source: server/mail/postfix.xml@ 1e901a7

10.0 10.1 11.0 11.1 11.2 11.3 12.0 12.1 6.1 6.2 6.2.0 6.2.0-rc1 6.2.0-rc2 6.3 6.3-rc1 6.3-rc2 6.3-rc3 7.10 7.4 7.5 7.6 7.6-blfs 7.6-systemd 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 9.0 9.1 basic bdubbs/svn elogind gnome kde5-13430 kde5-14269 kde5-14686 kea ken/TL2024 ken/inkscape-core-mods ken/tuningfonts krejzi/svn lazarus lxqt nosym perl-modules plabs/newcss plabs/python-mods python3.11 qt5new rahul/power-profiles-daemon renodr/vulkan-addition systemd-11177 systemd-13485 trunk upgradedb xry111/intltool xry111/llvm18 xry111/soup3 xry111/test-20220226 xry111/xf86-video-removal
Last change on this file since 1e901a7 was 1e901a7, checked in by Randy McMurchy <randy@…>, 19 years ago

Adjusted long lines in the XML sources to fit on the PDF book pages

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3 "http://www.oasis-open.org/docbook/xml/4.4/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 "bcaa4aac80595d04c60c72844203a04d">
10 <!ENTITY postfix-size "1.9 MB">
11 <!ENTITY postfix-buildsize "81 MB">
12 <!ENTITY postfix-time "0.29 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 <bridgehead renderas="sect4">Required</bridgehead>
63 <para><xref linkend="db"/></para>
64
65 <bridgehead renderas="sect4">Optional</bridgehead>
66 <para><xref linkend="pcre"/>,
67 <xref linkend="mysql"/>,
68 <xref linkend="postgresql"/>,
69 <xref linkend="openldap"/>,
70 <xref linkend="openssl"/> and
71 <xref linkend="cyrus-sasl"/></para>
72
73 </sect2>
74
75 <sect2 role="installation">
76 <title>Installation of Postfix</title>
77
78 <sect3>
79 <title>Configuring the Build</title>
80
81 <para>The <application>Postfix</application> source tree does not contain
82 a <filename>configure</filename> script, rather the makefile in the
83 top-level directory contains a <option>makefiles</option> target that
84 regenerates all the other makefiles in the build tree. If you wish to
85 use additional software such as a database back-end for virtual users, or
86 TLS/SSL authentication, you will need to regenerate the makefiles using
87 one or more of the appropriate <envar>CCARGS</envar> and
88 <envar>AUXLIBS</envar> settings listed below.</para>
89
90 <para>Here is an example that combines the TLS/SSL and
91 <application>Cyrus-SASL</application> arguments:</para>
92
93<screen><userinput>make makefiles \
94CCARGS="-DHAS_SSL -DUSE_SASL_AUTH \
95-I/usr/include/openssl -I/usr/include/sasl" \
96AUXLIBS="-L/usr/lib -R/usr/lib -lssl -lcrypto -lsasl2"</userinput></screen>
97
98 <sect4>
99 <title>SSL/TLS Authentication</title>
100
101 <para>To use SSL/TLS authentication with
102 <application>Postfix</application>, you will first need to apply a
103 patch availible from <ulink
104 url="ftp://ftp.aet.tu-cottbus.de/pub/postfix_tls/pfixtls-0.8.18-2.1.3-0.9.7d.tar.gz"/>.
