source: server/mail/postfix.xml@ 45cd2f9

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Last change on this file since 45cd2f9 was 45cd2f9, checked in by DJ Lucas <dj@…>, 16 years ago

Updated to Postfix-2.5.1.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@7255 af4574ff-66df-0310-9fd7-8a98e5e911e0
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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://postfix.energybeam.com/source/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 "95a559c509081fdd07d78eafd4f4c3b4">
10 <!ENTITY postfix-size "3 MB">
11 <!ENTITY postfix-buildsize "97 MB">
12 <!ENTITY postfix-time "0.4 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>Perl compatible regular expressions</title>
113
114 <para>To use <application>PCRE</application> with
115 <application>Postfix</application>, use the following arguments:</para>
116
117<screen><literal>CCARGS='-DHAS_PCRE -I/usr/include'
118AUXLIBS='-L/usr/lib -lpcre'</literal></screen>
119
120 </sect4>
121
122 <sect4>
123 <title>Cyrus-SASL</title>
124
125 <para>To use <application>Cyrus-SASL</application> with
126 <application>Postfix</application>, use the following arguments:</para>
127
128<screen><literal>CCARGS='-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl'
129AUXLIBS='-L/usr/lib -lsasl2'</literal></screen>
130
131 </sect4>
132
133 <sect4>
134 <title>Berkely DB</title>
135
136 <para>To use <application>Berkely DB</application> with
137 <application>Postfix</application>, use the following
138 arguments:</para>
139
140<screen><literal>CCARGS='-DHAS_DB -I/usr/include'
141AUXLIBS='-L/usr/lib -ldb'</literal></screen>
142
143 </sect4>
144
145 <sect4>
146 <title>OpenLDAP</title>
147
148 <para>To use <application>OpenLDAP</application> with
149 <application>Postfix</application>, use the following
150 arguments:</para>
151
152<screen><literal>CCARGS='-DHAS_LDAP -I/usr/include'
153AUXLIBS='-L/usr/lib -lldap -llber'</literal></screen>
154
155 </sect4>
156
157 <sect4>
158 <title>MySQL</title>
159
160 <para>To use <application>MySQL</application> with
161 <application>Postfix</application>, use the following
162 arguments:</para>
163
164<screen><literal>CCARGS='-DHAS_MYSQL -I/usr/include/mysql'
165AUXLIBS='-L/usr/lib -lmysqlclient -lz -lm'</literal></screen>
166
167 </sect4>
168
169 <sect4>
170 <title>PostgreSQL</title>
171
172 <para>To use <application>PostgreSQL</application> with
173 <application>Postfix</application>, use the following
174 arguments:</para>
175
176<screen><literal>CCARGS='-DHAS_PGSQL -I/usr/include/postgresql'
177AUXLIBS='-L/usr/lib -lpq -lz -lm'</literal></screen>
178
179 </sect4>
180
181 <sect4>
182 <title>CDB/TinyCDB</title>
183
184 <para>To use <application>CDB</application> or
185 <application>TinyCDB</application> with
186 <application>Postfix</application>, use the following
187 arguments:</para>
188
189<screen><literal>CCARGS='-DHAS_CDB'
190AUXLIBS='<replaceable>&lt;/path/to/CDB&gt;</replaceable>/libcdb.a'</literal></screen>
191
192 </sect4>
193
194 <sect4>
195 <title>StartTLS Authentication</title>
196
197 <para>To use <application>OpenSSL</application> with
198 <application>Postfix</application>, use the following
199 arguments:</para>
200
201<screen><literal>CCARGS='-DUSE_TLS -I/usr/include/openssl/'
202AUXLIBS='-L/usr/lib -lssl -lcrypto'</literal></screen>
203
204 </sect4>
205
206 </sect3>
207
208 <sect3>
209 <title>Installing Postfix</title>
210
211 <para>Before you compile the program, you need to create users and groups
212 that will be expected to be in place during the installation.
