source: server/mail/postfix.xml@ 6732c094

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Last change on this file since 6732c094 was 6732c094, checked in by Randy McMurchy <randy@…>, 15 years ago

Updated all the XML files (and the one stylesheet) to use the 4.5 version of DocBook XML DTD

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@6716 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 27.7 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY postfix-download-http "http://www.mirrorspace.org/postfix/official/postfix-&postfix-version;.tar.gz">
8 <!ENTITY postfix-download-ftp "ftp://ftp.porcupine.org/mirrors/postfix-release/official/postfix-&postfix-version;.tar.gz">
9 <!ENTITY postfix-md5sum "f957e9319428be81c724b606fe060cc7">
10 <!ENTITY postfix-size "2.6 MB">
11 <!ENTITY postfix-buildsize "85 MB">
12 <!ENTITY postfix-time "0.5 SBU">
13]>
14
15<sect1 id="postfix" xreflabel="Postfix-&postfix-version;">
16 <?dbhtml filename="postfix.html"?>
17
18 <sect1info>
19 <othername>$LastChangedBy$</othername>
20 <date>$Date$</date>
21 </sect1info>
22
23 <title>Postfix-&postfix-version;</title>
24
25 <indexterm zone="postfix">
26 <primary sortas="a-Postfix">Postfix</primary>
27 </indexterm>
28
29 <sect2 role="package">
30 <title>Introduction to Postfix</title>
31
32 <para>The <application>Postfix</application> package contains a Mail
33 Transport Agent (MTA). This is useful for sending email to other users
34 of your host machine. It can also be configured to be a central mail
35 server for your domain, a mail relay agent or simply a mail delivery
36 agent to your local Internet Service Provider (ISP).</para>
37
38 <bridgehead renderas="sect3">Package Information</bridgehead>
39 <itemizedlist spacing="compact">
40 <listitem>
41 <para>Download (HTTP): <ulink url="&postfix-download-http;"/></para>
42 </listitem>
43 <listitem>
44 <para>Download (FTP): <ulink url="&postfix-download-ftp;"/></para>
45 </listitem>
46 <listitem>
47 <para>Download MD5 sum: &postfix-md5sum;</para>
48 </listitem>
49 <listitem>
50 <para>Download size: &postfix-size;</para>
51 </listitem>
52 <listitem>
53 <para>Estimated disk space required: &postfix-buildsize;</para>
54 </listitem>
55 <listitem>
56 <para>Estimated build time: &postfix-time;</para>
57 </listitem>
58 </itemizedlist>
59
60 <bridgehead renderas="sect3">Postfix Dependencies</bridgehead>
61
62 <!-- commenting this out as BDB is now built in LFS
63
64 <bridgehead renderas="sect4">Required</bridgehead>
65 <para role="required"><xref linkend="db"/></para>
66
67 -->
68
69 <bridgehead renderas="sect4">Optional</bridgehead>
70 <para role="optional"><xref linkend="pcre"/>,
71 <xref linkend="mysql"/>,
72 <xref linkend="postgresql"/>,
73 <xref linkend="openldap"/>,
74 <xref linkend="openssl"/>,
75 <xref linkend="cyrus-sasl"/>, and
76 <ulink url="http://cr.yp.to/cdb.html">cdb</ulink> or
77 <ulink url="http://www.corpit.ru/mjt/tinycdb.html">TinyCDB</ulink></para>
78
79 <para condition="html" role="usernotes">User Notes:
80 <ulink url="&blfs-wiki;/postfix"/></para>
81
82 </sect2>
83
84 <sect2 role="installation">
85 <title>Installation of Postfix</title>
86
87 <sect3>
88 <title>Configuring the Build</title>
89
90 <para>The <application>Postfix</application> source tree does not contain
91 a <filename>configure</filename> script, rather the makefile in the
92 top-level directory contains a <option>makefiles</option> target that
93 regenerates all the other makefiles in the build tree. If you wish to
94 use additional software such as a database back-end for virtual users, or
95 TLS/SSL authentication, you will need to regenerate the makefiles using
96 one or more of the appropriate <envar>CCARGS</envar> and
97 <envar>AUXLIBS</envar> settings listed below.</para>
98
99 <para>Here is an example that combines the TLS and
100 <application>Cyrus-SASL</application> arguments:</para>
