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MAILBOT(1)		    Double Precision, Inc.		    MAILBOT(1)

       mailbot - A MIME-aware autoresponder utility

       mailbot [options] {program} [arg...]

       In .mailfilter:

       if (/^Subject: *info/)
	    cc "| mailbot -t /usr/share/autoresponse/info -d autoresponsedb \
		   -A 'From:' /usr/bin/sendmail	-f ''"

       mailbot reads an	E-mail message on standard input and creates an	E-mail
       message replying	to the original	message's sender. A program is
       specified as an argument	to mailbot after all of	mailbot	options.
       program is expected to read the created autoreply on its	standard
       input, and mail it. If program is not specified,	mailbot	runs 'sendmail
       -f ""'.

       mailbot has several options for suppressing duplicate autoresponse
       messages. If mailbot chooses not	to send	an autoresponse, it quietly
       terminates without running program. The autoresponse is optionally
       formatted as a MIME delivery status notification.

       The text	of the autoresponse is specified by the	-t or the -m argument.
       Either one is required. Everything else is optional. The	only exception
       is the -T replydraft option, which requires the -l option instead of
       either -t or -m.	The default behavior is	to send	an autoresponse	unless
       the original message has	the "Precedence: junk" or the "Precedence:
       bulk" header, or	the "Precedence: list" header, or the "List-ID:"
       header, or if its MIME content type is "multipart/report" (this is the
       MIME content type for delivery status notifications). The -M option
       formats the the autoresponse itself as a	MIME delivery status

       -A "header: value"
	   Add a header	to the autoresponse. Multiple -A options are allowed.
	   In most situations, the -A option must be used to set the "From:"
	   header in the autogenerated response.

	   Address the autoresponse to address,	which must be an RFC 2822[1]
	   address. By default mailbot takes the autoresponse address from the
	   From: (or the Reply-To:) header in the original message.  -f, if
	   present, overrides and explicitly sets the autoresponse address.
	   "address" must immediately follow the -f option without an
	   intervening space (it's a single command line argument). An -f
	   option without an address takes the address from the	SENDER
	   environment variable.

       -t filename
	   Read	text autoresponse from filename, which must contain a plain
	   text	message	in "flowed-text" format. In a "flowed-text"-formatted
	   message, each line that ends	with a space character indicates that
	   the line logically flows into the next line.	This allows the
	   message to be reformatted for any shown display width.

	       Messages	in languages (see the -c option) which use spaces as
	       word delimiters must have two spaces at the end of a flowed
	       line. The last space on a flowed	line is	logically removed, and
	       the first space separates the last word on the previous line
	       from the	first word on the next line. Otherwise,	the two	words
	       will not	have a logical space between them if they get
	       repositioned as part of adjusting the message's width for

	       Messages	in ideographic languages that do not use spaces	as
	       word delimiters need only one space trailing a flowed line.

	       The trailing whitespace has no visual impact when shown by
	       software	that does not implemented flowed text format, and
	       always displays messages	using their original width.

       -c charset
	   Set the autoresponse's MIME character set to	charset. Run mailbot
	   without any arguments to see	the default character set.

       -m filename
	   Read	a MIME autoresponse from filename. This	is similar to the -t
	   option, except that filename	contains MIME headers, followed	by a
	   blank line, and the corresponding MIME content. The contents	of
	   filename are	inserted in the	autoresponse without further

	   The specified file must contain the "Content-Type" header
	   specifying the "text/plain" MIME type, with the "format=flowed",
	   "delsp=yes",	and the	"charset" attributes, which override the -c
	   parameter. If the specified file has	a "Content-Transfer-Encoding"
	   header it must be either "7bit" or "8bit", it may not be
	   "quoted-printable".	mailbot	always drops any existing
	   "Content-Transfer-Encoding" header and always adds the
	   "Content-Transfer-Encoding: 8bit" header, even with the -m, since
	   the salutation inserted into	the message includes the sender's
	   name, which may contain 8-bit characters. Example:

	       Content-Type: text/plain; format=flowed;	delsp=yes;

	       Mary had	a little lamb,
	       Its fleece was white as snow.
	       And everywhere Mary went,
	       The lamb	was sure to go.

	       When the	-m option is specified mailbot ignores the locale's
	       character set and formats the autoreply according to the
	       character set read from the "Content-Type" header.

       -M address
	   Format the autoresponse as a	delivery status	notification (RFC
	   1894[2]).  address is an RFC	2822[1]	E-mail address that generates
	   the DSN. Note that the -A option should still be used in addition
	   to -M in order to set the From: header on the autoresponse.	-M
	   sets	the DSN	address	only. The -M option automatically sets -T

       -R type
	   Specify the feedback	report type, with type set to abuse, fraud,
	   other, or virus. Must be used together with "-T feedback" or	"-T

       -T format
	   Set the reply format.  format must be one of	the following values:

	   o   "reply" - the default reply format.

	   o   "replyall" - like "reply", except also puts the recipients in
	       the original message's "To:" and	"Cc:" headers into the "Cc:"
	       header of the generated reply.

	   o   "replydsn" - like "reply", except the message is	formatted as a
	       delivery	status notification.

	   o   "replydraft" - like "reply", with the text of the autoresponse
	       coming from a maildir specified by the -l option. See
	       "Autoreplies from a maildir folder", below.

	   o   "forward" - attach the original message as forwarded text.

	   o   "forwardatt" - attach the original message as a forwarded
	       message attachment.

	   o   "feedback" - generate an	Email Feedback Report message (see RFC
	       5965[3]). The "-R" option is required when this is specified.

	   o   "replyfeedback" - like "feedback", but also adds	a "To:"
	       header, addressed to the	original message's sender.

