1<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3<html> <head> 4<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 5<title> Postfix manual - sendmail(1) </title> 6</head> <body> <pre> 7SENDMAIL(1) SENDMAIL(1) 8 9<b>NAME</b> 10 sendmail - Postfix to Sendmail compatibility interface 11 12<b>SYNOPSIS</b> 13 <b>sendmail</b> [<i>option ...</i>] [<i>recipient ...</i>] 14 15 <b>mailq</b> 16 <b>sendmail -bp</b> 17 18 <b>newaliases</b> 19 <b>sendmail -I</b> 20 21<b>DESCRIPTION</b> 22 The Postfix <a href="sendmail.1.html"><b>sendmail</b>(1)</a> command implements the Postfix to Sendmail com- 23 patibility interface. For the sake of compatibility with existing 24 applications, some Sendmail command-line options are recognized but 25 silently ignored. 26 27 By default, Postfix <a href="sendmail.1.html"><b>sendmail</b>(1)</a> reads a message from standard input 28 until EOF or until it reads a line with only a <b>.</b> character, and 29 arranges for delivery. Postfix <a href="sendmail.1.html"><b>sendmail</b>(1)</a> relies on the <a href="postdrop.1.html"><b>postdrop</b>(1)</a> 30 command to create a queue file in the <b>maildrop</b> directory. 31 32 Specific command aliases are provided for other common modes of opera- 33 tion: 34 35 <b>mailq</b> List the mail queue. Each entry shows the queue file ID, message 36 size, arrival time, sender, and the recipients that still need 37 to be delivered. If mail could not be delivered upon the last 38 attempt, the reason for failure is shown. The queue ID string is 39 followed by an optional status character: 40 41 <b>*</b> The message is in the <b>active</b> queue, i.e. the message is 42 selected for delivery. 43 44 <b>!</b> The message is in the <b>hold</b> queue, i.e. no further deliv- 45 ery attempt will be made until the mail is taken off 46 hold. 47 48 <b>#</b> The message is forced to expire. See the <a href="postsuper.1.html"><b>postsuper</b>(1)</a> 49 options <b>-e</b> or <b>-f</b>. 50 51 This mode of operation is implemented by executing the 52 <a href="postqueue.1.html"><b>postqueue</b>(1)</a> command. 53 54 <b>newaliases</b> 55 Initialize the alias database. If no input file is specified 56 (with the <b>-oA</b> option, see below), the program processes the 57 file(s) specified with the <b><a href="postconf.5.html#alias_database">alias_database</a></b> configuration parame- 58 ter. If no alias database type is specified, the program uses 59 the type specified with the <b><a href="postconf.5.html#default_database_type">default_database_type</a></b> configuration 60 parameter. This mode of operation is implemented by running the 61 <a href="postalias.1.html"><b>postalias</b>(1)</a> command. 62 63 Note: it may take a minute or so before an alias database update 64 becomes visible. Use the "<b>postfix reload</b>" command to eliminate 65 this delay. 66 67 These and other features can be selected by specifying the appropriate 68 combination of command-line options. Some features are controlled by 69 parameters in the <a href="postconf.5.html"><b>main.cf</b></a> configuration file. 70 71 The following options are recognized: 72 73 <b>-Am</b> (ignored) 74 75 <b>-Ac</b> (ignored) 76 Postfix sendmail uses the same configuration file regardless of 77 whether or not a message is an initial submission. 78 79 <b>-B</b> <i>body</i><b>_</b><i>type</i> 80 The message body MIME type: <b>7BIT</b> or <b>8BITMIME</b>. 81 82 <b>-bd</b> Go into daemon mode. This mode of operation is implemented by 83 executing the "<b>postfix start</b>" command. 84 85 <b>-bh</b> (ignored) 86 87 <b>-bH</b> (ignored) 88 Postfix has no persistent host status database. 89 90 <b>-bi</b> Initialize alias database. See the <b>newaliases</b> command above. 91 92 <b>-bl</b> Go into daemon mode. To accept only local connections as with 93 Sendmail's <b>-bl</b> option, specify "<b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a> = loopback</b>" in 94 the Postfix <a href="postconf.5.html"><b>main.cf</b></a> configuration file. 95 96 <b>-bm</b> Read mail from standard input and arrange for delivery. This is 97 the default mode of operation. 98 99 <b>-bp</b> List the mail queue. See the <b>mailq</b> command above. 