Import nullmailer_2.1.orig.tar.gz

[dgit import orig nullmailer_2.1.orig.tar.gz]

9 files changed, 1386 insertions, 0 deletions

diff --git a/doc/DIAGRAM b/doc/DIAGRAM
new file mode 100644
index 0000000..4557037
--- /dev/null
+++ b/doc/DIAGRAM
@@ -0,0 +1,25 @@
+              sendmail --------------- mailq
+             /        \
+            /          \
+           /            \
+nullmailer-inject  nullmailer-smtpd
+           \            /
+            \          /
+             \        /
+          nullmailer-inject
+                  |
+                  |
+                  |
+          nullmailer-queue
+                  |
+                  |
+                  |
+              QUEUE/tmp -> QUEUE/queue -> QUEUE/failed
+                               |
+                               |
+                               |
+                        nullmailer-send ---- nullmailer-dsn
+                               |
+                               |
+                               |
+                          BIN/PROTOCOL
diff --git a/doc/Makefile.am b/doc/Makefile.am
new file mode 100644
index 0000000..c3428b8
--- /dev/null
+++ b/doc/Makefile.am
@@ -0,0 +1,9 @@
+# info_TEXINFOS = nullmailer.texi
+man_MANS = \
+	nullmailer-dsn.1 \
+	nullmailer-inject.1 \
+	sendmail.1 \
+	nullmailer.7 \
+	nullmailer-queue.8 \
+	nullmailer-send.8
+EXTRA_DIST = DIAGRAM $(man_MANS)
diff --git a/doc/Makefile.in b/doc/Makefile.in
new file mode 100644
index 0000000..9b65515
--- /dev/null
+++ b/doc/Makefile.in
@@ -0,0 +1,584 @@
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+	nullmailer-queue.8 \
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+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-man
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man: install-man1 install-man7 install-man8
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-man
+
+uninstall-man: uninstall-man1 uninstall-man7 uninstall-man8
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-man1 install-man7 \
+	install-man8 install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic pdf pdf-am ps ps-am tags-am \
+	uninstall uninstall-am uninstall-man uninstall-man1 \
+	uninstall-man7 uninstall-man8
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/doc/nullmailer-dsn.1 b/doc/nullmailer-dsn.1
new file mode 100644
index 0000000..5a321a1
--- /dev/null
+++ b/doc/nullmailer-dsn.1
@@ -0,0 +1,125 @@
+.TH nullmailer-dsn 1
+.SH NAME
+nullmailer-dsn \- Reformat a queued message into a delivery status notification (DSN)
+.SH SYNOPSIS
+.B nullmailer-dsn
+[
+.B options
+]
+.I status-code
+<
+.I message
+.SH DESCRIPTION
+This program reads a nullmailer queue message from standard input,
+transforms it into a delivery status notification, and writes the result
+to standard output. The output is formatted to be fed into
+.BR nullmailer-queue .
+.P
+All times in the options are expressed as seconds since midnight GMT January 1, 1970 (the UNIX epoch).
+.SH OPTIONS
+.TP
+.BI \-\-diagnostic\-code= STRING
+Sets the actual diagnostic code issued by the mail transport. Must be in the form of
+"\fItype\fR; \fItext\fR", where
+.I type
+would typically be the protocol name, such as
+.BR SMTP .
+This adds a
+.B Diagnostic-Code
+header for each recipient.
+.TP
+.BI \-\-envelope\-id= STRING
+Original envelope ID. Setting this adds a
+.B Original-Envelope-Id
+header to the delivery status section.
+.TP
+.BI \-\-last\-attempt= TIME
+Sets the time of the last attempted delivery. Defaults to the access time of the input message.
+This sets the date in the
+.B Last-Attempt-Date
+header for each recipient.
+.TP
+.BI \-\-max\-lines= COUNT
+Sets the maximum number of lines of the original message to copy into the generated message.
+A value of zero copies only the original header.
+Negative values copy the whole message.
+Defaults to
+.I bouncelines
+below, or zero if that is empty.
+.TP
+.BI \-\-orig\-timestamp= TIME
+Sets the time of the original message. Defaults to the change time of
+the input message. This sets the date in the
+.B Arrival-Date
+header in the delivery status section.
+.TP
+.BI \-\-remote= STRING
+Sets the name of the remote MTA server.
+This adds a
+.B Remote-MTA
+header for each recipient.
