Applicable to:
- Plesk for Linux
Symptoms
After the upgrade to Plesk version 18.0.45, Swiftmailer/Symfonymailer or Prestashop messages stopped working with the following error message:
PLESK_ERROR: PHP Fatal error: Uncaught Swift_TransportException: Expected response code 220 but got code "", with message "Unable to init new groups for user 'postfix': Operation not permitted System error 1: Operation not permitted
Cause
Product issue:
-
#PPPM-13584 "It is once again possible to send mail without authentication using the sendmail -bs command."
Fixed in:- Plesk Obsidian 16 August 2022 (Linux)
- Plesk Obsidian 25 July 2022 (Linux)
- Plesk Obsidian 20 July 2022 (Linux)
- Plesk Obsidian 01 June 2022 (Linux)
Resolution
Workaround
If update is not possible for some reason you may try the following
Replace "sendmail -bs" with "sendmail -t" in the website's code.
For example:
-
Connect to the server via SSH.
-
Use the command below to replace the the option:
# sed -i "s/sendmail -bs/sendmail -t/g" /var/www/vhosts/example.com/httpdocs/vendor/swiftmailer/swiftmailer/lib/classes/Swift/SendmailTransport.php
Note: It might be required to change all the 'sendmail -bs' instances in the website's code. Depending on the application, the code's location will vary from above.
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