1.\" 2.\" Copyright (c) 2008-2014, Simon Schubert <2@0x2c.org>. 3.\" Copyright (c) 2008 4.\" The DragonFly Project. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in 14.\" the documentation and/or other materials provided with the 15.\" distribution. 16.\" 3. Neither the name of The DragonFly Project nor the names of its 17.\" contributors may be used to endorse or promote products derived 18.\" from this software without specific, prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33.Dd February 13, 2014 34.Dt DMA 8 35.Os 36.Sh NAME 37.Nm dma 38.Nd DragonFly Mail Agent 39.Sh SYNOPSIS 40.Nm 41.Op Fl DiOt 42.Op Fl A Ns Ar mode 43.Op Fl b Ns Ar mode 44.Op Fl f Ar sender 45.Op Fl L Ar tag 46.Op Fl o Ns Ar option 47.Op Fl r Ar sender 48.Op Fl q Ns Op Ar arg 49.Op Ar recipient ... 50.Sh DESCRIPTION 51.Nm 52is a small Mail Transport Agent (MTA), designed for home and office use. 53It accepts mails from locally installed Mail User Agents (MUA) and 54delivers the mails either locally or to a remote destination. 55Remote delivery includes several features like TLS/SSL support and SMTP 56authentication. 57.Pp 58.Nm 59is not intended as a replacement for real, big MTAs like 60.Xr sendmail 8 61or 62.Xr postfix 1 . 63Consequently, 64.Nm 65does not listen on port 25 for incoming connections. 66.Pp 67The options are as follows: 68.Bl -tag -width indent 69.It Fl A Ns Ar mode 70.Fl \&Ac 71acts as a compatibility option for sendmail. 72.It Fl b Ns Ar mode 73.Bl -tag -width indent 74.It Fl bp 75List all mails currently stored in the mail queue. 76.It Fl bq 77Queue the mail, but don't attempt to deliver it. 78See also the 79.Sq DEFER 80config file setting below. 81.El 82.Pp 83All other 84.Ar mode Ns 85s are ignored. 86.It Fl D 87Don't run in the background. 88Useful for debugging. 89.It Fl f Ar sender 90Set sender address (envelope-from) to 91.Ar sender . 92This overrides the value of the environment variable 93.Ev EMAIL . 94.It Fl i 95Ignore dots alone on lines by themselves in incoming messages. 96This should be set if you are reading data from a file. 97.It Fl L Ar tag 98Set the identifier used in syslog messages to the supplied 99.Ar tag . 100This is a compatibility option for sendmail. 101.It Fl O 102This is a compatibility option for sendmail. 103.It Fl o Ns Ar option 104Specifying 105.Fl oi 106is synonymous to 107.Fl i . 108All other options are ignored. 109.It Fl q Ns Op Ar arg 110Process saved messages in the queue. 111The argument is optional and ignored. 112.It Fl r Ar sender 113Same as 114.Fl f . 115.It Fl t 116Obtain recipient addresses from the message header. 117.Nm 118will parse the 119.Li To: , 120.Li Cc: , 121and 122.Li Bcc: 123headers. 124The 125.Li Bcc: 126header will be removed independent of whether 127.Fl t 128is specified or not. 129.El 130.Sh CONFIGURATION 131.Nm 132can be configured with two config files: 133.Pp 134.Bl -bullet -compact 135.It 136auth.conf 137.It 138dma.conf 139.El 140.Pp 141These two files are stored per default in 142.Pa /etc/dma . 143.Sh FILE FORMAT 144Every file contains parameters of the form 145.Sq name value . 146Lines containing boolean values are set to 147.Sq NO 148if the line is commented and to 149.Sq YES 150if the line is uncommented. 151Empty lines or lines beginning with a 152.Sq # 153are ignored. 154Parameter names and their values are case sensitive. 155.Sh PARAMETERS 156.Ss auth.conf 157SMTP authentication can be configured in 158.Pa auth.conf . 159Each line has the format 160.Dq Li user|smarthost:password . 161.Ss dma.conf 162Most of the behaviour of 163.Nm 164can be configured in 165.Pa dma.conf . 166.Bl -tag -width 4n 167.It Ic SMARTHOST Xo 168(string, default=empty) 169.Xc 170If you want to send outgoing mails via a smarthost, set this variable to 171your smarthosts address. 172.It Ic PORT Xo 173(numeric, default=25) 174.Xc 175Use this port to deliver remote emails. 176Only useful together with the 177.Sq SMARTHOST 178option, because 179.Nm 180will deliver all mails to this port, regardless of whether a smarthost is set 181or not. 182.It Ic ALIASES Xo 183(string, default=/etc/aliases) 184.Xc 185Path to the local aliases file. 186Just stick with the default. 187The aliases file is of the format 188.Dl nam: dest1 dest2 ... 