100 101 <b>-bs</b> Stand-alone SMTP server mode. Read SMTP commands from standard 102 input, and write responses to standard output. In stand-alone 103 SMTP server mode, mail relaying and other access controls are 104 disabled by default. To enable them, run the process as the 105 <b><a href="postconf.5.html#mail_owner">mail_owner</a></b> user. 106 107 This mode of operation is implemented by running the <a href="smtpd.8.html"><b>smtpd</b>(8)</a> 108 daemon. 109 110 <b>-bv</b> Do not collect or deliver a message. Instead, send an email 111 report after verifying each recipient address. This is useful 112 for testing address rewriting and routing configurations. 113 114 This feature is available in Postfix version 2.1 and later. 115 116 <b>-C</b> <i>config</i><b>_</b><i>file</i> 117 118 <b>-C</b> <i>config</i><b>_</b><i>dir</i> 119 The path name of the Postfix <a href="postconf.5.html"><b>main.cf</b></a> file, or of its parent 120 directory. This information is ignored with Postfix versions 121 before 2.3. 122 123 With Postfix version 3.2 and later, a non-default directory must 124 be authorized in the default <a href="postconf.5.html"><b>main.cf</b></a> file, through the alter- 125 nate_config_directories or <a href="postconf.5.html#multi_instance_directories">multi_instance_directories</a> parame- 126 ters. 127 128 With all Postfix versions, you can specify a directory pathname 129 with the MAIL_CONFIG environment variable to override the loca- 130 tion of configuration files. 131 132 <b>-F</b> <i>full</i><b>_</b><i>name</i> 133 Set the sender full name. This overrides the NAME environment 134 variable, and is used only with messages that have no <b>From:</b> mes- 135 sage header. 136 137 <b>-f</b> <i>sender</i> 138 Set the envelope sender address. This is the address where 139 delivery problems are sent to. With Postfix versions before 2.1, 140 the <b>Errors-To:</b> message header overrides the error return 141 address. 142 143 <b>-G</b> Gateway (relay) submission, as opposed to initial user submis- 144 sion. Either do not rewrite addresses at all, or update incom- 145 plete addresses with the domain information specified with 146 <b><a href="postconf.5.html#remote_header_rewrite_domain">remote_header_rewrite_domain</a></b>. 147 148 This option is ignored before Postfix version 2.3. 149 150 <b>-h</b> <i>hop</i><b>_</b><i>count</i> (ignored) 151 Hop count limit. Use the <b><a href="postconf.5.html#hopcount_limit">hopcount_limit</a></b> configuration parameter 152 instead. 153 154 <b>-I</b> Initialize alias database. See the <b>newaliases</b> command above. 155 156 <b>-i</b> When reading a message from standard input, don't treat a line 157 with only a <b>.</b> character as the end of input. 158 159 <b>-L</b> <i>label</i> (ignored) 160 The logging label. Use the <b><a href="postconf.5.html#syslog_name">syslog_name</a></b> configuration parameter 161 instead. 162 163 <b>-m</b> (ignored) 164 Backwards compatibility. 165 166 <b>-N</b> <i>dsn</i> (default: 'delay, failure') 167 Delivery status notification control. Specify either a 168 comma-separated list with one or more of <b>failure</b> (send notifica- 169 tion when delivery fails), <b>delay</b> (send notification when deliv- 170 ery is delayed), or <b>success</b> (send notification when the message 171 is delivered); or specify <b>never</b> (don't send any notifications at 172 all). 173 174 This feature is available in Postfix 2.3 and later. 175 176 <b>-n</b> (ignored) 177 Backwards compatibility. 178 179 <b>-oA</b><i>alias</i><b>_</b><i>database</i> 180 Non-default alias database. Specify <i>pathname</i> or <i>type</i>:<i>pathname</i>. 181 See <a href="postalias.1.html"><b>postalias</b>(1)</a> for details. 182 183 <b>-O</b> <i>option=value</i> (ignored) 184 Set the named <i>option</i> to <i>value</i>. Use the equivalent configuration 185 parameter in <a href="postconf.5.html"><b>main.cf</b></a> instead. 186 187 <b>-o7</b> (ignored) 188 189 <b>-o8</b> (ignored) 190 To send 8-bit or binary content, use an appropriate MIME encap- 191 sulation and specify the appropriate <b>-B</b> command-line option. 