105 Unzip the patch tarball, and apply it with the following commands:</para>
106
107<screen><userinput>patch -p1 &lt; ../pfixtls-0.8.18-2.1.3-0.9.7d/pfixtls.diff</userinput></screen>
108
109 <para>You will need to pass the following values to the
110 <command>make makefiles</command> command:</para>
111
112<screen><literal>CCARGS="-DHAS_SSL -I/usr/include/openssl" \
113AUXLIBS="-L/usr/lib -lssl -lcrypto"</literal></screen>
114
115 <para>To use SSL or TLS you will also need
116 <xref linkend="cyrus-sasl"/>.</para>
117
118 </sect4>
119
120 <sect4>
121 <title>Cyrus-SASL</title>
122
123 <para>To use <application>Cyrus-SASL</application> with
124 <application>Postfix</application>, use the following arguments:</para>
125
126<screen><literal>CCARGS="-DUSE_SASL_AUTH -I/usr/include/sasl" \
127AUXLIBS="-L/usr/lib -R/usr/lib -lsasl2"</literal></screen>
128
129 </sect4>
130
131 <sect4>
132 <title>OpenLDAP</title>
133
134 <para>To use <application>OpenLDAP</application> with
135 <application>Postfix</application>, use the following
136 arguments:</para>
137
138<screen><literal>CCARGS="-I/usr/include -DHAS_LDAP" \
139AUXLIBS="-L/usr/lib -lldap -llber"</literal></screen>
140
141 </sect4>
142
143 <sect4>
144 <title>MySQL</title>
145
146 <para>To use <application>MySQL</application> with
147 <application>Postfix</application>, use the following
148 arguments:</para>
149
150<screen><literal>CCARGS="-DHAS_MYSQL -I/usr/include/mysql" \
151AUXLIBS="-L/usr/lib -lmysqlclient -lz -lm"</literal></screen>
152
153 </sect4>
154
155 <sect4>
156 <title>PostgreSQL</title>
157
158 <para>To use <application>PostgreSQL</application> with
159 <application>Postfix</application>, use the following
160 arguments:</para>
161
162<screen><literal>CCARGS="-DHAS_PGSQL -I/usr/include/postgresql" \
163AUXLIBS="-L/usr/lib -lpq -lz -lm"</literal></screen>
164
165 </sect4>
166
167 </sect3>
168
169 <sect3>
170 <title>Installing Postfix</title>
171
172 <para>Before you compile the program, you need to create users and groups
173 that will be expected to be in place when the install script executes.
174 Add the users and groups with the following commands:</para>
175
176<screen role="root"><userinput>groupadd postfix &amp;&amp;
177groupadd postdrop &amp;&amp;
178groupadd -g 65534 nogroup &amp;&amp;
179useradd -c postfix -d /dev/null -g postfix -s /bin/false postfix &amp;&amp;
180useradd -c nobody -d /home -g nogroup -s /bin/bash -u 65534 nobody &amp;&amp;
181chown postfix:postfix /var/mail</userinput></screen>
182
183 <para>Install <application>Postfix</application> by running the
184 following commands:</para>
185
186<screen role="root"><userinput>make &amp;&amp;
187sh postfix-install daemon_directory=/usr/sbin \
188 manpage_directory=/usr/share/man \
189 sample_directory=/usr/share/doc/postfix \
190 -non-interactive</userinput></screen>
191
192 <para>The final installation step is to install the program's documentation
193 with the following commands:</para>
194
195<screen role="root"><userinput>install -v -d /usr/share/doc/postfix &amp;&amp;
196cp -v -rf html/* /usr/share/doc/postfix</userinput></screen>
197
198 </sect3>
199
200 </sect2>
201
202 <sect2 role="commands">
203 <title>Command Explanations</title>
204
205 <para><command>sh postfix-install ... -non-interactive</command> : This
206 keeps the install script from asking any questions, thereby accepting
207 default destination directories in all but the three cases explicitly
208 mentioned.</para>
209
210 <para><command>make makefiles</command>: This command rebuilds the
211 makefiles throughout the source tree to use the options contained in the
212 <envar>CCARGS</envar> and <envar>AUXLIBS</envar> variables.</para>
213
214 </sect2>
215
216 <sect2 role="configuration">
217 <title>Configuring Postfix</title>
218
219 <sect3 id="postfix-config">
220 <title>Config Files</title>
221
222 <para><filename>/etc/aliases</filename>,
223 <filename>/etc/postfix/main.cf</filename>, and
224 <filename>/etc/postfix/master.cf</filename></para>
225
226 <indexterm zone="postfix postfix-config">
227 <primary sortas="e-etc-aliases">/etc/aliases</primary>
228 </indexterm>
229
230 <indexterm zone="postfix postfix-config">
231 <primary sortas="e-etc-postfix-star">/etc/postfix/*</primary>
232 </indexterm>
233
234 </sect3>
235
236 <sect3>
237 <title>Configuration Information</title>
238
239<screen role="root"><userinput>cat &gt;&gt; /etc/aliases &lt;&lt; "EOF"
240<literal># Begin /etc/aliases
241
242MAILER-DAEMON: postmaster
243postmaster: root
244
245root: LOGIN
246# End /etc/aliases</literal>
247EOF</userinput></screen>
248
249 <note>
250 <para>To protect an existing <filename>/etc/aliases</filename> file,
251 the above command appends these aliases to it if it exists. This file
252 should be checked and duplicate aliases removed, if present.</para>
253 </note>
254
255 <para>The <filename>/etc/aliases</filename> file that was just created
256 or appended, the <filename>main.cf</filename> and the
257 <filename>master.cf</filename> must be personalized for your system.