101
102<screen><userinput>make makefiles \
103CCARGS='-DUSE_TLS -DUSE_SASL_AUTH -DUSE_CYRUS_SASL \
104 -DDEF_DAEMON_DIR=\"/usr/lib/postfix\" \
105 -DDEF_MANPAGE_DIR=\"/usr/share/man\" \
106 -DDEF_HTML_DIR=\"/usr/share/doc/postfix-&postfix-version;/html\" \
107 -DDEF_README_DIR=\"/usr/share/doc/postfix-&postfix-version;/README\" \
108 -I/usr/include/openssl -I/usr/include/sasl' \
109 AUXLIBS='-L/usr/lib -lssl -lcrypto -lsasl2'</userinput></screen>
110
111 <sect4>
112 <title>TLS Authentication</title>
113
114 <para>To use TLS authentication with postfix
115 you will need to pass the following values to the
116 <command>make makefiles</command> command:</para>
117
118<screen><literal>CCARGS='-DUSE_TLS -I/usr/include/openssl'
119AUXLIBS='-L/usr/lib -lssl -lcrypto'</literal></screen>
120
121 <para>To use TLS you will also need
122 <xref linkend="cyrus-sasl"/>.</para>
123
124 </sect4>
125
126 <sect4>
127 <title>Cyrus-SASL</title>
128
129 <para>To use <application>Cyrus-SASL</application> with
130 <application>Postfix</application>, use the following arguments:</para>
131
132<screen><literal>CCARGS='-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl'
133AUXLIBS='-L/usr/lib -lsasl2'</literal></screen>
134
135 </sect4>
136
137 <sect4>
138 <title>OpenLDAP</title>
139
140 <para>To use <application>OpenLDAP</application> with
141 <application>Postfix</application>, use the following
142 arguments:</para>
143
144<screen><literal>CCARGS='-I/usr/include -DHAS_LDAP'
145AUXLIBS='-L/usr/lib -lldap -llber'</literal></screen>
146
147 </sect4>
148
149 <sect4>
150 <title>MySQL</title>
151
152 <para>To use <application>MySQL</application> with
153 <application>Postfix</application>, use the following
154 arguments:</para>
155
156<screen><literal>CCARGS='-DHAS_MYSQL -I/usr/include/mysql'
157AUXLIBS='-L/usr/lib -lmysqlclient -lz -lm'</literal></screen>
158
159 </sect4>
160
161 <sect4>
162 <title>PostgreSQL</title>
163
164 <para>To use <application>PostgreSQL</application> with
165 <application>Postfix</application>, use the following
166 arguments:</para>
167
168<screen><literal>CCARGS='-DHAS_PGSQL -I/usr/include/postgresql'
169AUXLIBS='-L/usr/lib -lpq -lz -lm'</literal></screen>
170
171 </sect4>
172
173 <sect4>
174 <title>TinyCDB</title>
175
176 <para>To use <application>TinyCDB</application> with
177 <application>Postfix</application>, use the following
178 arguments:</para>
179
180<screen><literal>CCARGS='-DHAS_CDB'
181AUXLIBS='<replaceable>&lt;/path/to/CDB&gt;</replaceable>/libcdb.a'</literal></screen>
182
183 </sect4>
184
185 </sect3>
186
187 <sect3>
188 <title>Installing Postfix</title>
189
190 <para>Before you compile the program, you need to create users and groups
191 that will be expected to be in place during the installation.
192 Add the users and groups with the following commands issued by the
193 <systemitem class='username'>root</systemitem> user:</para>
194
195<screen role="root"><userinput>groupadd -g 32 postfix &amp;&amp;
196groupadd -g 33 postdrop &amp;&amp;
197useradd -c "Postfix Daemon User" -d /dev/null -g postfix \
198 -s /bin/false -u 32 postfix &amp;&amp;
199chown -v postfix:postfix /var/mail</userinput></screen>
200
201 <para>Install <application>Postfix</application> by running the
202 following commands:</para>
203
204<screen><userinput>make makefiles \
205CCARGS='-DDEF_DAEMON_DIR=\"/usr/lib/postfix\" \
206 -DDEF_MANPAGE_DIR=\"/usr/share/man\" \
207 -DDEF_HTML_DIR=\"/usr/share/doc/postfix-&postfix-version;/html\" \
208 -DDEF_README_DIR=\"/usr/share/doc/postfix-&postfix-version;/README\" \
209 <replaceable>&lt;additional args&gt;</replaceable>' \
210 <replaceable>&lt;AUXLIBS='additional args'&gt;</replaceable> &amp;&amp;
211make</userinput></screen>
212
213 <!-- There is a testsuite, but it fails a lot. It seems to need
214 the host to be specifically setup for the tests.