213 Add the users and groups with the following commands issued by the
214 <systemitem class='username'>root</systemitem> user:</para>
215
216<screen role="root"><userinput>groupadd -g 32 postfix &amp;&amp;
217groupadd -g 33 postdrop &amp;&amp;
218useradd -c "Postfix Daemon User" -d /dev/null -g postfix \
219 -s /bin/false -u 32 postfix &amp;&amp;
220chown -v postfix:postfix /var/mail</userinput></screen>
221
222 <para>Install <application>Postfix</application> by running the
223 following commands:</para>
224
225<screen><userinput>make makefiles \
226CCARGS='-DDEF_DAEMON_DIR=\"/usr/lib/postfix\" \
227 -DDEF_MANPAGE_DIR=\"/usr/share/man\" \
228 -DDEF_HTML_DIR=\"/usr/share/doc/postfix-&postfix-version;/html\" \
229 -DDEF_README_DIR=\"/usr/share/doc/postfix-&postfix-version;/README\" \
230 <replaceable>&lt;additional args&gt;</replaceable>' \
231 <replaceable>&lt;AUXLIBS='additional args'&gt;</replaceable> &amp;&amp;
232make</userinput></screen>
233
234 <!-- There is a testsuite, but it fails a lot. It seems to need
235 the host to be specifically setup for the tests.
236 Run with `make tests' and `make root_tests' -->
237 <para>This package does not come with a test suite.</para>
238
239 <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
240
241<screen role='root'><userinput>sh postfix-install -non-interactive</userinput></screen>
242
243 </sect3>
244
245 </sect2>
246
247 <sect2 role="commands">
248 <title>Command Explanations</title>
249
250 <para><command>make makefiles</command>: This command rebuilds the
251 makefiles throughout the source tree to use the options contained in the
252 <envar>CCARGS</envar> and <envar>AUXLIBS</envar> variables.</para>
253
254 <para><command>sh postfix-install -non-interactive</command>: This
255 keeps the install script from asking any questions, thereby accepting
256 default destination directories in all but the few cases mentioned in
257 the 'make makefiles' command.</para>
258
259 </sect2>
260
261 <sect2 role="configuration">
262 <title>Configuring Postfix</title>
263
264 <sect3 id="postfix-config">
265 <title>Config Files</title>
266
267 <para><filename>/etc/aliases</filename>,
268 <filename>/etc/postfix/main.cf</filename>, and
269 <filename>/etc/postfix/master.cf</filename></para>
270
271 <indexterm zone="postfix postfix-config">
272 <primary sortas="e-etc-aliases">/etc/aliases</primary>
273 </indexterm>
274
275 <indexterm zone="postfix postfix-config">
276 <primary sortas="e-etc-postfix-star">/etc/postfix/*</primary>
277 </indexterm>
278
279 </sect3>
280
281 <sect3>
282 <title>Configuration Information</title>
283
284<screen role="root"><userinput>cat &gt;&gt; /etc/aliases &lt;&lt; "EOF"
285<literal># Begin /etc/aliases
286
287MAILER-DAEMON: postmaster
288postmaster: root
289
290root: LOGIN
291# End /etc/aliases</literal>
292EOF</userinput></screen>
293
294 <note>
295 <para>To protect an existing <filename>/etc/aliases</filename> file,
296 the above command appends these aliases to it if it exists. This file
297 should be checked and duplicate aliases removed, if present.</para>
298 </note>
299
300 <para>The <filename>/etc/aliases</filename> file that was just created
301 or appended, the <filename>main.cf</filename> and the
302 <filename>master.cf</filename> must be personalized for your system.
