September 2004
Intermediate to advanced
192 pages
10h 12m
English
Content preview from sendmail 8.13 Companion
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Useful Tables
Table 11-2 shows the parts of a queued message.
Table 11-3 shows the meaning of each line in the
qffile, by key letter.
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, eight different
types of files can appear in the queue directory. The type of each is
indicated by the first two letters of the filename, which begins with
a single letter followed by an f character. The
complete list is shown in Table 11-2.
Table 11-2. Queue file types
|
File |
sendmail text reference |
Description |
|---|---|---|
|
|
11.2.2[3ed] |
Data (message body) |
|
|
11.2.3[3ed] |
Lock file (obsolete and removed as of V5.62) |
|
|
11.2.4[3ed] |
ID creation file (obsolete and removed as of V5.62) |
|
|
11.2.6[3ed] |
Temporary |
|
|
11.2.7[3ed] |
Transcript file |
|
|
11.2.5[3ed] |
Queue control file (and headers) |
|
|
11.5[3ed] |
|
|
|
Section 11.1.2 [V8.13] |
|
The complete form for each filename is:
Xfident
The X is one of the leading letters shown
in Table 11-2. The f is the
constant letter f. The
ident is a unique queue identifier
associated with each mail message.
The qf File Internals
The qf file holds all the information that is needed to perform delivery of a queued mail message. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.