215 Run with `make tests' and `make root_tests' -->
216 <para>This package does not come with a test suite.</para>
217
218 <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
219
220<screen role='root'><userinput>sh postfix-install -non-interactive</userinput></screen>
221
222 </sect3>
223
224 </sect2>
225
226 <sect2 role="commands">
227 <title>Command Explanations</title>
228
229 <para><command>make makefiles</command>: This command rebuilds the
230 makefiles throughout the source tree to use the options contained in the
231 <envar>CCARGS</envar> and <envar>AUXLIBS</envar> variables.</para>
232
233 <para><command>sh postfix-install -non-interactive</command>: This
234 keeps the install script from asking any questions, thereby accepting
235 default destination directories in all but the few cases mentioned in
236 the 'make makefiles' command.</para>
237
238 </sect2>
239
240 <sect2 role="configuration">
241 <title>Configuring Postfix</title>
242
243 <sect3 id="postfix-config">
244 <title>Config Files</title>
245
246 <para><filename>/etc/aliases</filename>,
247 <filename>/etc/postfix/main.cf</filename>, and
248 <filename>/etc/postfix/master.cf</filename></para>
249
250 <indexterm zone="postfix postfix-config">
251 <primary sortas="e-etc-aliases">/etc/aliases</primary>
252 </indexterm>
253
254 <indexterm zone="postfix postfix-config">
255 <primary sortas="e-etc-postfix-star">/etc/postfix/*</primary>
256 </indexterm>
257
258 </sect3>
259
260 <sect3>
261 <title>Configuration Information</title>
262
263<screen role="root"><userinput>cat &gt;&gt; /etc/aliases &lt;&lt; "EOF"
264<literal># Begin /etc/aliases
265
266MAILER-DAEMON: postmaster
267postmaster: root
268
269root: LOGIN
270# End /etc/aliases</literal>
271EOF</userinput></screen>
272
273 <note>
274 <para>To protect an existing <filename>/etc/aliases</filename> file,
275 the above command appends these aliases to it if it exists. This file
276 should be checked and duplicate aliases removed, if present.</para>
277 </note>
278
279 <para>The <filename>/etc/aliases</filename> file that was just created
280 or appended, the <filename>main.cf</filename> and the
281 <filename>master.cf</filename> must be personalized for your system.
282 The <filename>aliases</filename> file needs your non-root login identity
283 so mail addressed to <systemitem class="username">root</systemitem> can
284 be forwarded to you at the user level. The <filename>main.cf</filename>
285 file needs your fully qualified hostname. All of these edits can be done
286 with <command>sed</command> commands entered into the console with
287 appropriate substitutions of your non-root login name for
288 <replaceable>&lt;user&gt;</replaceable> and your fully qualified hostname for
289 <replaceable>&lt;localhost.localdomain&gt;</replaceable>. You will find the
290 <filename>main.cf</filename> file is self documenting, so load it into
291 your editor to make the changes you need for your situation.</para>
292
293<screen role="root"><userinput>sed -i "s/LOGIN/<replaceable>&lt;user&gt;</replaceable>/" /etc/aliases &amp;&amp;
294sed -i "s/#myhostname = host.domain.tld/myhostname = \
295 <replaceable>&lt;localhost.localdomain&gt;</replaceable>/" /etc/postfix/main.cf &amp;&amp;
296/usr/bin/newaliases</userinput></screen>
297
298 <para>If you have an existing configuration, you can run the
299 <command>postfix</command> utility to add any necessary definitions
300 to your existing files. As the
301 <systemitem class="username">root</systemitem> user:</para>
302
303<screen role="root"><userinput>/usr/sbin/postfix upgrade-configuration</userinput></screen>
304
305 <para>Before starting <application>Postfix</application>, you
306 should check that your configuration and file permissions will work
307 properly. Run the following commands as the