303 The <filename>aliases</filename> file needs your non-root login identity
304 so mail addressed to <systemitem class="username">root</systemitem> can
305 be forwarded to you at the user level. The <filename>main.cf</filename>
306 file needs your fully qualified hostname. All of these edits can be done
307 with <command>sed</command> commands entered into the console with
308 appropriate substitutions of your non-root login name for
309 <replaceable>&lt;user&gt;</replaceable> and your fully qualified hostname for
310 <replaceable>&lt;localhost.localdomain&gt;</replaceable>. You will find the
311 <filename>main.cf</filename> file is self documenting, so load it into
312 your editor to make the changes you need for your situation.</para>
313
314<screen role="root"><userinput>sed -i "s/LOGIN/<replaceable>&lt;user&gt;</replaceable>/" /etc/aliases &amp;&amp;
315sed -i "s/#myhostname = host.domain.tld/myhostname = \
316 <replaceable>&lt;localhost.localdomain&gt;</replaceable>/" /etc/postfix/main.cf &amp;&amp;
317/usr/bin/newaliases</userinput></screen>
318
319 <para>If you have an existing configuration, you can run the
320 <command>postfix</command> utility to add any necessary definitions
321 to your existing files. As the
322 <systemitem class="username">root</systemitem> user:</para>
323
324<screen role="root"><userinput>/usr/sbin/postfix upgrade-configuration</userinput></screen>
325
326 <para>Before starting <application>Postfix</application>, you
327 should check that your configuration and file permissions will work
328 properly. Run the following commands as the
329 <systemitem class="username">root</systemitem> user to check and
330 start your <application>Postfix</application> server:</para>
331
332<screen role="root"><userinput>/usr/sbin/postfix check &amp;&amp;
333/usr/sbin/postfix start</userinput></screen>
334
335 </sect3>
336
337 <sect3 id="postfix-init">
338 <title>Boot Script</title>
339
340 <para>To automate the running of Postfix at startup, install the
341 <filename>/etc/rc.d/init.d/postfix</filename> init script included
342 in the <xref linkend="bootscripts"/> package.</para>
343
344 <indexterm zone="postfix postfix-init">
345 <primary sortas="f-postfix">postfix</primary>
346 </indexterm>
347
348<screen role="root"><userinput>make install-postfix</userinput></screen>
349
350 </sect3>
351
352 </sect2>
353
354 <sect2 role="content">
355 <title>Contents</title>
356
357 <segmentedlist>
358 <segtitle>Installed Programs</segtitle>
359 <segtitle>Installed Libraries</segtitle>
360 <segtitle>Installed Directories</segtitle>
361
362 <seglistitem>
363 <seg>anvil, bounce, cleanup, discard, error, flush, lmtp, local, mailq,
364 master, newaliases, nqmgr, oqmgr, pickup, pipe, postalias, postcat,
365 postconf, postdrop, postfix, postkick, postlock, postlog, postmap,
366 postqueue, postsuper, proxymap, qmgr, qmqpd, sendmail, showq, smtp,
367 smtpd, spawn, tlsmgr, trivial-rewrite, verify, and virtual</seg>
368 <seg>None</seg>
369 <seg>/etc/postfix, /usr/lib/postfix and
370 /usr/share/doc/postfix-&postfix-version;</seg>
371 </seglistitem>
372 </segmentedlist>
373
374 <variablelist>
375 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
376 <?dbfo list-presentation="list"?>
377 <?dbhtml list-presentation="table"?>
378
379 <varlistentry id="anvil">
380 <term><command>anvil</command></term>
381 <listitem>
382 <para>Provides connection and rate request limiting.</para>
383 <indexterm zone="postfix anvil">
384 <primary sortas="b-anvil">anvil</primary>
385 </indexterm>
386 </listitem>
387 </varlistentry>
388
389 <varlistentry id="bounce">
390 <term><command>bounce</command></term>
391 <listitem>
392 <para>A daemon that maintains per-message log files with
393 non-delivery status information.</para>
394 <indexterm zone="postfix bounce">
395 <primary sortas="b-bounce">bounce</primary>
396 </indexterm>
397 </listitem>
398 </varlistentry>
399
400 <varlistentry id="cleanup">
401 <term><command>cleanup</command></term>
402 <listitem>
403 <para>A daemon that processes inbound mail, inserts it into the
404 incoming mail queue, and informs the queue manager of its
405 arrival.</para>
406 <indexterm zone="postfix cleanup">
