10 More Discussions You Might Find Interesting
1. Web Development
Okay, I have searched the forums and couldn't really find a topic on this, so I decided to start one. But I decided to start a ncurses discussion forum recently and one thing I noticed while getting it going is that when mail is sent out via Sendmail or PHP Mail, Gmail is /very/ slow to receive it.... (2 Replies)
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2. Proxy Server
PHP mail() function doesn't work.
Nor does sendmail:
loaded system configuration file /etc/msmtprc
ignoring user configuration file /home/xi/.msmtprc: No such file or directory
falling back to default account
using account default from /etc/msmtprc
host = xsi
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Discussion started by: Xcislav
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3. Shell Programming and Scripting
1.
I need to send emails using a shell script on linux. I want to use the most widespread method (the preferred method). Is one considered deprecated in favor of the other? Which, mail or sendmail ?
2.
Now, without trying to favor mail in the first question: How can I include a From: mail... (1 Reply)
Discussion started by: limmer
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4. UNIX for Advanced & Expert Users
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Discussion started by: Zhay
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5. Linux
Hello All,
i have configured sendmail and trying to set a limit on mail
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Discussion started by: saurabh84g
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6. Shell Programming and Scripting
Hi.
I have a script like so:
#!/bin/bash
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7. Solaris
Hello guys,
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8. UNIX for Dummies Questions & Answers
Write a nawk script that will produce the following report:
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-------------------------------------------------------------------------
NAME PHONE Jan | ... (5 Replies)
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9. UNIX for Dummies Questions & Answers
quick question.
I have a webserver that has various scripts for user registration and ect on it. I want to post (mail) these to myself - however I am a bit stuck on how to configure sendmail to do this.
The hosting partner that I use has provided me with the use of their relay to send on the... (1 Reply)
Discussion started by: warrend
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10. UNIX for Dummies Questions & Answers
Hi,
I am using sendmail 8.9.1 and trying to block email from certain domain/user. How could I do that? TQ (4 Replies)
Discussion started by: liyas
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SMRSH(8) System Manager's Manual SMRSH(8)
NAME
smrsh - restricted shell for sendmail
SYNOPSIS
smrsh -c command
DESCRIPTION
The smrsh program is intended as a replacement for sh for use in the ``prog'' mailer in sendmail(8) configuration files. It sharply limits
the commands that can be run using the ``|program'' syntax of sendmail in order to improve the over all security of your system. Briefly,
even if a ``bad guy'' can get sendmail to run a program without going through an alias or forward file, smrsh limits the set of programs
that he or she can execute.
Briefly, smrsh limits programs to be in a single directory, by default /usr/lib/sendmail.d/bin/ allowing the system administrator to choose
the set of acceptable commands, and to the shell builtin commands ``exec'', ``exit'', and ``echo''. It also rejects any commands with the
characters ``', `<', `>', `;', `$', `(', `)', `
' (carriage return), or `
' (newline) on the command line to prevent ``end run'' attacks.
It allows ``||'' and ``&&'' to enable commands like: ``"|exec /usr/local/bin/filter || exit 75"''
Initial pathnames on programs are stripped, so forwarding to ``/usr/bin/vacation'', ``/usr/bin/vacation'', ``/home/server/mydir/bin/vaca-
tion'', and ``vacation'' all actually forward to `/usr/lib/sendmail.d/bin/vacation''.
System administrators should be conservative about populating the /usr/lib/sendmail.d/bin/ directory. For example, a reasonable additions
is vacation(1), and the like. No matter how brow-beaten you may be, never include any shell or shell-like program (such as perl(1)) in the
/usr/lib/sendmail.d/bin/ directory. Note that this does not restrict the use of shell or perl scripts in the /usr/lib/sendmail.d/bin/
directory (using the ``#!'' syntax); it simply disallows execution of arbitrary programs. Also, including mail filtering programs such as
procmail(1) is a very bad idea. procmail(1) allows users to run arbitrary programs in their procmailrc(5).
COMPILATION
Compilation should be trivial on most systems. You may need to use -DSMRSH_PATH="path" to adjust the default search path (defaults to
``/bin:/usr/bin'') and/or -DSMRSH_CMDDIR="dir" to change the default program directory (defaults to ``/usr/lib/sendmail.d/bin/'').
FILES
/usr/lib/sendmail.d/bin/ - default directory for restricted programs on SuSE Linux
SEE ALSO
sendmail(8)
$Date: 2004/08/06 03:55:35 $ SMRSH(8)