Post SMTP Plugin Causes Critical Error

  • Resolved nthn92

    (@nthn92)


    11 months, 2 weeks ago

    Hello,

    I’ve used the Post SMTP plugin since many years ago, and so far it works amazingly! However, since several days ago, some of the sites that I manage show a critical error message (with WP Debug on):

    Warning: require_once(/home/anuger68/public_html/wp-content/plugins/post-smtp/Postman/PostmanOptions.php): failed to open stream: Permission denied in /home/anuger68/public_html/wp-content/plugins/post-smtp/Postman/Postman.php on line 59

    Fatal error: require_once(): Failed opening required ‘PostmanOptions.php’ (include_path=’/home/anuger68/public_html/wp-content/plugins/post-smtp/includes/libs/HTMLPurifier:.:/opt/alt/php74/usr/share/pear’) in /home/anuger68/public_html/wp-content/plugins/post-smtp/Postman/Postman.php on line 59

    (screenshot: https://prnt.sc/hOhYQJ2Brz5m).

    The error goes away if I manually delete the Post SMTP plugin folder from cPanel.

    Please advise on how to solve this issue. Many thanks before!

    Regards,
    Nathan

    • This topic was modified 11 months, 2 weeks ago by nthn92.

    The page I need help with: [log in to see the link]

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support M Aqib Khan

    (@aqibkhan9)

    11 months, 2 weeks ago

    Hello @nthn92,

    I hope this message finds you well.

    Thank you for reaching out to our Support team. The error you’re experiencing indicates that the PostmanOptions.php file within the Post SMTP plugin is currently inaccessible due to file permission restrictions on your server.

    As a first step, we recommend reinstalling the plugin:

    • Deactivate and delete the existing Post SMTP plugin
    • Then reinstall and activate it from the WordPress plugin repository

    This may help reset any incorrect permissions and resolve the warning.

    If the issue persists after reinstallation, we kindly suggest reaching out to your hosting provider’s support team, as they will be better equipped to adjust server-level permissions and ownership settings.

    Warm regards,
    Support Team – WP Experts

    boyann

    (@boyann)

    11 months, 1 week ago

    [17-Jun-2025 06:37:20 UTC] PHP Fatal error:  Uncaught Error: Call to a member function getFromEmailAddress() on null in /public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMail.php:166
    Stack trace:
    #0 /public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMail.php(149): PostmanWpMail->createNewMessage()
    #1 /public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMail.php(50): PostmanWpMail->processWpMailCall('test@website....', 'Invoice 15603 f...', '{"requestedBy":...', '', Array)
    #2 /public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php(149): PostmanWpMail->send('test@website....', 'Invoice 15603 f...', '{"requestedBy":...', '', Array)
    #3 /public_html/wp-content/plugins/rcp-addon/includes/class-purs.php(161): wp_mail('test@website....', 'Invoice 15603 f...', '{"requestedBy":...')
    #4 website.com/pu in /public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMail.php on line 166

    Hello,

    First, I want to thank you for this great plugin that works really great!
    But lately I’m getting the error above, and I’m not sure if I should open another ticket or if I’m at the right place, since it is a Fatal Error message.
    The new version isn’t working as it worked with the previous v3.1.3. and this is the error I’m getting.

    Any recommendations?

    • This reply was modified 11 months, 1 week ago by boyann.
    Plugin Support M Aqib Khan

    (@aqibkhan9)

    11 months, 1 week ago

    Hello @nthn92

    We hope this message finds you well.

    Thank you for reaching out to our Support team. We’re truly sorry to hear that you’ve encountered this issue, this is certainly not the experience we aim to provide.

    I’ve forwarded the details to our technical team for further analysis. I will get back to you as soon as I receive their response or if we require any additional information from your end.

    We truly appreciate your patience and cooperation throughout this process. If you have any questions or concerns in the meantime, please don’t hesitate to reach out.

    Warm regards,
    Support Team – WP Experts

    Thread Starter nthn92

    (@nthn92)

    11 months, 1 week ago

    Hello @aqibkhan9

    I have tried reinstalling the plugin. At first, the fatal error was gone, but after a few days, the same issue reappeared.

    You suggested to contact my hosting provider regarding the file permission restrictions. Could you please be more specific about what I should tell my hosting provider?

    Thank you in advance.

    Best regards,
    Nathan

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Post SMTP Plugin Causes Critical Error’ is closed to new replies.