sSMTP is a send-only sendmail emulator for Linux. It replaces sendmail, in place, but implements only send features.
Install and configure sSMTP¶
On QTS 5.X, sSMTP is already installed.
However, it is not the standard ssmtp binary:
- it doesn't support providing recipient as argument (ie. the standard
sendmail foo@bar.net). Recipients must be provided as header in the message:To: jane.doe@gmail.com Subject: This is a subject Did you receive this message? - the configuration file is not in standard location (
/etc/ssmtp/ssmtp.conf):/etc/config/ssmtp/ssmtp.conf
Configure sSMTP on TS-243E¶
Use the UI and QNAP's Notification center interface, add an email.
QNAP's QTS configures authentication with Gmail through Oauth token-based authentication.
This can't be achieved (to my knowledge) in command line, but this is more secure than an Application Password stored in plain text (see Configure sSMTP with Gmail on Ubuntu).