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+Bugfix: Fix notifications service settings
+
+We've fixed two notifications service setting:
+- `NOTIFICATIONS_MACHINE_AUTH_API_KEY` was previously not picked up (only `OCIS_MACHINE_AUTH_API_KEY` was loaded)
+- If you used a email sender address in the format of the default value of `NOTIFICATIONS_SMTP_SENDER` no email could be send.
+
+https://github.com/owncloud/ocis/pull/4652