308 <systemitem class="username">root</systemitem> user to check and
309 start your <application>Postfix</application> server:</para>
310
311<screen role="root"><userinput>/usr/sbin/postfix check &amp;&amp;
312/usr/sbin/postfix start</userinput></screen>
313
314 </sect3>
315
316 <sect3 id="postfix-init">
317 <title>Boot Script</title>
318
319 <para>To automate the running of Postfix at startup, install the
320 <filename>/etc/rc.d/init.d/postfix</filename> init script included
321 in the <xref linkend="bootscripts"/> package.</para>
322
323 <indexterm zone="postfix postfix-init">
324 <primary sortas="f-postfix">postfix</primary>
325 </indexterm>
326
327<screen role="root"><userinput>make install-postfix</userinput></screen>
328
329 </sect3>
330
331 </sect2>
332
333 <sect2 role="content">
334 <title>Contents</title>
335
336 <segmentedlist>
337 <segtitle>Installed Programs</segtitle>
338 <segtitle>Installed Libraries</segtitle>
339 <segtitle>Installed Directories</segtitle>
340
341 <seglistitem>
342 <seg>anvil, bounce, cleanup, discard, error, flush, lmtp, local, mailq,
343 master, newaliases, nqmgr, oqmgr, pickup, pipe, postalias, postcat,
344 postconf, postdrop, postfix, postkick, postlock, postlog, postmap,
345 postqueue, postsuper, proxymap, qmgr, qmqpd, sendmail, showq, smtp,
346 smtpd, spawn, tlsmgr, trivial-rewrite, verify, and virtual</seg>
347 <seg>None</seg>
348 <seg>/etc/postfix, /usr/lib/postfix and
349 /usr/share/doc/postfix-&postfix-version;</seg>
350 </seglistitem>
351 </segmentedlist>
352
353 <variablelist>
354 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
355 <?dbfo list-presentation="list"?>
356 <?dbhtml list-presentation="table"?>
357
358 <varlistentry id="anvil">
359 <term><command>anvil</command></term>
360 <listitem>
361 <para>Provides connection and rate request limiting.</para>
362 <indexterm zone="postfix anvil">
363 <primary sortas="b-anvil">anvil</primary>
364 </indexterm>
365 </listitem>
366 </varlistentry>
367
368 <varlistentry id="bounce">
369 <term><command>bounce</command></term>
370 <listitem>
371 <para>A daemon that maintains per-message log files with
372 non-delivery status information.</para>
373 <indexterm zone="postfix bounce">
374 <primary sortas="b-bounce">bounce</primary>
375 </indexterm>
376 </listitem>
377 </varlistentry>
378
379 <varlistentry id="cleanup">
380 <term><command>cleanup</command></term>
381 <listitem>
382 <para>A daemon that processes inbound mail, inserts it into the
383 incoming mail queue, and informs the queue manager of its
384 arrival.</para>
385 <indexterm zone="postfix cleanup">
386 <primary sortas="b-cleanup">cleanup</primary>
387 </indexterm>
388 </listitem>
389 </varlistentry>
390
391 <varlistentry id="discard">
392 <term><command>discard</command></term>
393 <listitem>
394 <para>Processes delivery requests from the queue manager that cannot
395 be delivered to the recipient.</para>
396 <indexterm zone="postfix discard">
397 <primary sortas="b-discard">discard</primary>
398 </indexterm>
399 </listitem>
400 </varlistentry>
401
402 <varlistentry id="error">
403 <term><command>error</command></term>
404 <listitem>
405 <para>A daemon that processes non-delivery requests from the
406 queue manager.</para>
407 <indexterm zone="postfix error">
408 <primary sortas="b-error">error</primary>
409 </indexterm>
410 </listitem>
411 </varlistentry>
412
413 <varlistentry id="flush">
414 <term><command>flush</command></term>
415 <listitem>
416 <para>A daemon that maintains a record of deferred mail by
417 destination.</para>
418 <indexterm zone="postfix flush">
419 <primary sortas="b-flush">flush</primary>
420 </indexterm>
421 </listitem>
422 </varlistentry>
423
424 <varlistentry id="lmtp">
425 <term><command>lmtp</command></term>
426 <listitem>
427 <para>A daemon that processes message delivery requests from the
