no email notification on Nextcloud 17 (docker)

[xan-it]

Steps to reproduce

1. folder of user A ist shared with group
2. an user B of this group has email notifications on shared files enabled
3. user A creates/uploads a text file in the shared folder

Expected behaviour

user B should get an email notification of the activity

Actual behaviour

user B dont get an email. It doesnt matter which notification delay ist enabled (asap, hourly, daily, weekly). The activity entry is generated in table oc_activity_mq. Calling the webcron also doesnt send the email. The only way to send the email is to start the command "occ activity:send-mails".

Server configuration

Operating system: Ubuntu 18.04 LTS with Docker 18.09.7 and official image "nextcloud:17"

Web server: Apache 2.4.38

Database: Mariadb 10.3

PHP version: 7.3.16

Nextcloud version: (see Nextcloud admin page) 17.0.5

Where did you install Nextcloud from: official docker image on docker hub "nextcloud:17"

Signing status: No errors have been found.

List of activated apps:

• accessibility: 1.3.0
• activity: 2.10.1
• admin_audit: 1.7.0
• bruteforcesettings: 1.6.0
• cloud_federation_api: 1.0.0
• data_request: 1.4.0
• dav: 1.13.0
• federatedfilesharing: 1.7.0
• files: 1.12.0
• files_downloadactivity: 1.6.0
• files_pdfviewer: 1.6.0
• files_rightclick: 0.15.1
• files_sharing: 1.9.0
• files_trashbin: 1.7.0
• files_versions: 1.10.0
• files_videoplayer: 1.6.0
• firstrunwizard: 2.6.0
• gallery: 18.4.0
• groupfolders: 5.0.7
• logreader: 2.2.0
• lookup_server_connector: 1.5.0
• nextcloud_announcements: 1.6.0
• notifications: 2.5.0
• oauth2: 1.5.0
• password_policy: 1.7.0
• privacy: 1.1.0
• provisioning_api: 1.7.0
• recommendations: 0.5.0
• richdocuments: 3.5.3
• serverinfo: 1.7.0
• support: 1.0.1
• systemtags: 1.7.0
• text: 1.1.1
• twofactor_backupcodes: 1.6.0
• updatenotification: 1.7.0
• viewer: 1.2.0
• workflowengine: 1.7.0

Nextcloud configuration: { "system": { "instanceid": "REMOVED SENSITIVE VALUE", "passwordsalt": "REMOVED SENSITIVE VALUE", "secret": "REMOVED SENSITIVE VALUE", "trusted_domains": [ "localhost", "dockerhost", "cloud.xxxxxxxxxxxxxx.com" ], "datadirectory": "REMOVED SENSITIVE VALUE", "overwrite.cli.url": "https://cloud.brillhygiene.com", "overwritehost": "cloud.brillhygiene.com", "overwriteprotocol": "https", "proxy": "", "dbtype": "mysql", "version": "17.0.5.0", "dbname": "REMOVED SENSITIVE VALUE", "dbhost": "REMOVED SENSITIVE VALUE", "dbport": "", "dbtableprefix": "oc_", "mysql.utf8mb4": true, "dbuser": "REMOVED SENSITIVE VALUE", "dbpassword": "REMOVED SENSITIVE VALUE", "installed": true, "htaccess.RewriteBase": "/", "loglevel": 1, "maintenance": false, "theme": "DBP", "skeletondirectory": "", "memcache.local": "\OC\Memcache\APCu", "memcache.locking": "\OC\Memcache\Redis", "redis": { "host": "REMOVED SENSITIVE VALUE", "port": 6379 }, "trashbin_retention_obligation": "7,14", "versions_retention_obligation": "2,4", "updater.release.channel": "stable", "mail_smtpdebug": true, "mail_smtpmode": "smtp", "mail_smtpauthtype": "LOGIN", "mail_smtpsecure": "tls", "mail_sendmailmode": "smtp", "mail_smtpauth": 1, "mail_smtpname": "REMOVED SENSITIVE VALUE", "mail_smtppassword": "REMOVED SENSITIVE VALUE", "mail_from_address": "REMOVED SENSITIVE VALUE", "mail_domain": "REMOVED SENSITIVE VALUE", "mail_smtphost": "REMOVED SENSITIVE VALUE", "mail_smtpport": "587", "mail_template_class": "OCA\EmailTemplateXAN\EMailTemplate", "activity_expire_days": 7, "apps_paths": [ { "path": "/var/www/html/apps", "url": "/apps", "writable": false }, { "path": "/var/www/html/custom_apps", "url": "/custom_apps", "writable": true } ] } }