189In this case, mails to 190.Li nam 191will instead be delivered to 192.Li dest1 193and 194.Li dest2 , 195which in turn could be entries in 196.Pa /etc/aliases . 197The special name 198.Ql * 199can be used to create a catch-all alias, which gets used if no other 200matching alias is found. 201Use the catch-all alias only if you don't want any local mail to be 202delivered. 203.It Ic SPOOLDIR Xo 204(string, default=/var/spool/dma) 205.Xc 206Path to 207.Nm Ap s 208spool directory. 209Just stick with the default. 210.It Ic AUTHPATH Xo 211(string, default=not set) 212.Xc 213Path to the 214.Sq auth.conf 215file. 216.It Ic SECURETRANS Xo 217(boolean, default=commented) 218.Xc 219Uncomment if you want TLS/SSL secured transfer. 220.It Ic STARTTLS Xo 221(boolean, default=commented) 222.Xc 223Uncomment if you want to use STARTTLS. 224Only useful together with 225.Sq SECURETRANS . 226.It Ic OPPORTUNISTIC_TLS Xo 227(boolean, default=commented) 228.Xc 229Uncomment if you want to allow the STARTTLS negotiation to fail. 230Most useful when 231.Nm 232is used without a smarthost, delivering remote messages directly to 233the outside mail exchangers; in opportunistic TLS mode, the connection will 234be encrypted if the remote server supports STARTTLS, but an unencrypted 235delivery will still be made if the negotiation fails. 236Only useful together with 237.Sq SECURETRANS 238and 239.Sq STARTTLS . 240.It Ic CERTFILE Xo 241(string, default=empty) 242.Xc 243Path to your SSL certificate file. 244.It Ic SECURE Xo 245(boolean, default=commented) 246.Xc 247Uncomment this entry and change it to 248.Sq INSECURE 249to use plain text SMTP login over an insecure connection. 250You have to rename this variable manually to prevent that you send your 251password accidentally over an insecure connection. 252.It Ic DEFER Xo 253(boolean, default=commented) 254.Xc 255Uncomment if you want that 256.Nm 257defers your mail. 258You have to flush your mail queue manually with the 259.Fl q 260option. 261This option is handy if you are behind a dialup line. 262.It Ic FULLBOUNCE Xo 263(boolean, default=commented) 264.Xc 265Uncomment if you want the bounce message to include the complete original 266message, not just the headers. 267.It Ic MAILNAME Xo 268(string, default=empty) 269.Xc 270The internet hostname 271.Nm 272uses to identify the host. 273If not set or empty, the result of 274.Xr gethostname 3 275is used. 276If 277.Sq MAILNAME 278is an absolute path to a file, the first line of this file will be used 279as the hostname. 280.It Ic MASQUERADE Xo 281(string, default=empty) 282.Xc 283Masquerade the envelope-from addresses with this address/hostname. 284Use this setting if mails are not accepted by destination mail servers 285because your sender domain is invalid. 286This setting is overridden by the 287.Fl f 288flag and the 289.Ev EMAIL 290environment variable. 291.Pp 292If 293.Sq MASQUERADE 294does not contain a 295.Li @ 296sign, the string is interpreted as a host name. 297For example, setting 298.Sq MASQUERADE 299to 300.Ql john@ 301on host 302.Ql hamlet 303will send all mails as 304.Ql john@hamlet ; 305setting it to 306.Ql percolator 307will send all mails as 308.Ql Sm off Va username @percolator . 309.Sm on 310.It Ic NULLCLIENT Xo 311.Xc 312Bypass aliases and local delivery, and instead forward all mails to 313the defined 314.Sq SMARTHOST . 315.Sq NULLCLIENT 316requires 317.Sq SMARTHOST 318to be set. 319.El 320.Ss Environment variables 321The behavior of 322.Nm 323can be influenced by some environment variables. 324.Bl -tag -width 4n 325.It Ev EMAIL Xo 326.Xc 327Used to set the sender address (envelope-from). 328Use a plain address, in the form of 329.Li user@example.com . 330This value will be overridden when the 331.Fl f 332flag is used. 333.El 334.Sh SEE ALSO 335.Xr mailwrapper 8 , 336.Xr sendmail 8 337.Rs 338.%A "J. B. Postel" 339.%T "Simple Mail Transfer Protocol" 340.%O RFC 821 341.Re 342.Rs 343.%A "J. Myers" 344.%T "SMTP Service Extension for Authentication" 345.%O RFC 2554 346.Re 347.Rs 348.%A "P. Hoffman" 349.%T "SMTP Service Extension for Secure SMTP over TLS" 350.%O RFC 2487 351.Re 352.Sh HISTORY 353The 354.Nm 355utility first appeared in 356.Dx 1.11 . 357.Sh AUTHORS 358.An -nosplit 359.Nm 360was written by 361.An Matthias Schmidt Aq Mt matthias@dragonflybsd.org 362and 363.An Simon Schubert Aq Mt 2@0x2c.org . 364