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Man Pages


Manual Reference Pages  -  REFORMAIL (1)

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NAME

reformail - E-mail reformatting tool

CONTENTS

SYNOPSIS

reformail -s command [option...]
reformail -D len filename
reformail -x header:...
reformail -X header:...
reformail [options...]

See below for additional options

DESCRIPTION

The reformail program reads a message on standard input, reformats it in some way, and writes the message to standard output:

    Splitting mailboxes into individual messages

The -s option splits the mbox-formatted mailbox file on standard input into individual messages. An external program is executed for each message. The contents of each individual message will be provided to the external program on standard input.

If the FILENO environment variable is set to a number, reformail will consecutively increment FILENO each time the program is executed for each individual message.

If FILENO is not set, its initial value will be "000". If FILENO is set to a non-numeric value, FILENO will remain unchanged.

    Detecting duplicate messages

The -D option implements a simple way to delete duplicate messages in incoming mail. filename is a file that will be approximately len bytes long. This file will be used by reformail to save message IDs seen in recent mail. reformail reads the message on standard input. If the message has a Message-ID: header thats already in the cache file, reformail terminates with the exit code set to 0. Otherwise, reformail terminates with the exit code set to 1.

Note

Unlike a similar feature in the formail command, reformail takes care of locking the file, so its not necessary to implement your own locking mechanism for this option.

    Extracting headers

The -x and -X options extract the indicated headers from the message, and print them to standard output. Multiple -x and -X options can be specified at the same time, and may be intermixed.

The -x option extracts and prints the contents of the header. The -X option prints the name of the header as well.

In all other situations, reformail copies the message on its standard input to its standard output, reformatting the message as follows:

OPTIONS

-aheader: value

Append a custom header to the message if this header does not already exist. If the header is either Message-ID: or Resent-Message-ID: and the value is empty, reformail generates a (hopefully) unique message ID for you.

-Aheader: value

Append a custom header to the message even if this header already exists. If the header is either Message-ID: or Resent-Message-ID: and the value is empty, reformail generates a (hopefully) unique message ID for you.

-c

Concatenate multi-line headers. Headers split on multiple lines are combined into a single line.

-dn

If n is 1, each line will be terminated with CRLF. If n is 0 (default), each line will be terminated with LF. reformail reads a message with either line terminator, and will force the message to have the specified line termination.

-f0

Any initial blank lines are removed. If the first non-blank line is a "From_" line, it gets converted to a "Return-Path:" header, and any existing "Return-Path:" header gets removed. If the message does not start with a "From_" line, the message remains unchanged.

-f1

Add the "From_" line to the message, if its not there. reformail will attempt to generate the "From_" line from any Errors-To:, Return-Path:, or From: headers in the message. "root" will be used if reformail is unable to determine the return address.

-iheader: value

Appends a custom header to the message. If this header already exists it is renamed by prepending "Old-" to the name of the header.

-Iheader: value

Append a custom header to the message. If this header already exists in the message, the old header is completely removed. If the value is empty, any existing header is completely removed, and nothing gets appended.

-R oldheader: newheader:

Rename the indicated header.

-uheader:

If this header occurs multiple times in the message, remove all occurrences except the first one.

-Uheader:

If this header occurs multiple times in the message, remove all occurrences except the last one.

AUTOREPLIES

The autoreply options from earlier versions of mailbot have been moved into \m[blue]mailbot(1)\m[][1].

BUGS

For the -a, -A, and -I options, a space after the header name and the colon is considered to be a non-empty field.

Do not provide the same header to more than one family of header-modifying options, such as -u/-U and -a/-A. Doing so yields unpredictable results. Its better to run reformail several times (use a pipe, perhaps).

SEE ALSO

\m[blue]courier(8)\m[][2], sendmail(8), \m[blue]mailbot(1)\m[][1], \m[blue]maildrop(1)\m[][3].

AUTHOR

Sam Varshavchik

Author

NOTES

1. mailbot(1)  http://www.courier-mta.org/maildrop/mailbot.html
2. courier(8)  http://www.courier-mta.org/maildrop/courier.html
3. maildrop(1)  http://www.courier-mta.org/maildrop/maildrop.html
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Courier Mail Server REFORMAIL (1) 06/20/2015

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