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The backup procedure for Stalwart Mail Server varies depending on the chosen database and blob storage backend. Ensuring regular backups of your data will minimize the risk of data loss and aid in recovery in case of accidental deletion or system failures.

Database backup

The database primarily stores settings, indexes, and various forms of metadata. To backup your database:

  • If you're using the SQLite backend, you have a couple of options. You could use Litestream, which is an external tool designed for automatic SQLite database replication. Alternatively, you can directly back up your SQLite database by executing the .backup backup_file.sqlite3 command within the SQLite console.
  • If FoundationDB is your chosen backend, please refer to the Backup, Restore, and Replication for Disaster Recovery section of the FoundationDB documentation.

Blob storage backups

The blob store is where emails and other binary data, such as Sieve scripts, are stored. To backup your blob store:

  • If you're utilizing local storage, ensure to regularly back up the directory specified in the configuration attribute. This will store a copy of all the emails and other blobs.
  • If you're using S3-compatible storage, please refer to your S3 storage provider's instructions on backing up data. Different providers may offer various tools or methods for backing up data stored in their systems.