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Full Discussion: How mailx -r works?
Top Forums Shell Programming and Scripting How mailx -r works? Post 302832551 by kg_gaurav on Monday 15th of July 2013 06:40:16 AM
Old 07-15-2013
Question How mailx -r works?
I'm using Sun Solaris.
I used mailx -r "MyEmailId" -s "sub" "toEmailID" from my unix id and it worked.
But when i run the same script from other's unix id it works as well. mean any one in my environment can mail to other's email without my knowledge.
My questions are
  1. How it works and why it doesn't ask for authentication?
  2. Does it works for public emails (eg:gmail,yahoo etc) as well?
  3. Where and what one should implement security check to stop this?
 

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LEARN ABOUT DEBIAN

xen-list-images

XEN-LIST-IMAGES(8)					 Perl Programmers Reference Guide					XEN-LIST-IMAGES(8)

NAME

       xen-list-images - List all the created and configured Xen images.

SYNOPSIS

	 xen-list-image [options]

	 Help Options:
	  --help     Show this scripts help information.
	  --manual   Read this scripts manual.
	  --version  Show the version number and exit.

	 Testing options:
	  --test     Specify an alternate Xen configuration directory.

OPTIONS

       --help Show the scripts help information.
       --manual Read the manual.
       --test This flag causes the script to load the Xen configuration files from a different directory than the default of /etc/xen.
       --version Show the version number and exit.

DESCRIPTION

	 xen-list-images is a simple script which will display all the
	Xen images which have been created.

	 This works by iterating over all files matching the pattern
	/etc/xen/*.cfg which is what the xen-create-image script would
	create.

	 For each instance which has been created we'll display the name,
	and then either the IP address configured, or "DHCP" to denote
	a dynamic host.

TODO

	 It should be possible to determine the disk(s) used by the images,
	and then display their sizes.

AUTHORS

	Steve Kemp, http://www.steve.org.uk/
	StA~Xphane Jourdois

LICENSE

       Copyright (c) 2005-2009 by Steve Kemp, (c) 2010 by The Xen-Tools Development Team. All rights reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The LICENSE file contains the
       full text of the license.

4.3.1								    2012-06-30							XEN-LIST-IMAGES(8)
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