+.TP
+.BI \-\-retry\-until= TIME
+Sets the time of the (future) final delivery attempt. No default. This adds a
+.B Will-Retry-Until
+header for each recipient.
+.SH RETURN VALUE
+Exits 0 if it was successful, otherwise it prints a diagnostic message
+to standard error and exits 1.
+.SH CONTROL FILES
+.TP
+.B adminaddr
+If
+.B doublebounceto
+is empty, double bounces are delivered to this address instead.
+If no address is configured, double bounces are not generated.
+.TP
+.B bouncelines
+Sets the maximum number of lines of the original message to copy.
+May be overridden by
+.B \-\-max\-lines
+as above.
+.TP
+.B bounceto
+The address to which all bounces should be sent.
+If it is empty, the original sender address is used.
+.TP
+.B defaultdomain
+The content of this file is appended to any host name that does not
+contain a period (except
+.BR localhost ),
+including
+.I defaulthost
+and
+.IR idhost .
+Defaults to the value of the
+.B me
+control file, if it exists, otherwise the literal name
+.BR defaultdomain .
+.TP
+.B defaulthost
+The content of this file is appended to any address that is missing a
+host name.
+Defaults to the value of the
+.I me
+control file, if it exists, otherwise the literal name
+.BR defaulthost .
+.TP
+.B doublebounceto
+If the original sender was empty (the original message was a delivery
+status or disposition notification), the double bounce is sent to the
+address in this file.
+.TP
+.B idhost
+The content of this file is used when building the message-id string
+for the message.
+Defaults to the canonicalized value of
+.IR defaulthost .
+.TP
+.B me
+The fully-qualified host name of the computer running nullmailer.
+Defaults to the literal name
+.BR me .
+.SH SEE ALSO
+nullmailer-queue(8),
+nullmailer-send(8)
diff --git a/doc/nullmailer-inject.1 b/doc/nullmailer-inject.1
new file mode 100644
index 0000000..6acae7b
--- /dev/null
+++ b/doc/nullmailer-inject.1
@@ -0,0 +1,256 @@
+.TH nullmailer-inject 1
+.SH NAME
+nullmailer-inject \- Reformat and inject a message into the queue.
+.SH SYNOPSIS
+.B nullmailer-inject
+[\-a]
+[\-b]
+[\-e]
+[\-f sender]
+[\-h]
+.I [recipient [recipient ...]]
+.SH DESCRIPTION
+This program reads a email message from standard input, reformats its
+header to comply with RFC822, and sends the resulting message to the
+queue.
+.SS HEADER FIELDS
+The following lines are parsed for recipient addresses:
+.IR To ,
+.IR Cc ,
+.IR Bcc ,
+.IR Apparently-To ,
+.IR Resent-To ,
+.IR Resent-Cc ,
+and
+.IR Resent-Bcc .
+
+The following sender address lines are parsed and rewritten:
+.IR Sender ,
+.IR From ,
+.IR Reply-To ,
+.IR Return-Path ,
+.IR Return-Receipt-To ,
+.IR Errors-To ,
+.IR Resent-Sender ,
+.IR Resent-From ,
+and
+.IR Resent-Reply-To .
+If the
+.I Return-Path
+header field is present and contains a single address, its contents
+will be used to set the envelope sender address.
+
+If the message contains any of the following fields, it is treated as
+a resent message:
+.IR Resent-Sender ,
+.IR Resent-From ,
+.IR Resent-Reply-To ,
+.IR Resent-To ,
+.IR Resent-Cc ,
+.IR Resent-Bcc ,
+.IR Resent-Date ,
+.IR Resent-Message-ID .
+If the message is resent, only the recipient fields prefixed with
+.I Resent-
+are examined for addresses.
+
+Any occurrences of
+.IR Bcc ,
+.IR Resent-Bcc ,
+.IR Return-Path ,
+or
+.I Content-Length
+are discarded after they are parsed (if necessary).
+
+If the header lacks a
+.I Message-Id
+field, a unique string is generated and added to the message.
+If the header lacks a
+.I Date
+field, the current local date and time in RFC822 format is appended to
+the message.
+If the message has no
+.I To
+or
+.I Cc
+fields, the following line is appended to the message:
+
+.EX
+	Cc: recipient list not shown: ;
+.EE
+.SS ADDRESS LISTS
+Address lists are expected to follow the syntax set out in RFC822.
+The following is a simplified explanation of the syntax.
+
+An address list is list of addresses separated by commas.
