{
    "mode": "man",
    "parameter": "discard",
    "section": "8postfix",
    "url": "https://www.chedong.com/phpMan.php/man/discard/8postfix/json",
    "generated": "2026-05-30T07:08:59Z",
    "synopsis": "discard [generic Postfix daemon options]",
    "sections": {
        "NAME": {
            "content": "discard - Postfix discard mail delivery agent\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "discard [generic Postfix daemon options]\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "The  Postfix  discard(8)  delivery  agent processes delivery requests from the queue manager.\nEach request specifies a queue file, a sender address, a next-hop destination that is treated\nas the reason for discarding the mail, and recipient information.  The reason may be prefixed\nwith an RFC 3463-compatible detail code.  This program expects to be run from  the  master(8)\nprocess manager.\n\nThe  discard(8)  delivery  agent  pretends to deliver all recipients in the delivery request,\nlogs the \"next-hop\" destination as the reason for discarding  the  mail,  updates  the  queue\nfile,  and  either  marks  recipients  as finished or informs the queue manager that delivery\nshould be tried again at a later time.\n\nDelivery status reports are sent to the trace(8) daemon as appropriate.\n",
            "subsections": []
        },
        "SECURITY": {
            "content": "The discard(8) mailer is not security-sensitive. It does not talk to the network, and can  be\nrun chrooted at fixed low privilege.\n",
            "subsections": []
        },
        "STANDARDS": {
            "content": "RFC 3463 (Enhanced Status Codes)\n",
            "subsections": []
        },
        "DIAGNOSTICS": {
            "content": "Problems and transactions are logged to syslogd(8) or postlogd(8).\n\nDepending  on  the  setting  of  the  notifyclasses parameter, the postmaster is notified of\nbounces and of other trouble.\n",
            "subsections": []
        },
        "CONFIGURATION PARAMETERS": {
            "content": "Changes to main.cf are picked up automatically as discard(8) processes run for only a limited\namount of time. Use the command \"postfix reload\" to speed up a change.\n\nThe  text below provides only a parameter summary. See postconf(5) for more details including\nexamples.\n\nconfigdirectory (see 'postconf -d' output)\nThe default location of the Postfix main.cf and master.cf configuration files.\n\ndaemontimeout (18000s)\nHow much time a Postfix daemon process may take to handle a request before it is  ter‐\nminated by a built-in watchdog timer.\n\ndelayloggingresolutionlimit (2)\nThe  maximal  number  of  digits after the decimal point when logging sub-second delay\nvalues.\n\ndoublebouncesender (double-bounce)\nThe sender address of postmaster notifications that are generated by the mail system.\n\nipctimeout (3600s)\nThe time limit for sending or receiving information  over  an  internal  communication\nchannel.\n\nmaxidle (100s)\nThe  maximum  amount of time that an idle Postfix daemon process waits for an incoming\nconnection before terminating voluntarily.\n\nmaxuse (100)\nThe maximal number of incoming connections that a Postfix daemon process will  service\nbefore terminating voluntarily.\n\nprocessid (read-only)\nThe process ID of a Postfix command or daemon process.\n\nprocessname (read-only)\nThe process name of a Postfix command or daemon process.\n\nqueuedirectory (see 'postconf -d' output)\nThe location of the Postfix top-level queue directory.\n\nsyslogfacility (mail)\nThe syslog facility of Postfix logging.\n\nsyslogname (see 'postconf -d' output)\nA  prefix  that is prepended to the process name in syslog records, so that, for exam‐\nple, \"smtpd\" becomes \"prefix/smtpd\".\n\nAvailable in Postfix 3.3 and later:\n\nservicename (read-only)\nThe master.cf service name of a Postfix daemon process.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "qmgr(8), queue manager\nbounce(8), delivery status reports\nerror(8), Postfix error delivery agent\npostconf(5), configuration parameters\nmaster(5), generic daemon options\nmaster(8), process manager\npostlogd(8), Postfix logging\nsyslogd(8), system logging\n",
            "subsections": []
        },
        "LICENSE": {
            "content": "The Secure Mailer license must be distributed with this software.\n",
            "subsections": []
        },
        "HISTORY": {
            "content": "This service was introduced with Postfix version 2.2.\n\nAUTHOR(S)\nVictor Duchovni\nMorgan Stanley\n\nBased on code by:\nWietse Venema\nIBM T.J. Watson Research\nP.O. Box 704\nYorktown Heights, NY 10598, USA\n\nWietse Venema\nGoogle, Inc.\n111 8th Avenue\nNew York, NY 10011, USA\n\n\n\nDISCARD(8postfix)",
            "subsections": []
        }
    },
    "summary": "discard - Postfix discard mail delivery agent",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "qmgr",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/qmgr/8/json"
        },
        {
            "name": "bounce",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/bounce/8/json"
        },
        {
            "name": "error",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/error/8/json"
        },
        {
            "name": "postconf",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/postconf/5/json"
        },
        {
            "name": "master",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/master/5/json"
        },
        {
            "name": "master",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/master/8/json"
        },
        {
            "name": "postlogd",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/postlogd/8/json"
        },
        {
            "name": "syslogd",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/syslogd/8/json"
        }
    ]
}