192 193 <b>-oi</b> When reading a message from standard input, don't treat a line 194 with only a <b>.</b> character as the end of input. 195 196 <b>-om</b> (ignored) 197 The sender is never eliminated from alias etc. expansions. 198 199 <b>-o</b> <i>x value</i> (ignored) 200 Set option <i>x</i> to <i>value</i>. Use the equivalent configuration parame- 201 ter in <a href="postconf.5.html"><b>main.cf</b></a> instead. 202 203 <b>-r</b> <i>sender</i> 204 Set the envelope sender address. This is the address where 205 delivery problems are sent to. With Postfix versions before 2.1, 206 the <b>Errors-To:</b> message header overrides the error return 207 address. 208 209 <b>-R</b> <i>return</i> 210 Delivery status notification control. Specify "hdrs" to return 211 only the header when a message bounces, "full" to return a full 212 copy (the default behavior). 213 214 The <b>-R</b> option specifies an upper bound; Postfix will return only 215 the header, when a full copy would exceed the <a href="postconf.5.html#bounce_size_limit">bounce_size_limit</a> 216 setting. 217 218 This option is ignored before Postfix version 2.10. 219 220 <b>-q</b> Attempt to deliver all queued mail. This is implemented by exe- 221 cuting the <a href="postqueue.1.html"><b>postqueue</b>(1)</a> command. 222 223 Warning: flushing undeliverable mail frequently will result in 224 poor delivery performance of all other mail. 225 226 <b>-q</b><i>interval</i> (ignored) 227 The interval between queue runs. Use the <b><a href="postconf.5.html#queue_run_delay">queue_run_delay</a></b> config- 228 uration parameter instead. 229 230 <b>-qI</b><i>queueid</i> 231 Schedule immediate delivery of mail with the specified queue ID. 232 This option is implemented by executing the <a href="postqueue.1.html"><b>postqueue</b>(1)</a> com- 233 mand, and is available with Postfix version 2.4 and later. 234 235 <b>-qR</b><i>site</i> 236 Schedule immediate delivery of all mail that is queued for the 237 named <i>site</i>. This option accepts only <i>site</i> names that are eligi- 238 ble for the "fast flush" service, and is implemented by execut- 239 ing the <a href="postqueue.1.html"><b>postqueue</b>(1)</a> command. See <a href="flush.8.html"><b>flush</b>(8)</a> for more information 240 about the "fast flush" service. 241 242 <b>-qS</b><i>site</i> 243 This command is not implemented. Use the slower "<b>sendmail -q</b>" 244 command instead. 245 246 <b>-t</b> Extract recipients from message headers. These are added to any 247 recipients specified on the command line. 248 249 With Postfix versions prior to 2.1, this option requires that no 250 recipient addresses are specified on the command line. 251 252 <b>-U</b> (ignored) 253 Initial user submission. 254 255 <b>-V</b> <i>envid</i> 256 Specify the envelope ID for notification by servers that support 257 DSN. 258 259 This feature is available in Postfix 2.3 and later. 260 261 <b>-XV</b> (Postfix 2.2 and earlier: <b>-V</b>) 262 Variable Envelope Return Path. Given an envelope sender address 263 of the form <i>owner-listname</i>@<i>origin</i>, each recipient <i>user</i>@<i>domain</i> 264 receives mail with a personalized envelope sender address. 265 266 By default, the personalized envelope sender address is 267 <i>owner-listname</i><b>+</b><i>user</i><b>=</b><i>domain</i>@<i>origin</i>. The default <b>+</b> and <b>=</b> charac- 268 ters are configurable with the <b><a href="postconf.5.html#default_verp_delimiters">default_verp_delimiters</a></b> configu- 269 ration parameter. 270 271 <b>-XV</b><i>xy</i> (Postfix 2.2 and earlier: <b>-V</b><i>xy</i>) 272 As <b>-XV</b>, but uses <i>x</i> and <i>y</i> as the VERP delimiter characters, 273 instead of the characters specified with the <b><a href="postconf.5.html#default_verp_delimiters">default_verp_delim</a>-</b> 274 <b><a href="postconf.5.html#default_verp_delimiters">iters</a></b> configuration parameter. 275 276 <b>-v</b> Send an email report of the first delivery attempt (Postfix ver- 277 sions 2.1 and later). Mail delivery always happens in the back- 278 ground. When multiple <b>-v</b> options are given, enable verbose log- 279 ging for debugging purposes. 