Mail::Audit(3pm) User Contributed Perl Documentation Mail::Audit(3pm)
NAME
Mail::Audit - Library for creating easy mail filters
SYNOPSIS
use Mail::Audit; # or use Mail::Audit qw(...plugins...);
my $mail = Mail::Audit->new( emergency => "~/emergency_mbox");
$mail->pipe("listgate p5p") if $mail->from =~ /perl5-porters/;
$mail->accept("perl") if $mail->from =~ /perl/;
$mail->reject("We do not accept spam") if $mail->rblcheck();
$mail->ignore if $mail->subject =~ /boring/i;
$mail->noexit(1);
$mail->accept("~/Mail/Archive/%Y%m%d");
$mail->noexit(0);
$mail->accept()
DESCRIPTION
procmail is nasty. It has a tortuous and complicated recipe format, and I don't like it. I
wanted something flexible whereby I could filter my mail using Perl tests.
Mail::Audit was inspired by Tom Christiansen's audit_mail and deliverlib programs. It
allows a piece of email to be logged, examined, accepted into a mailbox, filtered, resent
elsewhere, rejected, replied to, and so on. It's designed to allow you to easily create
filter programs to stick in a .forward file or similar.
Mail::Audit groks MIME; when appropriate, it subclasses MIME::Entity. Read the
MIME::Tools man page for details.
CONSTRUCTOR
new
my $mail = Mail::Audit->new(%option)
The constructor reads a mail message from "STDIN" (or, if the "data" option is set,
from an array reference or \*GLOBref) and creates a "Mail::Audit" object from it.
Other options include the "accept", "reject" or "pipe" keys, which specify subroutine
references to override the methods with those names.
You are encouraged to specify an "emergency" argument and check for the appearance of
messages in that mailbox on a regular basis. If for any reason an "accept()" is
unsuccessful, the message will be saved to the "emergency" mailbox instead. If no
"emergency" mailbox is defined, messages will be deferred back to the MTA, where they
will show up in your mailq.
You may also specify "log => $logfile" to write a debugging log; you can set the
verbosity of the log with the "loglevel" key, on a scale of 1 to 4. If you specify a
log level without a log file, logging will be written to ~/mail-audit.log.
Usually, the delivery methods "accept", "pipe", and "resend" are final; Mail::Audit
will terminate when they are done. If you specify "noexit => 1", "Mail::Audit" will
not exit after completing the above actions, but continue running your script.
The "reject" delivery method is always final; "noexit" has no effect.
If you just want to print the message to STDOUT, $mail->print().
Percent (%) signs seen in arguments to "accept" and "pipe" do not undergo "strftime"
interpolation by default. If you want this, use the "interpolate_strftime" option.
You can override the "global" interpolate_strftime option by passing an overriding
option to "accept" and "pipe".
By default, MIME messages are automatically recognized and parsed. This is
potentially expensive; if you don't want MIME parsing, use the "nomime" option.
You can pass further MIME options in the "mimeoptions" variable: for example, if you
want to output_to_core (man MIME::Parser) set "mimeoptions =" {output_to_core=>1}>.
DELIVERY METHODS
accept
$mail->accept(\%option, @locations);
You can choose to accept the mail into a mailbox by calling the "accept" method; with
no argument, this accepts to /var/spool/mail/you. The mailbox is opened append-write,
then locked "LOCK_EX", the mail written and then the mailbox unlocked and closed. If
Mail::Audit sees that you have a maildir style system, where /var/spool/mail/you is a
directory, it'll deliver in maildir style. If the path you specify does not exist,
Mail::Audit will assume mbox, unless it ends in /, which means maildir.
If multiple maildirs are given, Mail::Audit will use hardlinks to deliver to them, so
that multiple hardlinks point to the same underlying file. (If the maildirs turn out
to be on multiple filesystems, you get multiple files.)
If you don't want the "new/cur/tmp" structure of a classical maildir, set the
one_for_all option, and you'll still get the unique filenames.
accept( dir1, dir2, ..., { one_for_all => 1 });
If you want "%" signs to be expanded according to strftime(3), you can pass "accept"
the option "interpolate_strftime":
accept( file1, file2, ..., { interpolate_strftime => 1 });
"interpolate_strftime" is not enabled by default for two reasons: backward
compatibility (though nobody I know has a % in any mail folder name) and username
interpolation: many people like to save messages by their correspondent's username,
and that username may contain a % sign. If you are one of these people, you should
$username =~ s/%/%%/g;
If your arguments contain "/", "accept" will create arbitarily deep subdirectories
accordingly. Untaint your input by saying
$username =~ s,/,-,g;
By default, "accept" is final; Mail::Audit will terminate after successfully accepting
the message. If you want to keep going, set "noexit". "accept" will return the
filename(s) that it saved to.
my @pathnames = accept(file1, file2, ..., { noexit => 1 });
my ($pathname) = accept(file1);
If for any reason "accept" is unable to write the message (eg. you're over quota),
Mail::Audit will attempt delivery to the "emergency" mailbox. If "accept" was called
with multiple destinations, the "emergency" action will only be taken if the message
couldn't be delivered to any of the desired destinations. By default the "emergency"
mailbox is set to the system mailbox. If we were unable to save to the emergency
mailbox, the message will be deferred back into the MTA's queue. This happens whether
or not "noexit" is set, so if you observe that some of your "accept"s somehow aren't
getting run, check your mailq.
