Syntax error when sending test message

[fcecagno]

It should be very simple to reproduce, not sure if it has been tested before.

[2015-12-18T19:22:26+00:00] INFO: Processing execute[sendmail_test] action run (sendmail-ses::default line 113)

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Error executing action `run` on resource 'execute[sendmail_test]'
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Mixlib::ShellOut::ShellCommandFailed
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Expected process to exit with [0], but received '2'
---- Begin output of echo 'Subject:trusty-ktxrhuo1_sendmail_test
This is a test email using ses.
'
| /usr/sbin/sendmail -f <source email address> <destination email address> ----
STDOUT: Subject:trusty-ktxrhuo1_sendmail_test
This is a test email using ses.
STDERR: sh: 4: Syntax error: "|" unexpected
---- End output of echo 'Subject:trusty-ktxrhuo1_sendmail_test
This is a test email using ses.
'
| /usr/sbin/sendmail -f <source email address> <destination email address> ----
Ran echo 'Subject:trusty-ktxrhuo1_sendmail_test
This is a test email using ses.
'
| /usr/sbin/sendmail -f <source email address> <destination email address> returned 2