Re: Configuring FreeBSD 6.2 to use sendmail for sending only


--- Derek Ragona <derek@xxxxxxxxxxxxxxxxxxxxxxxx>
wrote:

At 07:01 PM 8/30/2007, L Goodwin wrote:
Chuck, I'd prefer to have the script handle the
mailing so I can test the script (with email send)
manually, independent of cron.

Still looking for specifics on setting this up and
a
bourne shell script example that sends an email.
Thanks!

--- Chuck Swiger <cswiger@xxxxxxx> wrote:

On Aug 30, 2007, at 3:12 PM, L Goodwin wrote:
I wrote a shell script that backs up the file
server.
I would like to modify this script to email a
notification message to a public email
address.

Use cron, which will automatically email out the
results of your
script to any email address you like.

Seems like sendmail should do the job nicely,
but
I've never set it
up before.

What specific steps (including
network-specific)
need
to be performed to get sendmail working for
outgoing
mail only in a secure manner?

Please see the fine Handbook:




http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/mail.html

Although, it is entirely reasonable to consider
using Postfix instead.

--
-Chuck



Here is a sample script that you can use as a
template:
=======================================================
#!/bin/sh

#define any commands you will use
MAILFILE=mymailfile
MAILFILE2=mymailfile2
SENDTO=derek@xxxxxxxxxxxxxxxxxxxxxxxx
CCTO=derek@xxxxxxxxxxxxxxxxxxxxxxxx
MAIL=/usr/bin/mail
AWK=/usr/bin/awk
CAT=/bin/cat
TR=/usr/bin/tr
TEMPDIR=/tmp

#make sure we have paths
export PATH=$PATH:/usr/local/sbin:/usr/local/bin

cd $TEMPDIR
$CAT /etc/passwd | $AWK -F : '{ print $5 }' >
$MAILFILE
$TR -cd "\012-\172" < $MAILFILE > $MAILFILE2
$MAIL -s "My list of real user names subject"
$SENDTO -c $CCTO < $MAILFILE2
=======================================================

Derek, your example brings up another question.

Should I be calling "mail" or "sendmail", and which
mail or sendmail should I invoke if there is more than
one of either? Chuck's example calls sendmail in a
path that does not exist on my system (my sendmail is
in /usr/sbin/). I usually invoke whichever one is
first in my path.

One more question. Is it ok to run the script (and
send the email) as user root, or should I create a
user account with more limited permissions -- if so,
what limits should I set?



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