Wayne Hayes
3a9819c3ee
LESSONS.md gains 8-12: container has no IPv6 (AAAA fails before A, no fallback), host IPv6 != container IPv6, VPS blocks all outbound SMTP ports (relay over tailnet), sidecar needs a source ACL grant to initiate, and MtaRoute changes only take effect on restart. CLAUDE.md and .env.example warn that the smarthost address must be an IPv4 literal or tailnet IP, never a dual-stack hostname. acl-snippet adds the tag:stalwart -> tag:mail outbound grant. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
33 lines
1.7 KiB
Plaintext
33 lines
1.7 KiB
Plaintext
// tailwart — merge into your live Tailscale policy (admin console).
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// Snippet, not a full policy. Kept here so an upstream pull of any other repo
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// can't clobber it.
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// 1) tagOwners — add (self-ownership required for auth-key node creation):
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// "tag:stalwart": ["autogroup:admin", "tag:stalwart"],
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// 2) grants — Stalwart reaches the three shared backends:
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{ "src": ["tag:stalwart"], "dst": ["tag:db-postgres"], "ip": ["tcp:5432"] },
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{ "src": ["tag:stalwart"], "dst": ["tag:db-redis"], "ip": ["tcp:6379"] },
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{ "src": ["tag:stalwart"], "dst": ["tag:garage"], "ip": ["tcp:3900"] },
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// 3) grants — the edge proxy (tag:reverse-proxy) reaches the mailbox ports.
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// 8080 is the JMAP/admin HTTP tier (fronted by the main L7 Caddy).
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// 443 is Stalwart's HTTPS web listener; the edge L4-proxies the public
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// mta-sts/autoconfig/autodiscover SNIs to it (Stalwart terminates TLS with
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// its wildcard cert). PROXY protocol v2, same as the mail ports.
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{
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"src": ["tag:reverse-proxy"],
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"dst": ["tag:stalwart"],
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"ip": ["tcp:25", "tcp:465", "tcp:587", "tcp:143", "tcp:993", "tcp:443", "tcp:8080"],
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},
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// 4) grant — Stalwart initiates outbound relay to the smarthost (tag:mail).
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// Without this, the sidecar can RECEIVE but cannot INITIATE over the tailnet
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// (default-deny; the KVM host is a different identity and won't mask this).
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// Adjust dst/port to match your smarthost's tag and submission port.
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{ "src": ["tag:stalwart"], "dst": ["tag:mail"], "ip": ["tcp:587"] },
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// 5) admin console (not this file): assign tag:stalwart to the same OAuth
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// client federatedSocial uses, on the Devices/Core + Keys/AuthKeys scopes.
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// Missing → 403 "calling actor does not have enough permissions" at boot.
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