6 on page 422).
* Of course, if sendmail is started somewhere else or by someone else, the queue directory will be a subdirectory
under that other starting directory.
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396 | Chapter 11: Manage the Queue
11.2 Parts of a Queued Message
When a message is stored in the queue, it is split into pieces. Each piece is stored as a
separate file in the queue directory. That is, the header and other information about
the message are stored in one file, while the body (the data) is stored in another. All
told, six different types of files can appear in the queue directory. The type of each is
denoted by the first two letters of the filenames. Each filename begins with a single
letter followed by an f character. The complete list is shown in Table 11-1.
The complete form for each filename is:
Xfident
The X is one of the leading letters shown in Table 11-1. The f is the constant letter f.
The ident is a unique queue identifier associated with each mail message.
In the following sections, we first describe the identifier that is common to all the
queue file parts, then describe each file type in alphabetical order. The internal
details of the qf file can vary depending on the version of sendmail, so it is discussed
separately at the end of this chapter.
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