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32 .\" $DragonFly: src/libexec/dma/dma.8,v 1.10 2008/09/06 14:17:56 swildner Exp $
39 .Nd DragonFly Mail Agent
53 is a small Mail Transport Agent (MTA), designed for home and office use.
54 It accepts mails from locally installed Mail User Agents (MUA) and
55 delivers the mails either locally or to a remote destination.
56 Remote delivery includes several features like TLS/SSL support and SMTP
60 is not intended as a replacement for real, big MTAs like
66 does not listen on port 25 for incoming connections.
68 The options are as follows:
69 .Bl -tag -width indent
72 acts as a compatibility option for sendmail.
74 .Bl -tag -width indent
76 List all mails currently stored in the mail queue.
78 Queue the mail, but don't attempt to deliver it.
81 config file setting below.
88 Don't run in the background.
91 Set sender address (envelope-from) to
93 This overrides the value of the environment variable
96 Ignore dots alone on lines by themselves in incoming messages.
97 This should be set if you are reading data from a file.
99 Set the identifier used in syslog messages to the supplied
101 This is a compatibility option for sendmail.
103 This is a compatibility option for sendmail.
104 .It Fl o Ns Ar option
109 All other options are ignored.
110 .It Fl q Ns Op Ar arg
111 Process saved messages in the queue.
112 The argument is optional and ignored.
117 Obtain recipient addresses from the message header.
127 header will be removed independent of whether
133 can be configured with three config files:
142 These three files are stored per default in
145 Every file contains parameters of the form
147 Lines containing boolean values are set to
149 if the line is commented and to
151 if the line is uncommented.
152 Empty lines or lines beginning with a
155 Parameter names and their values are case sensitive.
158 SMTP authentication can be configured in
160 Each line has the format
161 .Dq Li user|smarthost:password .
163 Most of the behaviour of
169 (string, default=empty)
171 If you want to send outgoing mails via a smarthost, set this variable to
172 your smarthosts address.
174 (numeric, default=25)
176 Use this port to deliver remote emails.
177 Only useful together with the
181 will deliver all mails to this port, regardless of whether a smarthost is set
184 (string, default=/etc/aliases)
186 Path to the local aliases file.
187 Just stick with the default.
188 The aliases file is of the format
189 .Dl nam: dest1 dest2 ...
190 In this case, mails to
192 will instead be delivered to
196 which in turn could be entries in
200 can be used to create a catch-all alias, which gets used if no other
201 matching alias is found.
202 Use the catch-all alias only if you don't want any local mail to be
205 (string, default=/var/spool/dma)
210 Just stick with the default.
212 (string, default=not set)
217 .It Ic SECURETRANS Xo
218 (boolean, default=commented)
220 Uncomment if you want TLS/SSL secured transfer.
222 (boolean, default=commented)
224 Uncomment if you want to use STARTTLS.
225 Only useful together with
227 .It Ic OPPORTUNISTIC_TLS Xo
228 (boolean, default=commented)
230 Uncomment if you want to allow the STARTTLS negotiation to fail.
233 is used without a smarthost, delivering remote messages directly to
234 the outside mail exchangers; in opportunistic TLS mode, the connection will
235 be encrypted if the remote server supports STARTTLS, but an unencrypted
236 delivery will still be made if the negotiation fails.
237 Only useful together with
242 (string, default=empty)
244 Path to your SSL certificate file.
246 (boolean, default=commented)
248 Uncomment this entry and change it to
250 to use plain text SMTP login over an insecure connection.
251 You have to rename this variable manually to prevent that you send your
252 password accidentally over an insecure connection.
254 (boolean, default=commented)
256 Uncomment if you want that
259 You have to flush your mail queue manually with the
262 This option is handy if you are behind a dialup line.
264 (boolean, default=commented)
266 Uncomment if you want the bounce message to include the complete original
267 message, not just the headers.
269 (string, default=empty)
271 The internet hostname
273 uses to identify the host.
274 If not set or empty, the result of
279 is an absolute path to a file, the first line of this file will be used
282 (string, default=empty)
284 Masquerade the envelope from addresses with this address/hostname.
285 Use this setting if mails are not accepted by destination mail servers
286 because your sender domain is invalid.
287 This setting is overridden by the
291 environment variable.
297 sign, the string is interpreted as a host name.
304 will send all mails as
308 will send all mails as
309 .Ql Sm off Va username @percolator .
312 .Ss Environment variables
315 can be influenced by some environment variables.
320 Used to set the sender address (envelope-from).
321 Use a plain address, in the form of
322 .Li user@example.com .
323 This value will be overridden when the
333 .%T "Simple Mail Transfer Protocol"
338 .%T "SMTP Service Extension for Authentication"
343 .%T "SMTP Service Extension for Secure SMTP over TLS"
349 utility first appeared in
354 .An Matthias Schmidt Aq matthias@dragonflybsd.org
356 .An Simon Schubert Aq corecode@dragonflybsd.org .