Separate Dovecot Index State from Maildir Storage
Keep Dovecot's mutable index, cache, and log files off the same filesystem as user Maildirs to protect quotas, backups, and restores.
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dovecotChoosing Between Maildir and sdbox for Dovecot Mail Storage
Compare Maildir and sdbox storage formats in Dovecot to solve inode exhaustion and performance degradation in high-volume mailboxes.
Choosing Dovecot’s Mail Storage: Maildir vs. mdbox/sdbox for High‑Volume Servers
When running a large mail server with thousands of users, the choice of storage format can affect performance, reliability, and maintenance. This post compares Dovecot’s Maildir, mdbox, and sdbox, shows how to convert between them, and explains the trade‑offs you should weigh before making decision.
Choosing a Dovecot Mailbox Storage Format: maildir vs mdbox vs dbox
A decision guide for Dovecot's mail_location: when maildir, mdbox, or dbox fits, with a comparison table, an mdbox configuration, and validation steps using doveadm.
Migrating to Dovecot's mdbox Storage for High-Volume Mailboxes
Migrate from Maildir to Dovecot's mdbox storage to solve inode exhaustion in high-volume mailbox setups. Follow these steps for configuration, verification, and rollback.
Dovecot stats plugin and mailbox format choice: which metrics justify moving from Maildir to mdbox?
Goal I want to use Dovecot's built-in statistics support (the stats plugin queried via doveadm) to measure an IMAP performance bottleneck before changing anything, and then use those measurements to decide whether our mailbox format should stay Maildir or move to mdbox. Assume Dovecot 2.3.x on a single host with local storage. Constraints and uncertainty The
Maildir++ vs. Dict Storage: Which Minimizes Duplicate Writes During Delivery Retries?
In high‑concurrency environments, Dovecot’s deliver daemon retries failed deliveries with exponential back‑off, while the indexer may concurrently retry mailbox operations. Because the Maildir specification does not provide atomic file‑creation primitives, a retry can race with an indexer or another delivery, potentially producing duplicate message files. Do