258 The <filename>aliases</filename> file needs your non-root login identity
259 so mail addressed to <systemitem class="username">root</systemitem> can
260 be forwarded to you at the user level. The <filename>main.cf</filename>
261 file needs your fully qualified hostname. All of these edits can be done
262 with <command>sed</command> commands entered into the console with
263 appropriate substitutions of your non-root login name for
264 <replaceable>[user]</replaceable> and your fully qualified hostname for
265 <replaceable>[localhost.localdomain]</replaceable>. You will find the
266 <filename>main.cf</filename> file is self documenting, so load it into
267 your editor to make the changes you need for your situation.</para>
268
269<screen role="root"><userinput>sed -i "s/LOGIN/<replaceable>[user]</replaceable>/" /etc/aliases &amp;&amp;
270sed -i "s/#myhostname = host.domain.tld/myhostname = \
271 <replaceable>[localhost.localdomain]</replaceable>/" /etc/postfix/main.cf &amp;&amp;
272/usr/bin/newaliases &amp;&amp;
273/usr/sbin/postfix start</userinput></screen>
274
275 </sect3>
276
277 <sect3 id="postfix-init">
278 <title>Boot Script</title>
279
280 <para>To automate the running of Postfix at startup, install the
281 <filename>/etc/rc.d/init.d/postfix</filename> init script included
282 in the <xref linkend="intro-important-bootscripts"/> package.</para>
283
284 <indexterm zone="postfix postfix-init">
285 <primary sortas="f-postfix">postfix</primary>
286 </indexterm>
287
288<screen role="root"><userinput>make install-postfix</userinput></screen>
289
290 </sect3>
291
292 </sect2>
293
294 <sect2 role="content">
295 <title>Contents</title>
296
297 <segmentedlist>
298 <segtitle>Installed Programs</segtitle>
299 <segtitle>Installed Libraries</segtitle>
300 <segtitle>Installed Directories</segtitle>
301
302 <seglistitem>
303 <seg>bounce, cleanup, error, flush, lmtp, local, mailq, master,
304 newaliases, nqmgr, oqmgr, pickup, pipe, postalias, postcat, postconf,
305 postdrop, postfix, postkick, postlock, postlog, postmap, postqueue,
306 postsuper, proxymap, qmgr, qmqpd, sendmail, showq, smtp, smtpd, spawn,
307 trivial-rewrite, verify, and virtual</seg>
308 <seg>None</seg>
309 <seg>/etc/postfix and /usr/share/doc/postfix</seg>
310 </seglistitem>
311 </segmentedlist>
312
313 <variablelist>
314 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
315 <?dbfo list-presentation="list"?>
316 <?dbhtml list-presentation="table"?>
317
318 <varlistentry id="bounce">
319 <term><command>bounce</command></term>
320 <listitem>
321 <para>A daemon that maintains per-message log files with
322 non-delivery status information.</para>
323 <indexterm zone="postfix bounce">
324 <primary sortas="b-bounce">bounce</primary>
325 </indexterm>
326 </listitem>
327 </varlistentry>
328
329 <varlistentry id="cleanup">
330 <term><command>cleanup</command></term>
331 <listitem>
332 <para>A daemon that processes inbound mail, inserts it into the
333 incoming mail queue, and informs the queue manager of its arrival.</para>
334 <indexterm zone="postfix cleanup">
335 <primary sortas="b-cleanup">cleanup</primary>
336 </indexterm>
337 </listitem>
338 </varlistentry>
339
340 <varlistentry id="error">
341 <term><command>error</command></term>
342 <listitem>
343 <para>A deamon that processes non-delivery requests from the
344 queue manager.</para>
345 <indexterm zone="postfix error">
346 <primary sortas="b-error">error</primary>
347 </indexterm>
348 </listitem>
349 </varlistentry>
350
351 <varlistentry id="flush">
352 <term><command>flush</command></term>
353 <listitem>
354 <para>A daemon that maintains a record of deferred mail by
355 destination.</para>