280 281 <b>-X</b> <i>log</i><b>_</b><i>file</i> (ignored) 282 Log mailer traffic. Use the <b><a href="postconf.5.html#debug_peer_list">debug_peer_list</a></b> and <b><a href="postconf.5.html#debug_peer_level">debug_peer_level</a></b> 283 configuration parameters instead. 284 285<b>SECURITY</b> 286 By design, this program is not set-user (or group) id. It is prepared 287 to handle message content from untrusted, possibly remote, users. 288 289 However, like most Postfix programs, this program does not enforce a 290 security policy on its command-line arguments. Instead, it relies on 291 the UNIX system to enforce access policies based on the effective user 292 and group IDs of the process. Concretely, this means that running Post- 293 fix commands as root (from sudo or equivalent) on behalf of a non-root 294 user is likely to create privilege escalation opportunities. 295 296 If an application runs any Postfix programs on behalf of users that do 297 not have normal shell access to Postfix commands, then that application 298 MUST restrict user-specified command-line arguments to avoid privilege 299 escalation. 300 301 <b>o</b> Filter all command-line arguments, for example arguments that 302 contain a pathname or that specify a database access method. 303 These pathname checks must reject user-controlled symlinks or 304 hardlinks to sensitive files, and must not be vulnerable to TOC- 305 TOU race attacks. 306 307 <b>o</b> Disable command options processing for all command arguments 308 that contain user-specified data. For example, the Postfix <a href="sendmail.1.html"><b>send-</b></a> 309 <a href="sendmail.1.html"><b>mail</b>(1)</a> command line MUST be structured as follows: 310 311 <b>/path/to/sendmail</b> <i>system-arguments</i> <b>--</b> <i>user-arguments</i> 312 313 Here, the "<b>--</b>" disables command option processing for all 314 <i>user-arguments</i> that follow. 315 316 Without the "<b>--</b>", a malicious user could enable Postfix <a href="sendmail.1.html"><b>send-</b></a> 317 <a href="sendmail.1.html"><b>mail</b>(1)</a> command options, by specifying an email address that 318 starts with "<b>-</b>". 319 320<b>DIAGNOSTICS</b> 321 Problems are logged to <b>syslogd</b>(8) or <a href="postlogd.8.html"><b>postlogd</b>(8)</a>, and to the standard 322 error stream. 323 324<b>ENVIRONMENT</b> 325 <b>MAIL_CONFIG</b> 326 Directory with Postfix configuration files. 327 328 <b>MAIL_VERBOSE</b> (value does not matter) 329 Enable verbose logging for debugging purposes. 330 331 <b>MAIL_DEBUG</b> (value does not matter) 332 Enable debugging with an external command, as specified with the 333 <b><a href="postconf.5.html#debugger_command">debugger_command</a></b> configuration parameter. 334 335 <b>NAME</b> The sender full name. This is used only with messages that have 336 no <b>From:</b> message header. See also the <b>-F</b> option above. 337 338<b>CONFIGURATION PARAMETERS</b> 339 The following <a href="postconf.5.html"><b>main.cf</b></a> parameters are especially relevant to this pro- 340 gram. The text below provides only a parameter summary. See <a href="postconf.5.html"><b>post-</b></a> 341 <a href="postconf.5.html"><b>conf</b>(5)</a> for more details including examples. 342 343<b>COMPATIBILITY CONTROLS</b> 344 Available with Postfix 2.9 and later: 345 346 <b><a href="postconf.5.html#sendmail_fix_line_endings">sendmail_fix_line_endings</a> (always)</b> 347 Controls how the Postfix sendmail command converts email message 348 line endings from <CR><LF> into UNIX format (<LF>). 349 350<b>TROUBLE SHOOTING CONTROLS</b> 351 The <a href="DEBUG_README.html">DEBUG_README</a> file gives examples of how to troubleshoot a Postfix 352 system. 353 354 <b><a href="postconf.5.html#debugger_command">debugger_command</a> (empty)</b> 355 The external command to execute when a Postfix daemon program is 356 invoked with the -D option. 357 358 <b><a href="postconf.5.html#debug_peer_level">debug_peer_level</a> (2)</b> 359 The increment in verbose logging level when a nexthop destina- 360 tion, remote client or server name or network address matches a 361 pattern given with the <a href="postconf.5.html#debug_peer_list">debug_peer_list</a> parameter. 