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One container providing SMTP/IMAP/POP3/JMAP plus CalDAV/CardDAV, an admin UI and spam filtering — chosen over mailcow (owns its own installer, which is what killed the earlier attempt now sitting in scripts/unused/) and over Mailu (~7 containers) because a single image with a single data dir is the only shape that fits the existing conventions cleanly: one anchor service the updater can version, one path the backup engine can snapshot. Mail-specific departures from the usual app template, each deliberate: * Ports are FIXED, not random. Other mail servers connect to :25 by number and clients expect 465/587/993 — a randomised external port would silently make the server unreachable. Only the admin UI takes a random port, since that one really is just a browser behind Traefik. 143/995/4190/443 ship disabled; the port processor comments them out. * UPDATE_TYPE=manual and the image pinned to v0.16, not :latest. Stalwart is pre-1.0 and has said the storage schema is still being finalised, so an unattended minor bump could carry a data migration on the message store. This is the one app where the auto default is wrong. * BACKUP_STRATEGY=stop-snapshot-start. The message store is written continuously; a live copy can land mid-transaction. Seconds of queued delivery (senders retry) buys a consistent snapshot. * The install hook checks outbound port 25 and reverse DNS, then prints the MX/SPF/DMARC records with real values. A mail server whose container started is not a working mail server, and every remaining requirement lives at the registrar or the VPS provider. Admin credentials are seeded via STALWART_RECOVERY_ADMIN from the app config rather than left to Stalwart's first-run random password, which would otherwise exist only in the container log. Icon is a drawn placeholder, not the upstream trademark. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
12 lines
772 B
XML
12 lines
772 B
XML
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48" width="48" height="48" role="img" aria-label="Stalwart Mail Server">
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<!-- Placeholder mark: a shield (stalwart) around an envelope (mail), drawn
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rather than copied so no upstream trademark is vendored into the repo.
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Swap for the official logo if the project's brand terms allow it. -->
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<path d="M24 3 40 8v14c0 10-6.6 18.6-16 23C14.6 40.6 8 32 8 22V8z"
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fill="none" stroke="#2f6fed" stroke-width="2.5" stroke-linejoin="round"/>
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<rect x="14" y="17" width="20" height="14" rx="2"
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fill="none" stroke="#2f6fed" stroke-width="2.5"/>
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<path d="M14.5 18.5 24 26l9.5-7.5"
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fill="none" stroke="#2f6fed" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"/>
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</svg>
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