356 <indexterm zone="postfix flush">
357 <primary sortas="b-flush">flush</primary>
358 </indexterm>
359 </listitem>
360 </varlistentry>
361
362 <varlistentry id="lmtp">
363 <term><command>lmtp</command></term>
364 <listitem>
365 <para>A daemon that processes message delivery requests from the
366 queue manager.</para>
367 <indexterm zone="postfix lmtp">
368 <primary sortas="b-lmtp">lmtp</primary>
369 </indexterm>
370 </listitem>
371 </varlistentry>
372
373 <varlistentry id="local">
374 <term><command>local</command></term>
375 <listitem>
376 <para>A daemon that processes delivery requests from the queue
377 manager to deliver mail to local recipients.</para>
378 <indexterm zone="postfix local">
379 <primary sortas="b-local">local</primary>
380 </indexterm>
381 </listitem>
382 </varlistentry>
383
384 <varlistentry id="mailq">
385 <term><command>mailq</command></term>
386 <listitem>
387 <para>A symlink to <filename>sendmail</filename>.</para>
388 <indexterm zone="postfix mailq">
389 <primary sortas="b-mailq">mailq</primary>
390 </indexterm>
391 </listitem>
392 </varlistentry>
393
394 <varlistentry id="master">
395 <term><command>master</command></term>
396 <listitem>
397 <para>The resident process that runs
398 <application>Postfix</application> daemons on demand.</para>
399 <indexterm zone="postfix master">
400 <primary sortas="b-master">master</primary>
401 </indexterm>
402 </listitem>
403 </varlistentry>
404
405 <varlistentry id="newaliases">
406 <term><command>newaliases</command></term>
407 <listitem>
408 <para>A symlink to <filename>sendmail</filename>.</para>
409 <indexterm zone="postfix newaliases">
410 <primary sortas="b-newaliases">newaliases</primary>
411 </indexterm>
412 </listitem>
413 </varlistentry>
414
415 <varlistentry id="nqmgr">
416 <term><command>nqmgr</command></term>
417 <listitem>
418 <para>A daemon that awaits the arrival of incoming mail and
419 arranges for its delivery.</para>
420 <indexterm zone="postfix nqmgr">
421 <primary sortas="b-nqmgr">nqmgr</primary>
422 </indexterm>
423 </listitem>
424 </varlistentry>
425
426 <varlistentry id="oqmgr">
427 <term><command>oqmgr</command></term>
428 <listitem>
429 <para>The old style queue manager. This will be removed soon.</para>
430 <indexterm zone="postfix oqmgr">
431 <primary sortas="b-oqmgr">oqmgr</primary>
432 </indexterm>
433 </listitem>
434 </varlistentry>
435
436 <varlistentry id="pickup">
437 <term><command>pickup</command></term>
438 <listitem>
439 <para>A daemon that waits for hints that new mail has been
440 dropped into the maildrop directory, and feeds it into the
441 <application>cleanup</application> daemon.</para>
442 <indexterm zone="postfix pickup">
443 <primary sortas="b-pickup">pickup</primary>
444 </indexterm>
445 </listitem>
446 </varlistentry>
447
448 <varlistentry id="pipe">
449 <term><command>pipe</command></term>
450 <listitem>
451 <para>A daemon that processes requests from the queue
452 manager to deliver messages to external commands.</para>
453 <indexterm zone="postfix pipe">
454 <primary sortas="b-pipe">pipe</primary>
455 </indexterm>
456 </listitem>
457 </varlistentry>
458
459 <varlistentry id="postalias">
460 <term><command>postalias</command></term>
461 <listitem>
462 <para>Creates or queries one or more
463 <application>Postfix</application> alias databases, or updates an
464 existing one.</para>
465 <indexterm zone="postfix postalias">
466 <primary sortas="b-postalias">postalias</primary>
467 </indexterm>
468 </listitem>
469 </varlistentry>
470
471 <varlistentry id="postcat">
472 <term><command>postcat</command></term>
473 <listitem>
474 <para>Prints the contents of the
475 <application>named</application> files in human readable format.</para>