	   Do not quote	the contents of	the original message in	the message
	   created by "reply", "replyall", "replydsn", "feedback", and
	   "replyfeedback" options.

	       The original message gets quoted, in the	absence	of this
	       option, only if the original message was	formatted as plain
	       text.  mailbot is unable	to quote an original message which was
	       formatted as HTML, or any other non-plaintext format.

	       For "replydsn", "feedback", and "replyfeedback" options,	the
	       convention is to	attach the original message, or	only its
	       headers,	separately; so this option should always be specified
	       for these three reply formats.

	   Attach the entire message, for "replydsn", "feedback", and
	   "replyfeedback", instead of only its	headers.

	   Generate a reply ("reply"-formats) to the address listed in any
	   "Errors-To" or "Return-Path"	header,	if present, instead of the
	   "From" header.

       -S "salutation"
	   Use the given salutation in the "reply". The	default	value is "%F
	   writes:". The following substitutions are recognized	in the
	   salutation string:

	   o   %% - an explicit	% character.

	   o   %n - a newline character.

	   o   %C - the	"X-Newsgroup:" header from the original	message.

	   o   %N - the	"Newsgroups:" header from the original message.

	   o   %i - the	"Message-ID:" header from the original message.

	   o   %f - the	original message's sender's address.

	   o   %F - the	original message's sender's name.

	   o   %S - the	"Subject:" header from the original message

	   o   %d - the	original message's date, in the	local timezone.

	   o   %{...}d - use strftime()	to format the original message's date.
	       A plain %d is equivalent	to %{%a, %d %b %Y %H:%M:%S %z}d.

	   All other characters	in the salutation string are left as is.

       -F "marker"
	   When	generating a forward, use the marker to	separate the forwarded
	   message from	the autoreply text, instead of the default "---
	   Forwarded message ---"

       -r addrlist
	   addrlist is a comma-separated list of RFC 2822[1] E-mail addresses.
	   mailbot sends an autoresponse only if the original message has at
	   least one of	the specified addresses	in any To: or Cc: header.

       -d filename
	   Create a small database, filename, that keeps track of senders'
	   E-mail addresses, and prevent duplicate autoresponses going to the
	   same	address	(suppress autoresponses	going back to the same
	   senders, for	subsequent received messages). The -d option is	only
	   available if	maildrop has GDBM/DB extensions	enabled.

       -D x
	   Do not send duplicate autoresponses (see the	-d option) for at
	   least x days	(default: 1 day). The -d option	creates	a database of
	   E-mail addresses and	the times an autoresponse was last mailed to
	   them. Another autoresponse to the same address will not be mailed
	   until at least the amount of	time specified by the -D option	has

       -s "subject"
	   Set the Subject: header on the autoresponse to subject.

	   Show	the resulting message, do not send it. Used for	debugging

       --feedback-original-envelope-id "_envelopeid_",
       --feedback-original-mail-from "_mailfrom_",
       --feedback-reporting-mta	"dns; hostname",
       --feedback-source-ip aaa.bbb.ccc.ddd, --feedback-incidents n,
       --feedback-authentication-results "results",
       --feedback-original-rcpt-to "_rcptto_",
	   Optional parameters to include in the feedback report generated by
	   "feedback" and "replyfeedback".  mailbot always adds	"Arrival-Date"
	   with	the current time, as well as "Version" and "User-Agent".

	   "--feedback-authentication-results",	"--feedback-original-rcpt-to"
	   and "--feedback-reported-domain" may	be specified more than once.

	   Where appropriate, UTF-8 encoding should be used for	non-ASCII

       -l maildir
	   Specifies the maildir for the "-T replydraft" option. See
	   "Autoreplies	from a maildir folder",	below.

   Autoreplies from a maildir folder
       In .mailfilter:

	   cc "| mailbot -T replydraft -l './Maildir/.Vacation'	\
		   -d autoresponsedb \
		   -A 'From:' /usr/bin/sendmail	-f ''"
	   to "./Maildir"

       The -T replydraft reply format takes the	content	of the autoresponse
       from the	most recent message in a maildir. The -l option	specifies the
       maildir.	The above example takes	the message from $HOME/Maildir/.Drafts
       which should be a maildir (with the usual cur, new, and tmp
       subdirectories).	It would typically get created by Courier-IMAP as a
       folder named "Vacation".

       This makes it possible to install autoreplies via an IMAP client	by
       creating	a folder named "Vacation", and copying a message into it. The
       contents	of the message become the autoresponse.

       If the named maildir does not exist, or is empty, mailbot does nothing.
       If the named maildir has	more than one message, the most	recent message
       gets used.

       The above example uses additional mailbot options to suppress duplicate
       autoresponses, and to set the "From:" header on the autoresponse.

       maildrop(1)[4], reformail(1)[5],	reformime(1)[6].

       Sam Varshavchik

	1. RFC 2822

	2. RFC 1894

	3. RFC 5965

	4. maildrop(1)

	5. reformail(1)

	6. reformime(1)

Courier	Mail Server		  11/04/2020			    MAILBOT(1)


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