GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  DMA (8)

NAME

dma - DragonFly Mail Agent

CONTENTS

Synopsis
Description
Configuration
File Format
Parameters
     Environment variables
See Also
History
Authors

SYNOPSIS

dma [-DiOt] [-Amode] [-bmode] [-f sender] [-L tag] [-ooption] [-r sender] [-q[arg]] [recipient ...]

DESCRIPTION

dma is a small Mail Transport Agent (MTA), designed for home and office use. It accepts mails from locally installed Mail User Agents (MUA) and delivers the mails either locally or to a remote destination. Remote delivery includes several features like TLS/SSL support and SMTP authentication.

dma is not intended as a replacement for real, big MTAs like sendmail(8) or postfix(1). Consequently, dma does not listen on port 25 for incoming connections.

The options are as follows:
-A mode
  -Ac acts as a compatibility option for sendmail.
-b mode
 
-bp List all mails currently stored in the mail queue.
-bq Queue the mail, but don’t attempt to deliver it. See also the 'DEFER' config file setting below.

All other mode s are are ignored.
-D Don’t run in the background. Useful for debugging.
-f sender
  Set sender address (envelope-from) to sender. This overrides the value of the environment variable EMAIL.
-i Ignore dots alone on lines by themselves in incoming messages. This should be set if you are reading data from a file.
-L tag Set the identifier used in syslog messages to the supplied tag. This is a compatibility option for sendmail.
-O This is a compatibility option for sendmail.
-o option
  Specifying -oi is synonymous to -i . All other options are ignored.
-q [arg]
  Process saved messages in the queue. The argument is optional and ignored.
-r sender
  Same as -f .
-t Obtain recipient addresses from the message header. dma will parse the To:, Cc:, and Bcc: headers. The Bcc: header will be removed independent of whether -t is specified or not.

CONFIGURATION

dma can be configured with two config files:

  • auth.conf
  • dma.conf

These two files are stored per default in /usr/local/etc/dma.

FILE FORMAT

Every file contains parameters of the form 'name value'. Lines containing boolean values are set to 'NO' if the line is commented and to 'YES' if the line is uncommented. Empty lines or lines beginning with a '#' are ignored. Parameter names and their values are case sensitive.

PARAMETERS

    auth.conf

SMTP authentication can be configured in auth.conf. Each line has the format "user|smarthost:password".

    dma.conf

Most of the behaviour of dma can be configured in dma.conf.
SMARTHOST Xo
  (string, default=empty)
  If you want to send outgoing mails via a smarthost, set this variable to your smarthosts address.
PORT Xo
  (numeric, default=25)
  Use this port to deliver remote emails. Only useful together with the 'SMARTHOST' option, because dma will deliver all mails to this port, regardless of whether a smarthost is set or not.
ALIASES Xo
  (string, default=/etc/aliases)
  Path to the local aliases file. Just stick with the default. The aliases file is of the format

    nam: dest1 dest2 ...

In this case, mails to nam will instead be delivered to dest1 and dest2, which in turn could be entries in /etc/aliases. The special name *’ can be used to create a catch-all alias, which gets used if no other matching alias is found. Use the catch-all alias only if you don’t want any local mail to be delivered.

SPOOLDIR Xo
  (string, default=/var/spool/dma)
  Path to Ap s spool directory. Just stick with the default.
AUTHPATH Xo
  (string, default=not set)
  Path to the 'auth.conf' file.
SECURETRANS Xo
  (boolean, default=commented)
  Uncomment if you want TLS/SSL secured transfer.
STARTTLS Xo
  (boolean, default=commented)
  Uncomment if you want to use STARTTLS. Only useful together with 'SECURETRANS'.
OPPORTUNISTIC_TLS Xo
  (boolean, default=commented)
  Uncomment if you want to allow the STARTTLS negotiation to fail. Most useful when dma is used without a smarthost, delivering remote messages directly to the outside mail exchangers; in opportunistic TLS mode, the connection will be encrypted if the remote server supports STARTTLS, but an unencrypted delivery will still be made if the negotiation fails. Only useful together with 'SECURETRANS' and 'STARTTLS'.
CERTFILE Xo
  (string, default=empty)
  Path to your SSL certificate file.
SECURE Xo
  (boolean, default=commented)
  Uncomment this entry and change it to 'INSECURE' to use plain text SMTP login over an insecure connection. You have to rename this variable manually to prevent that you send your password accidentally over an insecure connection.
DEFER Xo
  (boolean, default=commented)
  Uncomment if you want that dma defers your mail. You have to flush your mail queue manually with the -q option. This option is handy if you are behind a dialup line.
FULLBOUNCE Xo
  (boolean, default=commented)
  Uncomment if you want the bounce message to include the complete original message, not just the headers.
MAILNAME Xo
  (string, default=empty)
  The internet hostname dma uses to identify the host. If not set or empty, the result of gethostname(3) is used. If 'MAILNAME' is an absolute path to a file, the first line of this file will be used as the hostname.
MASQUERADE Xo
  (string, default=empty)
  Masquerade the envelope-from addresses with this address/hostname. Use this setting if mails are not accepted by destination mail servers because your sender domain is invalid. This setting is overridden by the -f flag and the EMAIL environment variable.

If 'MASQUERADE' does not contain a @ sign, the string is interpreted as a host name. For example, setting 'MASQUERADE' to john@’ on host hamlet’ will send all mails as john@hamlet’; setting it to percolator’ will send all mails as Sm off username @percolator’.
.Sm on

NULLCLIENT Xo
 
  Bypass aliases and local delivery, and instead forward all mails to the defined 'SMARTHOST'. 'NULLCLIENT' requires 'SMARTHOST' to be set.

    Environment variables

The behavior of dma can be influenced by some environment variables.
EMAIL Xo
 
  Used to set the sender address (envelope-from). Use a plain address, in the form of user@example.com. This value will be overridden when the -f flag is used.

SEE ALSO

mailaddr(7), mailwrapper(8), sendmail(8)
.Rs Simple Mail Transfer Protocol
.Re
.Rs SMTP Service Extension for Authentication
.Re
.Rs SMTP Service Extension for Secure SMTP over TLS
.Re

HISTORY

The dma utility first appeared in
.Dx 1.11 .

AUTHORS


.An -nosplit dma was written by
.An Matthias Schmidt Aq Mt matthias@dragonflybsd.org and
.An Simon Schubert Aq Mt 2@0x2c.org .
Search for    or go to Top of page |  Section 8 |  Main Index


Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.