Fixing PaperlessNGX Email Processing Issues After Restart
When running PaperlessNGX in Docker, I encountered an issue where certain emails were not processed after restarting the Paperless container in the middle of a batch processing operation. Paperless saw the emails in the inbox but incorrect
ly marked them as already processed.
Identifying the Issue
The first step to diagnose the issue was to check the mail.log
file within Paperless. The log provided information on which emails were skipped from processing, including their unique IDs. For example:
[2025-02-17 09:50:03,084] [DEBUG] [paperless_mail] Skipping mail '321' subject 'Email from Epson WF-4830 Series' from 'scanner@example.com', already processed.
Logging into the Database
To access the Paperless database running inside a Docker container, I used the following command:
docker compose exec db /bin/bash
This command opens a bash shell inside the db
service container, allowing further interaction with PostgreSQL.
Resolving the Issue
To resolve the issue, I connected to the Paperless database, which was running on PostgreSQL. Using the provided email UID from the mail.log
, I deleted the corresponding entries from the paperless_mail_processedmail
table to allow Paperless to process the email again.
psql -U paperless_db_user
Here’s the SQL command I used:
DELETE FROM paperless_mail_processedmail WHERE uid = '322';
After running this command for every of the reported mails that are skipped, Paperless successfully reprocessed the emails during the next processing cycle.
Conclusion
If you encounter similar issues with PaperlessNGX not processing certain emails after a restart, checking the mail.log
and manually deleting the processed mail entries from the database can be an effective solution.