362 363 <b><a href="postconf.5.html#debug_peer_list">debug_peer_list</a> (empty)</b> 364 Optional list of nexthop destination, remote client or server 365 name or network address patterns that, if matched, cause the 366 verbose logging level to increase by the amount specified in 367 $<a href="postconf.5.html#debug_peer_level">debug_peer_level</a>. 368 369<b>ACCESS CONTROLS</b> 370 Available in Postfix version 2.2 and later: 371 372 <b><a href="postconf.5.html#authorized_flush_users">authorized_flush_users</a> (<a href="DATABASE_README.html#types">static</a>:anyone)</b> 373 List of users who are authorized to flush the queue. 374 375 <b><a href="postconf.5.html#authorized_mailq_users">authorized_mailq_users</a> (<a href="DATABASE_README.html#types">static</a>:anyone)</b> 376 List of users who are authorized to view the queue. 377 378 <b><a href="postconf.5.html#authorized_submit_users">authorized_submit_users</a> (<a href="DATABASE_README.html#types">static</a>:anyone)</b> 379 List of users who are authorized to submit mail with the <a href="sendmail.1.html"><b>send-</b></a> 380 <a href="sendmail.1.html"><b>mail</b>(1)</a> command (and with the privileged <a href="postdrop.1.html"><b>postdrop</b>(1)</a> helper com- 381 mand). 382 383<b>RESOURCE AND RATE CONTROLS</b> 384 <b><a href="postconf.5.html#bounce_size_limit">bounce_size_limit</a> (50000)</b> 385 The maximal amount of original message text that is sent in a 386 non-delivery notification. 387 388 <b><a href="postconf.5.html#fork_attempts">fork_attempts</a> (5)</b> 389 The maximal number of attempts to fork() a child process. 390 391 <b><a href="postconf.5.html#fork_delay">fork_delay</a> (1s)</b> 392 The delay between attempts to fork() a child process. 393 394 <b><a href="postconf.5.html#hopcount_limit">hopcount_limit</a> (50)</b> 395 The maximal number of Received: message headers that is allowed 396 in the primary message headers. 397 398 <b><a href="postconf.5.html#queue_run_delay">queue_run_delay</a> (300s)</b> 399 The time between <a href="QSHAPE_README.html#deferred_queue">deferred queue</a> scans by the queue manager; 400 prior to Postfix 2.4 the default value was 1000s. 401 402<b>FAST FLUSH CONTROLS</b> 403 The <a href="ETRN_README.html">ETRN_README</a> file describes configuration and operation details for 404 the Postfix "fast flush" service. 405 406 <b><a href="postconf.5.html#fast_flush_domains">fast_flush_domains</a> ($<a href="postconf.5.html#relay_domains">relay_domains</a>)</b> 407 Optional list of destinations that are eligible for per-destina- 408 tion logfiles with mail that is queued to those destinations. 409 410<b>VERP CONTROLS</b> 411 The <a href="VERP_README.html">VERP_README</a> file describes configuration and operation details of 412 Postfix support for variable envelope return path addresses. 413 414 <b><a href="postconf.5.html#default_verp_delimiters">default_verp_delimiters</a> (+=)</b> 415 The two default VERP delimiter characters. 416 417 <b><a href="postconf.5.html#verp_delimiter_filter">verp_delimiter_filter</a> (-=+)</b> 418 The characters Postfix accepts as VERP delimiter characters on 419 the Postfix <a href="sendmail.1.html"><b>sendmail</b>(1)</a> command line and in SMTP commands. 420 421<b>MISCELLANEOUS CONTROLS</b> 422 <b><a href="postconf.5.html#alias_database">alias_database</a> (see 'postconf -d' output)</b> 423 The alias databases for <a href="local.8.html"><b>local</b>(8)</a> delivery that are updated with 424 "<b>newaliases</b>" or with "<b>sendmail -bi</b>". 425 426 <b><a href="postconf.5.html#command_directory">command_directory</a> (see 'postconf -d' output)</b> 427 The location of all postfix administrative commands. 428 429 <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b> 430 The default location of the Postfix <a href="postconf.5.html">main.cf</a> and <a href="master.5.html">master.cf</a> con- 431 figuration files. 432 433 <b><a href="postconf.5.html#daemon_directory">daemon_directory</a> (see 'postconf -d' output)</b> 434 The directory with Postfix support programs and daemon programs. 