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