428 queue manager.</para>
429 <indexterm zone="postfix lmtp">
430 <primary sortas="b-lmtp">lmtp</primary>
431 </indexterm>
432 </listitem>
433 </varlistentry>
434
435 <varlistentry id="local">
436 <term><command>local</command></term>
437 <listitem>
438 <para>A daemon that processes delivery requests from the queue
439 manager to deliver mail to local recipients.</para>
440 <indexterm zone="postfix local">
441 <primary sortas="b-local">local</primary>
442 </indexterm>
443 </listitem>
444 </varlistentry>
445
446 <varlistentry id="mailq">
447 <term><command>mailq</command></term>
448 <listitem>
449 <para>A symlink to <filename>sendmail</filename>.</para>
450 <indexterm zone="postfix mailq">
451 <primary sortas="b-mailq">mailq</primary>
452 </indexterm>
453 </listitem>
454 </varlistentry>
455
456 <varlistentry id="master">
457 <term><command>master</command></term>
458 <listitem>
459 <para>The resident process that runs
460 <application>Postfix</application> daemons on demand.</para>
461 <indexterm zone="postfix master">
462 <primary sortas="b-master">master</primary>
463 </indexterm>
464 </listitem>
465 </varlistentry>
466
467 <varlistentry id="newaliases">
468 <term><command>newaliases</command></term>
469 <listitem>
470 <para>A symlink to <filename>sendmail</filename>.</para>
471 <indexterm zone="postfix newaliases">
472 <primary sortas="b-newaliases">newaliases</primary>
473 </indexterm>
474 </listitem>
475 </varlistentry>
476
477 <varlistentry id="nqmgr">
478 <term><command>nqmgr</command></term>
479 <listitem>
480 <para>A daemon that awaits the arrival of incoming mail and
481 arranges for its delivery.</para>
482 <indexterm zone="postfix nqmgr">
483 <primary sortas="b-nqmgr">nqmgr</primary>
484 </indexterm>
485 </listitem>
486 </varlistentry>
487
488 <varlistentry id="oqmgr">
489 <term><command>oqmgr</command></term>
490 <listitem>
491 <para>The old style queue manager. This will be removed soon.</para>
492 <indexterm zone="postfix oqmgr">
493 <primary sortas="b-oqmgr">oqmgr</primary>
494 </indexterm>
495 </listitem>
496 </varlistentry>
497
498 <varlistentry id="pickup">
499 <term><command>pickup</command></term>
500 <listitem>
501 <para>A daemon that waits for hints that new mail has been
502 dropped into the maildrop directory, and feeds it into the
503 <application>cleanup</application> daemon.</para>
504 <indexterm zone="postfix pickup">
505 <primary sortas="b-pickup">pickup</primary>
506 </indexterm>
507 </listitem>
508 </varlistentry>
509
510 <varlistentry id="pipe">
511 <term><command>pipe</command></term>
512 <listitem>
513 <para>A daemon that processes requests from the queue
514 manager to deliver messages to external commands.</para>
515 <indexterm zone="postfix pipe">
516 <primary sortas="b-pipe">pipe</primary>
517 </indexterm>
518 </listitem>
519 </varlistentry>
520
521 <varlistentry id="postalias">
522 <term><command>postalias</command></term>
523 <listitem>
524 <para>Creates or queries one or more
525 <application>Postfix</application> alias databases, or updates an
526 existing one.</para>
527 <indexterm zone="postfix postalias">
528 <primary sortas="b-postalias">postalias</primary>
529 </indexterm>
530 </listitem>
531 </varlistentry>
532
533 <varlistentry id="postcat">
534 <term><command>postcat</command></term>
535 <listitem>
536 <para>Prints the contents of the
537 <application>named</application> files in human readable format.</para>
538 <indexterm zone="postfix postcat">
539 <primary sortas="b-postcat">postcat</primary>
540 </indexterm>
541 </listitem>
542 </varlistentry>
543
544 <varlistentry id="postconf">
545 <term><command>postconf</command></term>
546 <listitem>
547 <para>Displays or changes the value of
548 <application>Postfix</application> configuration parameters.</para>