435 436 <b><a href="postconf.5.html#default_database_type">default_database_type</a> (see 'postconf -d' output)</b> 437 The default database type for use in <a href="newaliases.1.html"><b>newaliases</b>(1)</a>, <a href="postalias.1.html"><b>postalias</b>(1)</a> 438 and <a href="postmap.1.html"><b>postmap</b>(1)</a> commands. 439 440 <b><a href="postconf.5.html#delay_warning_time">delay_warning_time</a> (0h)</b> 441 The time after which the sender receives a copy of the message 442 headers of mail that is still queued. 443 444 <b><a href="postconf.5.html#import_environment">import_environment</a> (see 'postconf -d' output)</b> 445 The list of environment variables that a privileged Postfix 446 process will import from a non-Postfix parent process, or 447 name=value environment overrides. 448 449 <b><a href="postconf.5.html#mail_owner">mail_owner</a> (postfix)</b> 450 The UNIX system account that owns the Postfix queue and most 451 Postfix daemon processes. 452 453 <b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b> 454 The location of the Postfix top-level queue directory. 455 456 <b><a href="postconf.5.html#remote_header_rewrite_domain">remote_header_rewrite_domain</a> (empty)</b> 457 Don't rewrite message headers from remote clients at all when 458 this parameter is empty; otherwise, rewrite message headers and 459 append the specified domain name to incomplete addresses. 460 461 <b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b> 462 The syslog facility of Postfix logging. 463 464 <b><a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)</b> 465 A prefix that is prepended to the process name in syslog 466 records, so that, for example, "smtpd" becomes "prefix/smtpd". 467 468 Postfix 3.2 and later: 469 470 <b><a href="postconf.5.html#alternate_config_directories">alternate_config_directories</a> (empty)</b> 471 A list of non-default Postfix configuration directories that may 472 be specified with "-c <a href="postconf.5.html#config_directory">config_directory</a>" on the command line (in 473 the case of <a href="sendmail.1.html"><b>sendmail</b>(1)</a>, with the "-C" option), or via the 474 MAIL_CONFIG environment parameter. 475 476 <b><a href="postconf.5.html#multi_instance_directories">multi_instance_directories</a> (empty)</b> 477 An optional list of non-default Postfix configuration directo- 478 ries; these directories belong to additional Postfix instances 479 that share the Postfix executable files and documentation with 480 the default Postfix instance, and that are started, stopped, 481 etc., together with the default Postfix instance. 482 483<b>FILES</b> 484 /var/spool/postfix, mail queue 485 /etc/postfix, configuration files 486 487<b>SEE ALSO</b> 488 <a href="pickup.8.html">pickup(8)</a>, mail pickup daemon 489 <a href="qmgr.8.html">qmgr(8)</a>, queue manager 490 <a href="smtpd.8.html">smtpd(8)</a>, SMTP server 491 <a href="flush.8.html">flush(8)</a>, fast flush service 492 <a href="postsuper.1.html">postsuper(1)</a>, queue maintenance 493 <a href="postalias.1.html">postalias(1)</a>, create/update/query alias database 494 <a href="postdrop.1.html">postdrop(1)</a>, mail posting utility 495 <a href="postfix.1.html">postfix(1)</a>, mail system control 496 <a href="postqueue.1.html">postqueue(1)</a>, mail queue control 497 <a href="postlogd.8.html">postlogd(8)</a>, Postfix logging 498 syslogd(8), system logging 499 500<b>README_FILES</b> 501 Use "<b>postconf <a href="postconf.5.html#readme_directory">readme_directory</a></b>" or "<b>postconf <a href="postconf.5.html#html_directory">html_directory</a></b>" to locate 502 this information. 503 <a href="DEBUG_README.html">DEBUG_README</a>, Postfix debugging howto 504 <a href="ETRN_README.html">ETRN_README</a>, Postfix ETRN howto 505 <a href="VERP_README.html">VERP_README</a>, Postfix VERP howto 506 507<b>LICENSE</b> 508 The Secure Mailer license must be distributed with this software. 509 510<b>AUTHOR(S)</b> 511 Wietse Venema 512 IBM T.J. Watson Research 513 P.O. Box 704 514 Yorktown Heights, NY 10598, USA 515 516 Wietse Venema 517 Google, Inc. 518 111 8th Avenue 519 New York, NY 10011, USA 520 521 SENDMAIL(1) 522</pre> </body> </html> 523