07-15-2013
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
- How it works and why it doesn't ask for authentication?
- Does it works for public emails (eg:gmail,yahoo etc) as well?
- Where and what one should implement security check to stop this?
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LEARN ABOUT CENTOS
reporter-mailx
REPORTER-MAILX(1) LIBREPORT MANUAL REPORTER-MAILX(1)
NAME
reporter-mailx - Sends contents of a problem directory via email.
SYNOPSIS
reporter-mailx [-v] -d DIR [-c CONFFILE]
DESCRIPTION
The tool reads a problem directory, composes an email message from the directory contents, and uses mailx to send the message to specified
recipient.
Properties of email messages can be specified in a configuration file, and via environment variables.
Configuration file
Configuration file contains entries in a format "Option = Value".
The options are:
Subject
The subject of the email message.
EmailFrom
The sender of the email message.
EmailTo
The recipient of the email message.
SendBinaryData
Use yes/true/on/1 to attach all binary files from the problem directory to the email. This can cause the emails to be very large.
Integration with ABRT events
reporter-mailx can be used as a reporter, to allow users report problems via email when they decide to do it. This usage is pre-configured
in /etc/libreport/events.d/mailx_event.conf:
EVENT=report_Mailx reporter-mailx
It can also be used to notify administrator automatically when a problem happens. When this is desired, modify the event configuration file
to run the tool on the post-create event:
EVENT=post-create reporter-mailx
OPTIONS
-d DIR
Path to problem directory.
-c CONFFILE
Path to configuration file. When used in ABRT event system, the file contains site-wide configuration. Users can change the values via
environment variables.
ENVIRONMENT VARIABLES
Environment variables take precedence over values provided in the configuration file.
Mailx_Subject
Subject of the email message.
Mailx_EmailFrom
Sender of the email message.
Mailx_EmailTo
Recipient of the email message. If nor the environment variable nor the corresponding option is defined, the message is send to
"root@localhost".
Mailx_SendBinaryData
Use yes/true/on/1 to attach all binary files from the problem directory to the email.
AUTHORS
o ABRT team
LIBREPORT 2.1.11 06/18/2014 REPORTER-MAILX(1)