407 <primary sortas="b-cleanup">cleanup</primary>
408 </indexterm>
409 </listitem>
410 </varlistentry>
411
412 <varlistentry id="discard">
413 <term><command>discard</command></term>
414 <listitem>
415 <para>Processes delivery requests from the queue manager that cannot
416 be delivered to the recipient.</para>
417 <indexterm zone="postfix discard">
418 <primary sortas="b-discard">discard</primary>
419 </indexterm>
420 </listitem>
421 </varlistentry>
422
423 <varlistentry id="error">
424 <term><command>error</command></term>
425 <listitem>
426 <para>A daemon that processes non-delivery requests from the
427 queue manager.</para>
428 <indexterm zone="postfix error">
429 <primary sortas="b-error">error</primary>
430 </indexterm>
431 </listitem>
432 </varlistentry>
433
434 <varlistentry id="flush">
435 <term><command>flush</command></term>
436 <listitem>
437 <para>A daemon that maintains a record of deferred mail by
438 destination.</para>
439 <indexterm zone="postfix flush">
440 <primary sortas="b-flush">flush</primary>
441 </indexterm>
442 </listitem>
443 </varlistentry>
444
445 <varlistentry id="lmtp">
446 <term><command>lmtp</command></term>
447 <listitem>
448 <para>A daemon that processes message delivery requests from the
449 queue manager.</para>
450 <indexterm zone="postfix lmtp">
451 <primary sortas="b-lmtp">lmtp</primary>
452 </indexterm>
453 </listitem>
454 </varlistentry>
455
456 <varlistentry id="local">
457 <term><command>local</command></term>
458 <listitem>
459 <para>A daemon that processes delivery requests from the queue
460 manager to deliver mail to local recipients.</para>
461 <indexterm zone="postfix local">
462 <primary sortas="b-local">local</primary>
463 </indexterm>
464 </listitem>
465 </varlistentry>
466
467 <varlistentry id="mailq">
468 <term><command>mailq</command></term>
469 <listitem>
470 <para>A symlink to <filename>sendmail</filename>.</para>
471 <indexterm zone="postfix mailq">
472 <primary sortas="b-mailq">mailq</primary>
473 </indexterm>
474 </listitem>
475 </varlistentry>
476
477 <varlistentry id="master">
478 <term><command>master</command></term>
479 <listitem>
480 <para>The resident process that runs
481 <application>Postfix</application> daemons on demand.</para>
482 <indexterm zone="postfix master">
483 <primary sortas="b-master">master</primary>
484 </indexterm>
485 </listitem>
486 </varlistentry>
487
488 <varlistentry id="newaliases">
489 <term><command>newaliases</command></term>
490 <listitem>
491 <para>A symlink to <filename>sendmail</filename>.</para>
492 <indexterm zone="postfix newaliases">
493 <primary sortas="b-newaliases">newaliases</primary>
494 </indexterm>
495 </listitem>
496 </varlistentry>
497
498 <varlistentry id="nqmgr">
499 <term><command>nqmgr</command></term>
500 <listitem>
501 <para>A daemon that awaits the arrival of incoming mail and
502 arranges for its delivery.</para>
503 <indexterm zone="postfix nqmgr">
504 <primary sortas="b-nqmgr">nqmgr</primary>
505 </indexterm>
506 </listitem>
507 </varlistentry>
508
509 <varlistentry id="oqmgr">
510 <term><command>oqmgr</command></term>
511 <listitem>
512 <para>The old style queue manager. This will be removed soon.</para>
513 <indexterm zone="postfix oqmgr">
514 <primary sortas="b-oqmgr">oqmgr</primary>
515 </indexterm>
516 </listitem>
517 </varlistentry>
518
519 <varlistentry id="pickup">
520 <term><command>pickup</command></term>
521 <listitem>
522 <para>A daemon that waits for hints that new mail has been
523 dropped into the maildrop directory, and feeds it into the
524 <application>cleanup</application> daemon.</para>
525 <indexterm zone="postfix pickup">
526 <primary sortas="b-pickup">pickup</primary>
527 </indexterm>
528 </listitem>
529 </varlistentry>
530
531 <varlistentry id="pipe">
532 <term><command>pipe</command></term>
533 <listitem>
534 <para>A daemon that processes requests from the queue
535 manager to deliver messages to external commands.</para>
536 <indexterm zone="postfix pipe">
537 <primary sortas="b-pipe">pipe</primary>
538 </indexterm>
539 </listitem>
540 </varlistentry>
541
542 <varlistentry id="postalias">
543 <term><command>postalias</command></term>
544 <listitem>
545 <para>Creates or queries one or more
