Issue User Cron Script Send eMail

[cmak.fr]

Hello

I have a system user with a scheduled task, a "Run a command" task runs a bash script.
The .sh script is run in the chrooted environment as should and works well...
... but the part where it should send an email fails.

Here is the email send command (in script):

/bin/mail -s "The subject" "myrecipient@hismail.net" < $msgfile

This command works fine from root ssh but doesnt from user cron.
Maybe a chroot issue.
Could any one help ?

 

[cmak.fr]

i may use sendmail too
my question is : how to invoke the program ?

 

[Bitpalast]

You can't if the mail program is not part of the chrooted environment. Maybe this can help:
How to add new programs to a chrooted shell environment template?

 

[cmak.fr]

It succeed to add mail but not sendmail and can not send email:

[root@host~]# ./update_chroot.sh --add mail
Done! Do not forget to run 'Work/update_chroot.sh --apply domains...' to apply changes in chroot template to domains.
[root@host ~]# ./update_chroot.sh --add sendmail
Done! Do not forget to run 'Work/update_chroot.sh --apply domains...' to apply changes in chroot template to domains.
[root@host ~]# ./update_chroot.sh --apply all
Applying chrooted environment on mydomain.org: chrootmng: skipping suid or sgid file "/var/www/vhosts/chroot/usr/sbin/sendmail"


With the system user:

bash-4.2$ type mail
mail is hashed (/usr/bin/mail)
bash-4.2$ type sendmail
bash: type: sendmail: not found
bash-4.2$ echo "Testmail" | mail -s "a try" foo@bar.net
/usr/sbin/sendmail: No such file or directory
"//dead.letter" 9/220
. . . message not sent.
bash-4.2$ ##same if i invoke /usr/bin/mail


Curiosity:

[root@fhost ~]#ls -la /var/www/vhosts/chroot/usr/sbin
total 1132
drwxr-xr-x 2 root root 38 Apr 14 19:39 .
drwxr-xr-x 7 root root 68 Apr 14 19:39 ..
-rwxr-xr-x 2 root root 1065376 Apr 9 19:07 ldconfig
-r-sr-xr-x 1 root root 89336 Sep 27 2018 sendmail

 

[cmak.fr]

Up!

Did anybody need to have a user scheduled script send email?

 

[Ales]

Try adding something simpler, such as ssmtp.

 

[cmak.fr]

@Ales: i did try ssmtp. Quite same issue with guid


[root@host~] yum install ssmtp
...
Done !
[root@host~] ./update_chroot.sh --add ssmtp
'/usr/sbin/ssmtp' -> '/var/www/vhosts/chroot/usr/sbin/ssmtp'
Done! Do not forget to run './update_chroot.sh --apply domains...' to apply changes in chroot template to domains.
[root@host~] ./update_chroot.sh --apply all
[root@host~]# ls -lah /var/www/vhosts/chroot/sbin/
total 1,2M
drwxr-xr-x 2 root root 51 20 avril 05:47 .
drwxr-xr-x 7 root root 68 14 avril 19:39 ..
-rwxr-xr-x 2 root root 1,1M 9 avril 19:07 ldconfig
-r-sr-xr-x 1 root root 88K 27 sept. 2018 sendmail
-rwxr-sr-x 1 root mail 41K 30 oct. 2014 ssmtp


With the system user:

bash-4.2$ type ssmtp
bash: type: ssmtp: not found

 

[Ales]

I'd remove sendmail from the chroot, change ssmtp binary's permissions and add ssmtp again.

Also, a quick search reveals this (I'm not suggesting a ssmtp recompile, just putting this here as a resource when it comes to ssmtp and chroot).