476 <indexterm zone="postfix postcat">
477 <primary sortas="b-postcat">postcat</primary>
478 </indexterm>
479 </listitem>
480 </varlistentry>
481
482 <varlistentry id="postconf">
483 <term><command>postconf</command></term>
484 <listitem>
485 <para>Displays or changes the value of
486 <application>Postfix</application> configuration parameters.</para>
487 <indexterm zone="postfix postconf">
488 <primary sortas="b-postconf">postconf</primary>
489 </indexterm>
490 </listitem>
491 </varlistentry>
492
493 <varlistentry id="postdrop">
494 <term><command>postdrop</command></term>
495 <listitem>
496 <para>Creates a file in the maildrop directory and copies
497 it's standard input to the file.</para>
498 <indexterm zone="postfix postdrop">
499 <primary sortas="b-postdrop">postdrop</primary>
500 </indexterm>
501 </listitem>
502 </varlistentry>
503
504 <varlistentry id="postfix-bin">
505 <term><command>postfix</command></term>
506 <listitem>
507 <para>Controls the operation of the
508 <application>Postfix</application> mail system.</para>
509 <indexterm zone="postfix postfix-bin">
510 <primary sortas="b-postfix">postfix</primary>
511 </indexterm>
512 </listitem>
513 </varlistentry>
514
515 <varlistentry id="postkick">
516 <term><command>postkick</command></term>
517 <listitem>
518 <para>Sends requests to the specified service over a
519 local transport channel.</para>
520 <indexterm zone="postfix postkick">
521 <primary sortas="b-postkick">postkick</primary>
522 </indexterm>
523 </listitem>
524 </varlistentry>
525
526 <varlistentry id="postlock">
527 <term><command>postlock</command></term>
528 <listitem>
529 <para>Locks a mail folder for exclusive use, and executes
530 commands passed to it.</para>
531 <indexterm zone="postfix postlock">
532 <primary sortas="b-postlock">postlock</primary>
533 </indexterm>
534 </listitem>
535 </varlistentry>
536
537 <varlistentry id="postlog">
538 <term><command>postlog</command></term>
539 <listitem>
540 <para>A <application>Postfix</application>-compatible logging
541 interface for use in, for example, shell scripts.</para>
542 <indexterm zone="postfix postlog">
543 <primary sortas="b-postlog">postlog</primary>
544 </indexterm>
545 </listitem>
546 </varlistentry>
547
548 <varlistentry id="postmap">
549 <term><command>postmap</command></term>
550 <listitem>
551 <para>Creates or queries one or more Postfix lookup
552 tables, or updates an existing one.</para>
553 <indexterm zone="postfix postmap">
554 <primary sortas="b-postmap">postmap</primary>
555 </indexterm>
556 </listitem>
557 </varlistentry>
558
559 <varlistentry id="postqueue">
560 <term><command>postqueue</command></term>
561 <listitem>
562 <para>The <application>Postfix</application> user interface for
563 queue management.</para>
564 <indexterm zone="postfix postqueue">
565 <primary sortas="b-postqueue">postqueue</primary>
566 </indexterm>
567 </listitem>
568 </varlistentry>
569
570 <varlistentry id="postsuper">
571 <term><command>postsuper</command></term>
572 <listitem>
573 <para>The <application>Postfix</application> user interface for
574 superuser queue management.</para>
575 <indexterm zone="postfix postsuper">
576 <primary sortas="b-postsuper">postsuper</primary>
577 </indexterm>
578 </listitem>
579 </varlistentry>
580
581 <varlistentry id="proxymap">
582 <term><command>proxymap</command></term>
583 <listitem>
584 <para>Provides read-only table lookup services to other
585 <application>Postfix</application> processes.</para>
586 <indexterm zone="postfix proxymap">
587 <primary sortas="b-proxymap">proxymap</primary>
588 </indexterm>
589 </listitem>
590 </varlistentry>
591
592 <varlistentry id="qmgr">