546 <application>Postfix</application> alias databases, or updates an
547 existing one.</para>
548 <indexterm zone="postfix postalias">
549 <primary sortas="b-postalias">postalias</primary>
550 </indexterm>
551 </listitem>
552 </varlistentry>
553
554 <varlistentry id="postcat">
555 <term><command>postcat</command></term>
556 <listitem>
557 <para>Prints the contents of the
558 <application>named</application> files in human readable format.</para>
559 <indexterm zone="postfix postcat">
560 <primary sortas="b-postcat">postcat</primary>
561 </indexterm>
562 </listitem>
563 </varlistentry>
564
565 <varlistentry id="postconf">
566 <term><command>postconf</command></term>
567 <listitem>
568 <para>Displays or changes the value of
569 <application>Postfix</application> configuration parameters.</para>
570 <indexterm zone="postfix postconf">
571 <primary sortas="b-postconf">postconf</primary>
572 </indexterm>
573 </listitem>
574 </varlistentry>
575
576 <varlistentry id="postdrop">
577 <term><command>postdrop</command></term>
578 <listitem>
579 <para>Creates a file in the maildrop directory and copies
580 it's standard input to the file.</para>
581 <indexterm zone="postfix postdrop">
582 <primary sortas="b-postdrop">postdrop</primary>
583 </indexterm>
584 </listitem>
585 </varlistentry>
586
587 <varlistentry id="postfix-bin">
588 <term><command>postfix</command></term>
589 <listitem>
590 <para>Controls the operation of the
591 <application>Postfix</application> mail system.</para>
592 <indexterm zone="postfix postfix-bin">
593 <primary sortas="b-postfix">postfix</primary>
594 </indexterm>
595 </listitem>
596 </varlistentry>
597
598 <varlistentry id="postkick">
599 <term><command>postkick</command></term>
600 <listitem>
601 <para>Sends requests to the specified service over a
602 local transport channel.</para>
603 <indexterm zone="postfix postkick">
604 <primary sortas="b-postkick">postkick</primary>
605 </indexterm>
606 </listitem>
607 </varlistentry>
608
609 <varlistentry id="postlock">
610 <term><command>postlock</command></term>
611 <listitem>
612 <para>Locks a mail folder for exclusive use, and executes
613 commands passed to it.</para>
614 <indexterm zone="postfix postlock">
615 <primary sortas="b-postlock">postlock</primary>
616 </indexterm>
617 </listitem>
618 </varlistentry>
619
620 <varlistentry id="postlog">
621 <term><command>postlog</command></term>
622 <listitem>
623 <para>A <application>Postfix</application>-compatible logging
624 interface for use in, for example, shell scripts.</para>
625 <indexterm zone="postfix postlog">
626 <primary sortas="b-postlog">postlog</primary>
627 </indexterm>
628 </listitem>
629 </varlistentry>
630
631 <varlistentry id="postmap">
632 <term><command>postmap</command></term>
633 <listitem>
634 <para>Creates or queries one or more Postfix lookup
635 tables, or updates an existing one.</para>
636 <indexterm zone="postfix postmap">
637 <primary sortas="b-postmap">postmap</primary>
638 </indexterm>
639 </listitem>
640 </varlistentry>
641
642 <varlistentry id="postqueue">
643 <term><command>postqueue</command></term>
644 <listitem>
645 <para>The <application>Postfix</application> user interface for
646 queue management.</para>
647 <indexterm zone="postfix postqueue">
648 <primary sortas="b-postqueue">postqueue</primary>
649 </indexterm>
650 </listitem>
651 </varlistentry>
652
653 <varlistentry id="postsuper">
654 <term><command>postsuper</command></term>
655 <listitem>
656 <para>The <application>Postfix</application> user interface for
657 superuser queue management.</para>
658 <indexterm zone="postfix postsuper">
659 <primary sortas="b-postsuper">postsuper</primary>
660 </indexterm>
661 </listitem>
662 </varlistentry>
663
664 <varlistentry id="proxymap">
665 <term><command>proxymap</command></term>
666 <listitem>
667 <para>Provides read-only table lookup services to other
668 <application>Postfix</application> processes.</para>
669 <indexterm zone="postfix proxymap">
670 <primary sortas="b-proxymap">proxymap</primary>
671 </indexterm>
672 </listitem>
673 </varlistentry>
674
675 <varlistentry id="qmgr">
676 <term><command>qmgr</command></term>
677 <listitem>
678 <para>A daemon that awaits the arrival of incoming mail and