+An individual address may have one of the following three forms:
+.IR user@fqdn ,
+.IR comment <user@fqdn> ,
+or
+.IR phrase: address-list; .
+Any of the first two forms may be used within the address list of the
+third form.
+Any word containing special characters must be placed in double quotes
+and the special characters must be preceded with a backslash.
+Comments may be placed between addresses in parenthesis.
+All comments are ignored.
+
+Addresses lists are reformatted as they are parsed for ease of later
+re-parsing when the message reaches the destination(s).
+If an address is missing a fqdn,
+.B nullmailer-inject
+adds one.
+.SH OPTIONS
+.TP
+.I \-a
+Use only the command line arguments as recipient addresses.
+Ignore the header recipient lines.
+.TP
+.I \-b
+Use both the command line arguments and data from the message header
+as recipient addresses.
+.TP
+.I \-e
+Use either the command line arguments (if there are any) or data from
+the message header (if there are no arguments) as the recipient
+addresses.
+.TP
+.I \-f sender
+Set the envelope sender address to
+.IR sender .
+.TP
+.I \-h
+Use only data from the message header as the recipient addresses.
+.TP
+.I \-n
+Do not queue the message, but print the reformatted contents to
+standard output.
+.TP
+.I \-v
+Print out the envelope (sender and recipient addresses) preceding the
+message when printing the message to standard output.
+.SH RETURN VALUE
+Exits 0 if it was successful, otherwise it prints a diagnostic message
+to standard error and exits 1.
+.SH ENVIRONMENT
+The environment variable
+.BR NULLMAILER_FLAGS
+is parsed and the behavior of
+.B nullmailer-inject
+is modified if any of the following letters are present:
+.TP
+.B c
+Use "address (comment)" style in the generated
+.B From
+field instead of the default "comment <address>" style.
+.TP
+.B f
+Ignore and remove any
+.B From
+header lines and always insert a generated one.
+.TP
+.B i
+Ignore and remove any
+.B Message-Id
+header lines.
+.TP
+.B s
+Ignore and remove any
+.B Return-Path
+header lines.
+.TP
+.B t
+Insert a
+.BR To
+line containing a list of the recipients if the header does not
+contain either a
+.B To
+or a
+.B Cc
+field.
+If the message is determined to be a resent message (see above), a
+.B Resent-To
+field is added if the header does not contain either a
+.BR Resent-To
+or a
+.BR Resent-Cc
+field.
+.PP
+The user name is set by
+.BR NULLMAILER_USER ,
+.BR MAILUSER ,
+.BR USER ,
+or
+.BR LOGNAME ,
+whichever comes first.  If none of the above are set the name is taken
+from the password file, or set to
+.I unknown
+if that fails.
+
+The host name is set by the canonicalized value of
+.BR NULLMAILER_HOST ,
+.BR MAILHOST ,
+or
+.BR HOSTNAME ,
+whichever comes first, or the
+.I defaulthost
+config file if none of the above are set (see below).
+
+The full name of the user is set by
+.BR NULLMAILER_NAME ,
+.BR MAILNAME ,
+or
+.BR NAME ,
+whichever comes first.
+
+The user and host name of the envelope sender default to the user and
+host name set above, but may be overridden by
+.BR NULLMAILER_SUSER
+and
+.BR NULLMAILER_SHOST .
+
+If
+.BR NULLMAILER_QUEUE
+is set, the program named is used in place of
+.B nullmailer-queue
+to queue the formatted message.
+.SH CONTROL FILES
+When reading the following files, a single line is read and stripped
+of all leading and trailing whitespace characters.
+.TP
+.B defaultdomain
+The content of this file is appended to any host name that does not
+contain a period (except
+.BR localhost ),
+including
+.I defaulthost
+and
+.IR idhost .
+Defaults to the value of the
+.B me
+control file, if it exists, otherwise the literal name
+.BR defaultdomain .
+.TP
+.B defaulthost
+The content of this file is appended to any address that is missing a
+host name.
+Defaults to the value of the
+.I me
+control file, if it exists, otherwise the literal name
+.BR defaulthost .
+.TP
+.B idhost
+The content of this file is used when building the message-id string
+for the message.
+Defaults to the canonicalized value of
+.IR defaulthost .
+.TP
+.B me
+The fully-qualified host name of the computer running nullmailer.
+Defaults to the literal name
+.BR me .
