Using sendmail from bash script for multiple recipients

Question

I'm running a bash script in cron to send mail to multiple recipients when a certain condition is met.

I've coded the variables like this:

subject="Subject" from="[email protected]" recipients="[email protected] [email protected]" mail="subject:$subject\nfrom:$from\nExample Message" 

And the actual sending:

echo -e $mail | /usr/sbin/sendmail "$recipients" 

The problem is that only [email protected] is receiving the email. How can I change this so all the recipients receive the email?

NOTE: The solution has to be with sendmail, I'm using jailshell and it seems to be the only available method

Answer 1

Try doing this :

recipients="[email protected],[email protected],[email protected]" 

And another approach, using shell here-doc :

/usr/sbin/sendmail "$recipients" <<EOF subject:$subject from:$from  Example Message EOF 

Be sure to separate the headers from the body with a blank line as per RFC 822.

Answer 2

Use option -t for sendmail.

in your case - echo -e $mail | /usr/sbin/sendmail -t and add yout Recepient list to message itself like To: [email protected] [email protected] right after the line From:.....

-t option means - Read message for recipients. To:, Cc:, and Bcc: lines will be scanned for recipient addresses. The Bcc: line will be deleted before transmission.