
that same host will be deferred (not attempted during the current queue run). For those
deferred messages, the number of tries is correctly incremented as though the delivery was
actually attempted.
The value in this N line is used to determine whether the delay of the MinQueueAge option
(?§24.9.78 on page 1057) should be triggered. This value, when zero, can also be used to
enable a special first-time connection timeout (?§24.9.119.12 on page 1103).
11.12.13 P line
Priority when processed from queue All versions of sendmail
Not all messages need to be treated equally. Messages that have failed often, for example,
tend to continue to fail. When sendmail processes the messages in its queue, it sorts them
by priority and attempts to deliver those with the lowest priority value first.
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