+.SH SEE ALSO
+nullmailer-queue(8)
+.SH NOTES
+This document glosses over very many details of how address parsing
+and rewriting actually works (among other things).
diff --git a/doc/nullmailer-queue.8 b/doc/nullmailer-queue.8
new file mode 100644
index 0000000..291ea65
--- /dev/null
+++ b/doc/nullmailer-queue.8
@@ -0,0 +1,53 @@
+.TH nullmailer-queue 8
+.SH NAME
+nullmailer-queue \- insert mail messages into the queue
+.SH SYNOPSIS
+.B nullmailer-queue
+.SH DESCRIPTION
+This program reads a formatted mail message from standard input and
+safely injects it into the outgoing mail queue.
+.PP
+The data sent into standard input is expected to have the following
+format: one line containing the envelope sender, one or more lines
+containing the recipients, a single blank line, and then the contents
+of the message exactly as it is to be transmitted to the destination.
+All lines are terminated with a single line-feed character.
+All addresses must contain a fully-qualified domain name.
+.PP
+.SH RETURN VALUE
+Exits 0 if it successfully queues the message.
+If it failed to queue the message, it exits 1 and prints an error
+message to stdandard output.
+.SH CONTROL FILES
+.TP
+.B adminaddr
+If this file is not empty, all recipients to users at either
+"localhost" (the literal string) or the canonical host name (from the
+.I me
+control file) are remapped to this address.
+This is provided to allow local daemons to be able to send email to
+"somebody@localhost" and have it go somewhere sensible instead of
+being bounced by your relay host. To send to multiple addresses, put
+them all on one line separated by a comma.
+.TP
+.B allmailfrom
+If this file is not empty, its contents will override the envelope
+sender on all messages.
+.SH OTHER FILES
+.TP
+.B /var/spool/nullmailer/queue
+The directory into which the completed messages are moved.
+.TP
+.B /var/spool/nullmailer/tmp
+The directory in which messages are formed temporarily.
+.TP
+.B /var/spool/nullmailer/trigger
+A pipe used to trigger
+.BR nullmailer-send
+to immediately start sending the message from the queue.
+.SH SEE ALSO
+nullmailer-inject(1),
+nullmailer-send(8)
+.SH LIMITATIONS
+This program should enforce system-wide configurable message length
+limits.
diff --git a/doc/nullmailer-send.8 b/doc/nullmailer-send.8
new file mode 100644
index 0000000..34e5f96
--- /dev/null
+++ b/doc/nullmailer-send.8
@@ -0,0 +1,204 @@
+.TH nullmailer-send 8
+.SH NAME
+nullmailer-send \- Send queued messages
+.SH SYNOPSIS
+.B nullmailer-send
+.SH DESCRIPTION
+This program is responsible for coordinating the transmission of
+messages that have been queued by
+.BR nullmailer-queue .
+It uses a variety of protocol modules to deliver the messages from the
+queue to remote "smart" servers.
+.P
+When the program starts, the queue is scanned to build a list of
+messages to send.
+The queue is rescanned when either the trigger is pulled, or after
+.B pausetime
+seconds have elapsed after the last failed delivery.
+When there are no messages in the queue, nullmailer does no rescanning
+until the trigger is pulled.
+Pulling the trigger consists of opening up the trigger named pipe and
+writing a single byte to it, which causes this program to be awakened
+(if it's not already processing the queue).
+This procedure is done by
+.B nullmailer-queue
+to ensure that messages are delivered immediately.
+You can start delivery by hand from the command line like this:
+
+.EX
+    echo 1 > trigger
+.EE
+.P
+Delivery of messages consists of reading the list of remote servers and
+then trying to deliver the messages to these servers as follows.
+For each remote in the list, the named protocol handler is executed once
+for each message remaining in the queue.
+If the protocol handler succeeds, the message is removed from the queue
+and processing continues with the next message.
+If the protocol handler reports a permanent failure
+or the message has been in the queue longer than
+.IR queuelifetime ,
+the message is moved into the
+.B failed
+queue and a bounce message is generated with
+.BR nullmailer-dsn .
+If any messages remain in the queue, processing of the remaining
+messages continues with the next remote.
+When all the remotes have been tried,
+.B nullmailer-send
+sleeps for a number of seconds specified by
+.B pausetime
+before retrying sending the contents of the queue.
+.SH CONTROL FILES
+All the control files are reread each time the queue is run.
+.TP
+.B helohost
+Sets the environment variable
+.B $HELOHOST
+which is used by the SMTP protocol module to set the parameter given to
+the
+.I HELO
+command.  Defaults to the value of the
+.B me
+configuration file.