549 <indexterm zone="postfix postconf">
550 <primary sortas="b-postconf">postconf</primary>
551 </indexterm>
552 </listitem>
553 </varlistentry>
554
555 <varlistentry id="postdrop">
556 <term><command>postdrop</command></term>
557 <listitem>
558 <para>Creates a file in the maildrop directory and copies
559 it's standard input to the file.</para>
560 <indexterm zone="postfix postdrop">
561 <primary sortas="b-postdrop">postdrop</primary>
562 </indexterm>
563 </listitem>
564 </varlistentry>
565
566 <varlistentry id="postfix-bin">
567 <term><command>postfix</command></term>
568 <listitem>
569 <para>Controls the operation of the
570 <application>Postfix</application> mail system.</para>
571 <indexterm zone="postfix postfix-bin">
572 <primary sortas="b-postfix">postfix</primary>
573 </indexterm>
574 </listitem>
575 </varlistentry>
576
577 <varlistentry id="postkick">
578 <term><command>postkick</command></term>
579 <listitem>
580 <para>Sends requests to the specified service over a
581 local transport channel.</para>
582 <indexterm zone="postfix postkick">
583 <primary sortas="b-postkick">postkick</primary>
584 </indexterm>
585 </listitem>
586 </varlistentry>
587
588 <varlistentry id="postlock">
589 <term><command>postlock</command></term>
590 <listitem>
591 <para>Locks a mail folder for exclusive use, and executes
592 commands passed to it.</para>
593 <indexterm zone="postfix postlock">
594 <primary sortas="b-postlock">postlock</primary>
595 </indexterm>
596 </listitem>
597 </varlistentry>
598
599 <varlistentry id="postlog">
600 <term><command>postlog</command></term>
601 <listitem>
602 <para>A <application>Postfix</application>-compatible logging
603 interface for use in, for example, shell scripts.</para>
604 <indexterm zone="postfix postlog">
605 <primary sortas="b-postlog">postlog</primary>
606 </indexterm>
607 </listitem>
608 </varlistentry>
609
610 <varlistentry id="postmap">
611 <term><command>postmap</command></term>
612 <listitem>
613 <para>Creates or queries one or more Postfix lookup
614 tables, or updates an existing one.</para>
615 <indexterm zone="postfix postmap">
616 <primary sortas="b-postmap">postmap</primary>
617 </indexterm>
618 </listitem>
619 </varlistentry>
620
621 <varlistentry id="postqueue">
622 <term><command>postqueue</command></term>
623 <listitem>
624 <para>The <application>Postfix</application> user interface for
625 queue management.</para>
626 <indexterm zone="postfix postqueue">
627 <primary sortas="b-postqueue">postqueue</primary>
628 </indexterm>
629 </listitem>
630 </varlistentry>
631
632 <varlistentry id="postsuper">
633 <term><command>postsuper</command></term>
634 <listitem>
635 <para>The <application>Postfix</application> user interface for
636 superuser queue management.</para>
637 <indexterm zone="postfix postsuper">
638 <primary sortas="b-postsuper">postsuper</primary>
639 </indexterm>
640 </listitem>
641 </varlistentry>
642
643 <varlistentry id="proxymap">
644 <term><command>proxymap</command></term>
645 <listitem>
646 <para>Provides read-only table lookup services to other
647 <application>Postfix</application> processes.</para>
648 <indexterm zone="postfix proxymap">
649 <primary sortas="b-proxymap">proxymap</primary>
650 </indexterm>
651 </listitem>
652 </varlistentry>
653
654 <varlistentry id="qmgr">
655 <term><command>qmgr</command></term>
656 <listitem>
657 <para>A daemon that awaits the arrival of incoming mail and
658 arranges for its delivery.</para>
659 <indexterm zone="postfix qmgr">
660 <primary sortas="b-qmgr">qmgr</primary>
661 </indexterm>
662 </listitem>
663 </varlistentry>
664
665 <varlistentry id="qmqpd">
666 <term><command>qmqpd</command></term>
667 <listitem>
668 <para>A daemon that receives one message per connection, and
669 pipes it through the <application>cleanup</application> daemon, and
