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Disable Outgoing Mail

 
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Old 10-28-2008
Disable Outgoing Mail
I have a Solaris 2.6 server running sendmail (Version 8.9.3p2). It actually receives email and runs the sendmail process. I need to configure it so that it continues to receive email, but disable its ability to send email out. My initial ideas was to just rename the mail and mailx binaries. But then I thought that might be a little too ugly. I then did some research and found that I could change a parameter called “DeliveryMode” to “deferred”. Apparently, this will withhold outgoing email. From there, I believe I could just create a cron job that would rm the contents of /var/spool/mqueue every couple of hours or so.

Can you tell me if this would thoroughly prevent email from going out? Or if there is a better way to do this?

The thought also occurred to me that I could alter outgoing mail so that ALL of it is directed to /dev/null or to a dummy email address (which is valid, but is really just another way to route to /dev/null). Is there a way to do this? Possibly using some config of the /etc/mail/aliases file?


Thank you very much for your assistance,
Rosko
 
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LEARN ABOUT DEBIAN

mail::mboxparser::mail::convertable

MboxParser::Mail::Convertable(3pm)			User Contributed Perl Documentation			MboxParser::Mail::Convertable(3pm)

NAME

       Mail::MboxParser::Mail::Convertable - convert mail for sending etc.

SYNOPSIS

	   use Mail::MboxParser;

	   [...]

	   # $msg is a Mail::MboxParser::Mail-object
	   my $mail = $msg->make_convertable;

	   $mail->delete_from_header('date', 'message-id');
	   $mail->replace_in_header('to', 'john.doe@foobar.com');
	   $mail->add_to_header( ['cc', 'john.does.brother@foobar.com'],
				 where => 'BEHIND' );
	   $mail->send('sendmail');

DESCRIPTION

       This class adds means to convert an email object into something that could be send via SMTP, NNTP or dumped to a file or filehandle.
       Therefore, methods are provided that change the structure of an email which includes adding and removing of header-fields, MIME-parts etc
       and transforming them into objects of related modules.

       Currently, only basic manipulation of the header and sending using Mail::Mailer is provided. More is to come soon.

       This class works non-destructive. You first create a Convertable-object and do any modifications on this while the Mail-object from which
       it was derived will not be touched.

METHODS

       delete_from_header(header-fields)
	   Given a list of header-field names, these fields will be removed from the header. If you want to re-send a message, you could for
	   instance remove the cc-field cause otherwise the message would be carbon-copied to the addresses listed in the cc-field.

       add_to_header(array-ref)
       add_to_header(array-ref, where => 'BEFORE' | 'BEHIND')
	   add_to_header() takes a reference to a two-element list whose first element specifies the header-field to add or to add to while the
	   second elements specifies the data that should be added. 'where' specifies whether to add at the beginning or at the end of the header.
	   Defaults to 'BEHIND' if not given.

       replace_in_header(header-field, new_data)
	   First element must be the header-field to be replaced while the second argument must be a string indicating what will be the new
	   content of the header-field.

       send(command, args)
	   Literally inherited from Mail::Internet. Commands can be "mail" (using the UNIX-mail program), "sendmail" (using a configured sendmail
	   or compatible MTA like exim), "smtp" (for using Net::SMTP) and "test" which will only display what would be sent using /bin/echo.
	   Additional arguments will be passed on to Mail::Mailer->new() which is in fact what Mail::Internet->send() uses.

	   For more details, see Mail::Mailer

VERSION

       This is version 0.55.

AUTHOR AND COPYRIGHT

       Tassilo von Parseval <tassilo.von.parseval@rwth-aachen.de>

       Copyright (c)  2001-2005 Tassilo von Parseval.  This program is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

SEE ALSO

       Mail::Internet, Mail::Mailer

perl v5.12.3							    2005-12-08					MboxParser::Mail::Convertable(3pm)