+.TP
+.B maxpause
+The maximum time to pause between successive queue runs, in seconds.
+Defaults to 24 hours
+.RB ( 86400 ).
+.TP
+.B pausetime
+The minimum time to pause between successive queue runs
+when there are messages in the queue, in seconds.
+Defaults to 1 minute
+.RB ( 60 ).
+Each time this timeout is reached, the timeout is doubled to a maximum
+of
+.BR maxpause .
+After new messages are injected, the timeout is reset.
+If this is set to
+.BR 0 ,
+nullmailer-send will exit immediately after going through the queue once
+(one-shot mode).
+.TP
+.B queuelifetime
+The maximum time a message is allowed to live in the queue before being
+considered permanently failed, in seconds. Defaults to 7 days
+.RB ( 604800 ).
+.TP
+.B remotes
+This file contains a list of remote servers to which to send each
+message.
+Each line of this file contains a remote host name or address followed
+by an optional protocol string, separated by white space.
+The protocol name defaults to
+.BR smtp ,
+and may be followed by additional options for that module.
+See the "PROTOCOL OPTIONS" section for a list of the available options.
+The options may optionally be prefixed by
+.I --
+but this is not required.
+The line is parsed according to standard shell quoting rules.
+For example, to connect to port 2525 on your SMTP smart host,
+which also requires SMTP authentication, and initiate TLS with
+STARTTLS, use:
+
+.EX
+    smarthost.dom smtp port=2525 starttls user=user pass='my pass phrase'
+.EE
+
+Blank lines and lines starting with a pound (\fI#\fR) are ignored.
+.TP
+.B sendtimeout
+The time to wait for a remote module listed above to complete sending a
+message before killing it and trying again, in seconds.
+Defaults to 1 hour
+.RB ( 3600 ).
+If this is set to
+.BR 0 ,
+.B nullmailer-send
+will wait forever for messages to complete sending.
+.SH "PROTOCOL OPTIONS"
+.TP
+.B port=\fIPORT
+Set an alternate port number to connect to on the remote host. For example, SMTP may use
+.B port=587
+for the alternate SMTP "submission" port.
+.TP
+.B user=\fIUSERNAME
+Set the SMTP authentication user name.
+.TP
+.B pass=\fIPASSWORD
+Set the SMTP authentication password.
+.TP
+.BI source= HOSTNAME
+Set the source address for connections to the remote host.
+.TP
+.B auth-login
+Force SMTP "AUTH LOGIN" mode instead of auto-detecting.
+.TP
+.B tls
+Connect using TLS.
+This will automatically switch the default port to
+.BR 465 .
+.TP
+.B ssl
+Alias for the
+.B tls
+option for compatibility.
+.TP
+.B starttls
+Use the
+.B STARTTLS
+command to initiate a TLS session.
+.TP
+.B x509certfile=\fIFILENAME
+Set the filename for a TLS client certificate to send to the server.
+.TP
+.B x509keyfile=\fIFILENAME
+Set the filename for the private key for a TLS client certificate.
+Defaults to the same file name as
+.BR x509certfile .
+.TP
+.B x509cafile=\fIFILENAME
+Set the TLS certificate authority trust filename. Defaults to
+.BR /etc/ssl/certs/ca-certificates.crt .
+.TP
+.B x509crlfile=\fIFILENAME
+Set the TLS certificate revocation list filename.
+.TP
+.B x509fmtder
+Specify that TLS X.509 files above are in DER format instead of PEM.
+.TP
+.B insecure
+Don't abort a TLS connection if the server certificate fails validation.
+Use this only if you know the server uses an invalid certificate.
+.TP
+.B tls-anon-auth
+Use TLS anonymous authentication - replacing certificate authentication.
+This means no external certificates or passwords are needed to set up the connection.
+With this option your connection is vulnerable to man-in-the-middle (active or redirection) attacks.
+However, the data are integrity protected and encrypted from passive eavesdroppers.
+This option must be used with the insecure option - to acknowledge that you know what you are doing.
+.SH FILES
+.TP
+.B /var/spool/nullmailer/failed
+The failed message queue.
+.TP
+.B /var/spool/nullmailer/queue
+The outgoing message queue.
+.TP
+.B /var/spool/nullmailer/trigger
+A trigger file to cause immediate delivery.
+.TP
+.B /usr/local/etc/nullmailer
+The configuration directory.