593 <term><command>qmgr</command></term>
594 <listitem>
595 <para>A daemon that awaits the arrival of incoming mail and
596 arranges for its delivery.</para>
597 <indexterm zone="postfix qmgr">
598 <primary sortas="b-qmgr">qmgr</primary>
599 </indexterm>
600 </listitem>
601 </varlistentry>
602
603 <varlistentry id="qmqpd">
604 <term><command>qmqpd</command></term>
605 <listitem>
606 <para>A daemon that receives one message per connection, and
607 pipes it through the <application>cleanup</application> daemon, and
608 places it into the incoming queue.</para>
609 <indexterm zone="postfix qmqpd">
610 <primary sortas="b-qmqpd">qmqpd</primary>
611 </indexterm>
612 </listitem>
613 </varlistentry>
614
615 <varlistentry id="sendmail-postfix">
616 <term><command>sendmail</command></term>
617 <listitem>
618 <para>The <application>Postfix</application> to
619 <application>Sendmail</application> compatibility interface.</para>
620 <indexterm zone="postfix sendmail-postfix">
621 <primary sortas="b-sendmail">sendmail</primary>
622 </indexterm>
623 </listitem>
624 </varlistentry>
625
626 <varlistentry id="showq">
627 <term><command>showq</command></term>
628 <listitem>
629 <para>A daemon that reports the Postfix mail queue status.</para>
630 <indexterm zone="postfix showq">
631 <primary sortas="b-showq">showq</primary>
632 </indexterm>
633 </listitem>
634 </varlistentry>
635
636 <varlistentry id="smtp">
637 <term><command>smtp</command></term>
638 <listitem>
639 <para>Looks up a list of mail exchanger addresses for the
640 destination host, sorts the list by preference, and connects to
641 each listed address until it finds a server that responds.</para>
642 <indexterm zone="postfix smtp">
643 <primary sortas="b-smtp">smtp</primary>
644 </indexterm>
645 </listitem>
646 </varlistentry>
647
648 <varlistentry id="smtpd">
649 <term><command>smtpd</command></term>
650 <listitem>
651 <para>Accepts network connection requests and performs zero
652 or more SMTP transactions per connection.</para>
653 <indexterm zone="postfix smtpd">
654 <primary sortas="b-smtpd">smtpd</primary>
655 </indexterm>
656 </listitem>
657 </varlistentry>
658
659 <varlistentry id="spawn">
660 <term><command>spawn</command></term>
661 <listitem>
662 <para>Listens on a port as specified in the
663 <application>Postfix</application> <filename>master.cf</filename> file
664 and spawns an external command whenever a connection is
665 established.</para>
666 <indexterm zone="postfix spawn">
667 <primary sortas="b-spawn">spawn</primary>
668 </indexterm>
669 </listitem>
670 </varlistentry>
671
672 <varlistentry id="trivial-rewrite">
673 <term><command>trivial-rewrite</command></term>
674 <listitem>
675 <para>A daemon that rewrites addresses to standard form.</para>
676 <indexterm zone="postfix trivial-rewrite">
677 <primary sortas="b-trivial-rewrite">trivial-rewrite</primary>
678 </indexterm>
679 </listitem>
680 </varlistentry>
681
682 <varlistentry id="verify">
683 <term><command>verify</command></term>
684 <listitem>
685 <para>Maintains a record of what recipient addresses are known
686 to be deliverable or undeliverable.</para>
687 <indexterm zone="postfix verify">
688 <primary sortas="b-verify">verify</primary>
689 </indexterm>
690 </listitem>
691 </varlistentry>
692
693 <varlistentry id="virtual">
694 <term><command>virtual</command></term>
695 <listitem>
696 <para>Delivers mail to virtual user's mail directories.</para>
697 <indexterm zone="postfix virtual">
698 <primary sortas="b-virtual">virtual</primary>
699 </indexterm>
700 </listitem>
701 </varlistentry>
702
703 </variablelist>
704
705 </sect2>
706
707</sect1>
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