If this isn't how you want local delivery to happen, you'll need to override this
method.
reject
$mail->reject($reason);
This rejects the email; it will be bounced back to the sender as undeliverable. If a
reason is given, this will be included in the bounce.
This is a final delivery method. The "noexit" option has no effect here.
resend
$mail->resend($address, \%option)
Reinjects the email in its entirety to another address, using SMTP.
This is a final delivery method. Set "noexit" if you want to keep going.
Other options are all optional, and include host, port, and debug; see "smtpsend" in
Mail::Internet
At this time this method is not overrideable by an argument to "new".
pipe
$mail->pipe($program)
This opens a pipe to an external program and feeds the mail to it.
This is a final delivery method. Set "noexit" if you want to keep going. If "noexit"
is set, the exit status of the pipe is returned.
ignore
$mail->ignore;
This merely ignores the email, dropping it into the bit bucket for eternity.
This is a final delivery method. Set "noexit" if you want to keep going. (Calling
ignore with "noexit" set is pretty pointless.)
reply
$mail->reply(%option);
Sends an autoreply to the sender of the message. Return value: the recipient address
of the reply.
Recognized content-related options are: from, subject, cc, bcc, body. The "To" field
defaults to the incoming message's "Reply-To" and "From" fields. "body" should be a
single multiline string.
Set the option "EVEN_IF_FROM_DAEMON" to send a reply even if the original message was
from some sort of automated agent. What that set, only X-Loop will stop loops.
If you use this method, use KillDups to keep track of who you've autoreplied to, so
you don't autoreply more than once.
use Mail::Audit qw(KillDups);
$mail->reply(body=>"I am on vacation") if not $self->killdups($mail->from);
"reply" is not considered a final delivery method, so execution will continue after
completion.
HEADER MANAGEMENT METHODS
get_header
get
my $header = $mail->get($header);
Retrieves the named header from the mail message.
add_header
put_header
$mail->add_header($header => $value);
Inserts a new header into the mail message with the given value. "put_header" is an
alias for this method.
replace_header
$mail->replace_header($header => $value);
Removes the old header, adds a new one.
delete_header
$mail->delete_header($header);
Guess.
MISCELLANEOUS METHODS
log
$mail->log($priority => $message);
This method logs the given message if $priority is greater than the loglevel given
during construction.
tidy
$mail->tidy;
Tidies up the email as per Mail::Internet. If the message is a MIME message, nothing
happens.
noexit
$mail->noexit($bool);
This method sets the value of "noexit". If "noexit" is true, final delivery methods
will not be considered final.
ATTRIBUTE METHODS
The following attributes correspond to fields in the mail:
o from
o to
o subject
o cc
o bcc
o received
o body
Returns a reference to an array of lines in the body of the email.
o header
Returns the header as a single string.
o is_mime
Am I a MIME message? If so, MIME::Entity methods apply. Otherwise, Mail::Internet
methods apply.
o from_mailer
Am I from a mailer-daemon? See procmailrc. This method returns the part of the
header that matched. This method's implementation of the pattern is not identical to
procmail's.
o from_daemon
Am I from any sort of daemon? See procmailrc. This method returns the part of the
header that matched. This method's implementation of the pattern is not identical to
procmail's.
LICENSE
The usual. This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
BUGS
Numerous and sometimes nasty. RJBS is working to eradicate them all.
<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Mail-Audit>
PERL EMAIL PROJECT
This module is maintained by the Perl Email Project, and is considered superseded by
Email::Filter.
<http://emailproject.perl.org/wiki/Mail::Audit>
CAVEATS
If your mailbox file in /var/spool/mail/ doesn't already exist, you may need to use your
standard system MDA to create it. After it's been created, Mail::Audit should be able to
append to it. Mail::Audit may not be able to create /var/spool/mail because programs run
from .forward don't inherit the special permissions needed to create files in that
directory.
AUTHORS
Simon Cozens <simon AT cpan.org> wrote versions 1 and 2.
Meng Weng Wong <mengwong AT pobox.com> turned a petite demure v2.0 into a raging bloated
v2.1, adding MIME support, emergency recovery, filename interpolation, and autoreply
features.
Ricardo SIGNES <rjbs AT cpan.org> took over after Meng and tried to tame the beast,
refactoring, documenting, and testing. Thanks to Listbox.com for sponsoring maintenance
of this module !
SEE ALSO
o <http://www.perl.com/pub/a/2001/07/17/mailfiltering.html>
o Mail::Internet
o Mail::SMTP
o Mail::Audit::List
o Mail::Audit::PGP
o Mail::Audit::MAPS
o Mail::Audit::KillDups
o Mail::Audit::Razor
o Mail::Audit::Vacation
perl v5.10.0 2008-04-17 Mail::Audit(3pm)
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