670 places it into the incoming queue.</para>
671 <indexterm zone="postfix qmqpd">
672 <primary sortas="b-qmqpd">qmqpd</primary>
673 </indexterm>
674 </listitem>
675 </varlistentry>
676
677 <varlistentry id="scache">
678 <term><command>scache</command></term>
679 <listitem>
680 <para>Maintains a connection cache used for sharing a connection
681 multiple times.</para>
682 <indexterm zone="postfix scache">
683 <primary sortas="b-scache">scache</primary>
684 </indexterm>
685 </listitem>
686 </varlistentry>
687
688 <varlistentry id="sendmail-postfix">
689 <term><command>sendmail</command></term>
690 <listitem>
691 <para>The <application>Postfix</application> to
692 <application>Sendmail</application> compatibility interface.</para>
693 <indexterm zone="postfix sendmail-postfix">
694 <primary sortas="b-sendmail">sendmail</primary>
695 </indexterm>
696 </listitem>
697 </varlistentry>
698
699 <varlistentry id="showq">
700 <term><command>showq</command></term>
701 <listitem>
702 <para>A daemon that reports the Postfix mail queue status.</para>
703 <indexterm zone="postfix showq">
704 <primary sortas="b-showq">showq</primary>
705 </indexterm>
706 </listitem>
707 </varlistentry>
708
709 <varlistentry id="smtp">
710 <term><command>smtp</command></term>
711 <listitem>
712 <para>Looks up a list of mail exchanger addresses for the
713 destination host, sorts the list by preference, and connects to
714 each listed address until it finds a server that responds.</para>
715 <indexterm zone="postfix smtp">
716 <primary sortas="b-smtp">smtp</primary>
717 </indexterm>
718 </listitem>
719 </varlistentry>
720
721 <varlistentry id="smtpd">
722 <term><command>smtpd</command></term>
723 <listitem>
724 <para>Accepts network connection requests and performs zero
725 or more SMTP transactions per connection.</para>
726 <indexterm zone="postfix smtpd">
727 <primary sortas="b-smtpd">smtpd</primary>
728 </indexterm>
729 </listitem>
730 </varlistentry>
731
732 <varlistentry id="spawn">
733 <term><command>spawn</command></term>
734 <listitem>
735 <para>Listens on a port as specified in the
736 <application>Postfix</application> <filename>master.cf</filename> file
737 and spawns an external command whenever a connection is
738 established.</para>
739 <indexterm zone="postfix spawn">
740 <primary sortas="b-spawn">spawn</primary>
741 </indexterm>
742 </listitem>
743 </varlistentry>
744
745 <varlistentry id="tlsmgr">
746 <term><command>tlsmgr</command></term>
747 <listitem>
748 <para>Maintains the TLS session cache and acts as the PRNG
749 manager.</para>
750 <indexterm zone="postfix tlsmgr">
751 <primary sortas="b-tlsmgr">tlsmgr</primary>
752 </indexterm>
753 </listitem>
754 </varlistentry>
755
756 <varlistentry id="trivial-rewrite">
757 <term><command>trivial-rewrite</command></term>
758 <listitem>
759 <para>A daemon that rewrites addresses to standard form.</para>
760 <indexterm zone="postfix trivial-rewrite">
761 <primary sortas="b-trivial-rewrite">trivial-rewrite</primary>
762 </indexterm>
763 </listitem>
764 </varlistentry>
765
766 <varlistentry id="verify">
767 <term><command>verify</command></term>
768 <listitem>
769 <para>Maintains a record of what recipient addresses are known
770 to be deliverable or undeliverable.</para>
771 <indexterm zone="postfix verify">
772 <primary sortas="b-verify">verify</primary>
773 </indexterm>
774 </listitem>
775 </varlistentry>
776
777 <varlistentry id="virtual">
778 <term><command>virtual</command></term>
779 <listitem>
780 <para>Delivers mail to virtual user's mail directories.</para>
781 <indexterm zone="postfix virtual">
782 <primary sortas="b-virtual">virtual</primary>
783 </indexterm>
784 </listitem>
785 </varlistentry>
786
787 </variablelist>
788
789 </sect2>
790
791</sect1>
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