When a mail message is first placed into the queue, it is given an initial priority calculated
when it was first created (?§24.9.95 on page 1077), which is stored in the P line:
P640561
This number in the qf file is really a cost. The lower it is, the more preferentially the
message is treated by sendmail. Eachtime the qf file is read, the number in the P line is
incremented. The size of that increment is set by the value of the RetryFactor option
(?§24.9.99 on page 1081). If that option is negative, this logic is inverted.
The form of the qf file P line is:
Ppri
The P must begin the line. The pri is a text representation of an integer value. The pri must
immediately follow the P withno intervening space. The text in pri is converted to an
integer using the C-library routine atol(3). That routine allows pri to be represented in text
as a signed decimal number, an octal number, or a hexadecimal number.
If pri is absent, the priority value used is that of the configuration file RetryFactor option.
If the entire P line is absent, the priority value begins at zero.
There should be only one P line in any qf file. Multiple P lines cause all but the last to be
ignored.
11.12.14 q line
Reason an envelope was quarantined V8.13 and later
When an envelope is quarantined (?§11.10 on page 438) the reason is stated in this q line.
The q line is not part of a qf file, but is actually in the quarantined hf file.
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