Email is sent but stuck in Outbox too.

[holybank]

Steps to reproduce

1. Add a new message
2. Send email
3. Mail is sent
4. Mail also stuck in Outbox

Expected behavior

Mail is sent and not stuck in Outbox

Actual behavior

Mail is sent and stuck in Outbox

Mail app version

3.6.0

Mailserver or service

Modoboa

Operating system

Ubuntu 22.04

PHP engine version

PHP 8.1

Web server

Nginx

Database

PostgreSQL

Additional info

browser console errors:

AvatarService.js:36
GET https://{host}/index.php/apps/mail/api/avatars/url/MAILER-DAEMON%40{domain} 404 (Not Found)
OutboxService.js:72
POST https://{host}/index.php/apps/mail/api/outbox/37 500 (Internal Server Error)
actions.js:134 [ERROR] mail: Failed to send message 37 from outbox
{app: 'mail', uid: '{user}', level: 2, error: a}
actions.js:182 [ERROR] mail: Could not delay-send message 37
{app: 'mail', uid: '{user}', level: 2, message: {…}}
vuex.esm.js:542 Uncaught (in promise)
a {message: 'Request failed with status code 500', name: 'AxiosError', code: 'ERR_BAD_RESPONSE', config: {…}, request: XMLHttpRequest, …}

NextCloud version 28.0.4.1

If you need any more information or logs, please tell me where to get such information too. I'm new to this.

[holybank]

This is the information from Admin Logging page.

[mail] Error: Could not send message: Error when communicating with the server.
POST /index.php/apps/mail/api/outbox/38
from {ip} by {user} at May 2, 2024, 10:49:07 AM

{"reqId":"3lqDbXk4dO7BvfSHFpAa","level":3,"time":"2024-05-02T03:49:07+00:00","remoteAddr":"{ip}","user":"{user}","app":"mail","method":"POST","url":"/index.php/apps/mail/api/outbox/38","message":"Could not send message: Error when communicating with the server.","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36","version":"28.0.4.1","exception":{"Exception":"OCA\Mail\Exception\ServiceException","Message":"Could not send message: Error when communicating with the server.","Code":2,"Trace":[{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":343,"function":"sendMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/OutboxService.php","line":142,"function":"sendLocalMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Controller/OutboxController.php","line":247,"function":"sendMessage","class":"OCA\Mail\Service\OutboxService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"send","class":"OCA\Mail\Controller\OutboxController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1069,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":39,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","Line":273,"Previous":{"Exception":"Horde_Mime_Exception","Message":"Error when communicating with the server.","Code":2,"Trace":[{"file":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Mail.php","line":479,"function":"send","class":"Horde_Mime_Part","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":271,"function":"send","class":"Horde_Mime_Mail","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":343,"function":"sendMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/OutboxService.php","line":142,"function":"sendLocalMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Controller/OutboxController.php","line":247,"function":"sendMessage","class":"OCA\Mail\Service\OutboxService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"send","class":"OCA\Mail\Controller\OutboxController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1069,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":39,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Part.php","Line":1642,"Previous":{"Exception":"Horde_Mail_Exception","Message":"Error when communicating with the server.","Code":2,"Trace":[{"file":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Part.php","line":1620,"function":"send","class":"Horde_Mail_Transport_Smtphorde","type":"->"},{"file":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Mail.php","line":479,"function":"send","class":"Horde_Mime_Part","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":271,"function":"send","class":"Horde_Mime_Mail","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":343,"function":"sendMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/OutboxService.php","line":142,"function":"sendLocalMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Controller/OutboxController.php","line":247,"function":"sendMessage","class":"OCA\Mail\Service\OutboxService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"send","class":"OCA\Mail\Controller\OutboxController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1069,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":39,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mail/lib/Horde/Mail/Transport/Smtphorde.php","Line":145,"Previous":{"Exception":"Horde_Smtp_Exception","Message":"Error when communicating with the server.","Code":2,"Trace":[{"file":"/var/www/nextcloud/apps/mail/vendor/nextcloud/horde-smtp/lib/Horde/Smtp.php","line":1046,"function":"read","class":"Horde_Smtp_Connection","type":"->"},{"file":"/var/www/nextcloud/apps/mail/vendor/nextcloud/horde-smtp/lib/Horde/Smtp.php","line":1112,"function":"_getResponse","class":"Horde_Smtp","type":"->"},{"file":"/var/www/nextcloud/apps/mail/vendor/nextcloud/horde-smtp/lib/Horde/Smtp.php","line":757,"function":"_processData","class":"Horde_Smtp","type":"->"},{"file":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mail/lib/Horde/Mail/Transport/Smtphorde.php","line":143,"function":"send","class":"Horde_Smtp","type":"->"},{"file":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Part.php","line":1620,"function":"send","class":"Horde_Mail_Transport_Smtphorde","type":"->"},{"file":"/var/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Mail.php","line":479,"function":"send","class":"Horde_Mime_Part","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":271,"function":"send","class":"Horde_Mime_Mail","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/MailTransmission.php","line":343,"function":"sendMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Service/OutboxService.php","line":142,"function":"sendLocalMessage","class":"OCA\Mail\Service\MailTransmission","type":"->"},{"file":"/var/www/nextcloud/apps/mail/lib/Controller/OutboxController.php","line":247,"function":"sendMessage","class":"OCA\Mail\Service\OutboxService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"send","class":"OCA\Mail\Controller\OutboxController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1069,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":39,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/mail/vendor/nextcloud/horde-smtp/lib/Horde/Smtp/Connection.php","Line":130}}},"message":"Could not send message: Error when communicating with the server.","exception":[],"CustomMessage":"Could not send message: Error when communicating with the server."},"id":"66330d3d4b9d9"}

[ChristophWurst]

Duplicate of #8435.

A fix is coming with v3.7.