679 arranges for its delivery.</para>
680 <indexterm zone="postfix qmgr">
681 <primary sortas="b-qmgr">qmgr</primary>
682 </indexterm>
683 </listitem>
684 </varlistentry>
685
686 <varlistentry id="qmqpd">
687 <term><command>qmqpd</command></term>
688 <listitem>
689 <para>A daemon that receives one message per connection, and
690 pipes it through the <application>cleanup</application> daemon, and
691 places it into the incoming queue.</para>
692 <indexterm zone="postfix qmqpd">
693 <primary sortas="b-qmqpd">qmqpd</primary>
694 </indexterm>
695 </listitem>
696 </varlistentry>
697
698 <varlistentry id="scache">
699 <term><command>scache</command></term>
700 <listitem>
701 <para>Maintains a connection cache used for sharing a connection
702 multiple times.</para>
703 <indexterm zone="postfix scache">
704 <primary sortas="b-scache">scache</primary>
705 </indexterm>
706 </listitem>
707 </varlistentry>
708
709 <varlistentry id="sendmail-postfix">
710 <term><command>sendmail</command></term>
711 <listitem>
712 <para>The <application>Postfix</application> to
713 <application>Sendmail</application> compatibility interface.</para>
714 <indexterm zone="postfix sendmail-postfix">
715 <primary sortas="b-sendmail">sendmail</primary>
716 </indexterm>
717 </listitem>
718 </varlistentry>
719
720 <varlistentry id="showq">
721 <term><command>showq</command></term>
722 <listitem>
723 <para>A daemon that reports the Postfix mail queue status.</para>
724 <indexterm zone="postfix showq">
725 <primary sortas="b-showq">showq</primary>
726 </indexterm>
727 </listitem>
728 </varlistentry>
729
730 <varlistentry id="smtp">
731 <term><command>smtp</command></term>
732 <listitem>
733 <para>Looks up a list of mail exchanger addresses for the
734 destination host, sorts the list by preference, and connects to
735 each listed address until it finds a server that responds.</para>
736 <indexterm zone="postfix smtp">
737 <primary sortas="b-smtp">smtp</primary>
738 </indexterm>
739 </listitem>
740 </varlistentry>
741
742 <varlistentry id="smtpd">
743 <term><command>smtpd</command></term>
744 <listitem>
745 <para>Accepts network connection requests and performs zero
746 or more SMTP transactions per connection.</para>
747 <indexterm zone="postfix smtpd">
748 <primary sortas="b-smtpd">smtpd</primary>
749 </indexterm>
750 </listitem>
751 </varlistentry>
752
753 <varlistentry id="spawn">
754 <term><command>spawn</command></term>
755 <listitem>
756 <para>Listens on a port as specified in the
757 <application>Postfix</application> <filename>master.cf</filename> file
758 and spawns an external command whenever a connection is
759 established.</para>
760 <indexterm zone="postfix spawn">
761 <primary sortas="b-spawn">spawn</primary>
762 </indexterm>
763 </listitem>
764 </varlistentry>
765
766 <varlistentry id="tlsmgr">
767 <term><command>tlsmgr</command></term>
768 <listitem>
769 <para>Maintains the TLS session cache and acts as the PRNG
770 manager.</para>
771 <indexterm zone="postfix tlsmgr">
772 <primary sortas="b-tlsmgr">tlsmgr</primary>
773 </indexterm>
774 </listitem>
775 </varlistentry>
776
777 <varlistentry id="trivial-rewrite">
778 <term><command>trivial-rewrite</command></term>
779 <listitem>
780 <para>A daemon that rewrites addresses to standard form.</para>
781 <indexterm zone="postfix trivial-rewrite">
782 <primary sortas="b-trivial-rewrite">trivial-rewrite</primary>
783 </indexterm>
784 </listitem>
785 </varlistentry>
786
787 <varlistentry id="verify">
788 <term><command>verify</command></term>
789 <listitem>
790 <para>Maintains a record of what recipient addresses are known
791 to be deliverable or undeliverable.</para>
792 <indexterm zone="postfix verify">
793 <primary sortas="b-verify">verify</primary>
794 </indexterm>
795 </listitem>
796 </varlistentry>
797
798 <varlistentry id="virtual">
799 <term><command>virtual</command></term>
800 <listitem>
801 <para>Delivers mail to virtual user's mail directories.</para>
802 <indexterm zone="postfix virtual">
803 <primary sortas="b-virtual">virtual</primary>
804 </indexterm>
805 </listitem>
806 </varlistentry>
807
808 </variablelist>
809
810 </sect2>
811
812</sect1>
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