+.TP
+.B /usr/local/libexec/nullmailer
+The protocol program directory.
+.SH SEE ALSO
+nullmailer-dsn(1),
+nullmailer-inject(1),
+nullmailer-queue(8),
+mailq(1)
+http://www.postfix.org/TLS_README.html on how to setup a certificate-less Postfix SMTP server
diff --git a/doc/nullmailer.7 b/doc/nullmailer.7
new file mode 100644
index 0000000..6ccb524
--- /dev/null
+++ b/doc/nullmailer.7
@@ -0,0 +1,37 @@
+.TH nullmailer 7
+.SH NAME
+nullmailer \- Overview of nullmailer documentation
+.SH INTRODUCTION
+.B nullmailer
+is a simple and secure relay-only mail transport agent.
+.P
+Documentation on how messages are reformatted and injected into the
+queue can be found in
+.BR nullmailer-inject (1).
+Documentation on how messages are actually inserted into the queue can
+be found in
+.BR nullmailer-queue (8).
+The process of sending queued messages is described in
+.BR nullmailer-send (8).
+.P
+The following table lists all the control files used by
+.BR nullmailer .
+.P
+.RS
+.nf
+.ta 5c
+control file	used by
+.I adminaddr	\fBnullmailer-dsn\fR, \fBnullmailer-queue
+.I allmailfrom	\fBnullmailer-queue
+.I defaultdomain	\fBnullmailer-dsn\fR, \fBnullmailer-inject
+.I defaulthost	\fBnullmailer-dsn\fR, \fBnullmailer-inject
+.I doublebounceto	\fBnullmailer-dsn
+.I helohost	\fBnullmailer-send
+.I idhost	\fBnullmailer-dsn\fR, \fBnullmailer-inject
+.I maxpause	\fBnullmailer-send
+.I me		\fBnullmailer-dsn\fR, \fBnullmailer-inject
+.I pausetime	\fBnullmailer-send
+.I remotes	\fBnullmailer-send
+.I sendtimeout	\fBnullmailer-send
+.fi
+.RE
diff --git a/doc/sendmail.1 b/doc/sendmail.1
new file mode 100644
index 0000000..705034f
--- /dev/null
+++ b/doc/sendmail.1
@@ -0,0 +1,93 @@
+.TH sendmail 1
+.SH NAME
+sendmail \- sendmail emulator interface for nullmailer
+.SH SYNOPSIS
+.B sendmail
+[
+.B flags
+] [
+.I recipients
+] <
+.I message
+.SH DESCRIPTION
+This program is a front end program for
+.B nullmailer-inject
+and
+.BR nullmailer-smtpd .
+It is used by programs that expect a
+.I sendmail
+interface for sending email.
+After parsing the command-line arguments, this program executes either
+.B nullmailer-inject
+or
+.B nullmailer-smtpd
+depending on the presence of the
+.I \-bs
+option on the command-line.
+See the documentation for
+.B nullmailer-inject
+for details on how messages are reformatted and queued.
+.SH OPTIONS
+.TP
+.B \-B TYPE
+.TP
+.B \-C FILE
+.TP
+.B \-d DEBUG
+.TP
+.B \-h COUNT
+.TP
+.B \-i
+.TP
+.B \-L TAG
+.TP
+.B \-N DSN
+.TP
+.B \-n
+.TP
+.B \-O OPTION
+.TP
+.B \-o OPTION
+.TP
+.B \-p PROTOCOL
+.TP
+.B \-q TIME
+.TP
+.B \-R RETURN
+.TP
+.B \-U
+.TP
+.B \-V ENVID
+.TP
+.B \-v
+.TP
+.B \-X LOGFILE
+Ignored for compatibility
+.TP
+.B \-bm
+Read mail from standard input (default).
+.TP
+.B \-bp
+List information about mail queue. This executes
+.BR mailq .
+.TP
+.B \-bs
+Use the SMTP protocol on standard input and standard output. This
+executes
+.BR nullmailer-smtpd .
+.TP
+.B \-F ADDRESS
+Sets the full name of the sender.
+.TP
+.B \-f ADDRESS
+Sets the envelope sender address.
+.TP
+.B \-r ADDRESS
+An alternate and obsolete form of the \-f flag.
+.TP
+.B \-t
+Read message for recipients and ignore the command-line arguments.
+.SH SEE ALSO
+mailq(1),
+nullmailer-inject(1),
+nullmailer-smtpd(1)