ssmtp sends as email attachment instead of body text

rukmeister · 05-06-2013, 08:13 AM

Hello,

I would really appreciate any help with this as I'm thoroughly stuck.

I've set up rkhunter to run as a cron job and then email any warnings etc using ssmtp via gmail with this script:

Code:

#!/bin/sh
(
/usr/local/bin/rkhunter --versioncheck
/usr/local/bin/rkhunter --update
/usr/local/bin/rkhunter --cronjob --report-warnings-only
) | /bin/mail -v -s 'rkhunter daily run' myemail@gmail.com

It all works ok, except that it sends the output as an attachment rather in the body.

It happens whether it is run via cron or within a normal shell.

I found a similar problem relating to encoding and tried piping it like this

Code:

[rkhunter outpu] | iconv -c -t UTF-8 | /bin/mail -v -s 'rkhunter daily run' myemail@gmail.com

but that didn't fix it either

/etc/environment has locale set to en_US

I tried setting locale within the scrip like this :

Code:

LOC="en_US"
export LC_ALL=$LOC

This sends text as the body in an email like you would expect:

Code:

echo 'some text' | /bin/mail -v -s 'UTF Test' myemail@gmail.com

and displays :
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

while the output from rkhunter shows this when sent:
Content-Type: application/octet-stream
Content-Transfer-Encoding: base64

rukmeister · 05-06-2013, 09:26 AM

Ok, a little unstuck now. Putting this up if it helps anyone else. I'm not sure if this is the right way to solve this but it works for now.

Changing the script to this works now

Code:

# send rkhunter output to a file
rkhunter --cronjob --report-warnings-only > /var/log/rkhuntercron.log

# Overwrite old sendthis.txt with file containing TO/FROM/SUBJECT info contained in mailtome.txt that ssmtp expects
cat /etc/cron.daily/mailtome.txt > /etc/cron.daily/sendthis.txt

# Append rkhunter output to sendthis.txt
cat /var/log/rkhuntercron.log >> /etc/cron.daily/sendthis.txt

# Send it with ssmtp
/usr/sbin/ssmtp myemail@gmail.com < /etc/cron.daily/sendthis.txt

In this case mailtome.txt should look like this :

Code:

To: myemail@gmail.com
From: root@myhost
Subject: rkhunter daily cron

However the following still sends it as an attachment! Arrggh! Why?

Code:

cat /var/log/rkhuntercron.log | mail -v -s 'rkhunter mail test' myemail@gmail.com

OUTPUT:

Code:

[<-] 220 mx.google.com ESMTP xxxxxxxxxxxxx.xx - gsmtp
[->] EHLO xxxxxxx.host@gmail.com
[<-] 250 ENHANCEDSTATUSCODES
[->] STARTTLS
[<-] 220 2.0.0 Ready to start TLS
[->] EHLO xxxxxxx.host@gmail.com
[<-] 250 ENHANCEDSTATUSCODES
[->] AUTH LOGIN
[<-] 334 xxxxxxxxxxx
[->] xxxxxxxxxxxxxxxx
[<-] 334 xxxxxxxxxxx
[<-] 235 2.7.0 Accepted
[->] MAIL FROM:<xxxxxxxxx.host@gmail.com>
[<-] 250 2.1.0 OK xxxxxxxxxx.xxx - gsmtp
[->] RCPT TO:<myemail@gmail.com>
[<-] 250 2.1.5 OK xxxxxxxxxxxxx.xx - gsmtp
[->] DATA
[<-] 354  Go ahead xxxxxxxxxx.xx - gsmtp
[->] Received: by xxxxxxxxx.host@gmail.com (sSMTP sendmail emulation); Mon,  6 May 2013 17:54:33 +0400
[->] From: "root" <xxxxxxxxxx.host@gmail.com>
[->] Date: Mon, 06 May 2013 17:54:33 +0400
[->] To: myemail@gmail.com
[->] Subject: rkhunter mail test
[->] User-Agent: Heirloom mailx 12.4 7/29/08
[->] MIME-Version: 1.0
[->] Content-Type: application/octet-stream
[->] Content-Transfer-Encoding: base64