The tenant switch. A tenant's administrator turns legacy mail protocols
off for its own tenant, and from then on sign-in over IMAP, POP3,
ManageSieve and SMTP AUTH is refused for every address on the tenant's
domains, while every other domain on the server carries on. No port
closes, since other tenants share them (LP-13): it is one stored fact per
tenant, read at sign-in and when client configuration is answered.
inbuxa:TenantProtocolPolicy/get and /set, one per tenant, id the tenant's:
- Inside a tenant, a principal reaches only its own tenant's switch
(MT-1): /get with no ids answers with it, another tenant's is notFound
and can't be changed. At server level /get with no ids lists every
tenant's.
- Turning it off is always allowed. Turning it back on is refused with
forbidden, naming inbuxa:ProtocolPolicy, while the server has legacy
protocols off (LP-9).
- A change raises security.legacy-protocols-changed with policy = tenant,
the tenant's id, the new value and who made it (LP-14).
- It takes sysDomainGet and sysDomainUpdate, not the two new permissions
the spec names. The switch governs sign-in on the tenant's domains, so
whoever manages those domains may turn it -- and the default Tenant
Administrator role already holds both, where new permissions would reach
no role already stored on a server (MT-12's note), leaving today's
tenant administrators without the switch until someone edited their
role by hand. The same trade inbuxa:AiLimits and inbuxa:ProtocolPolicy
made. /query is not built yet; /get with no ids covers listing.
Sign-in (LP-10 to LP-12). Before the credentials are looked at, the name
given is resolved to its domain and the domain to its tenant, so a real
account and a made-up address on the domain get the same refusal, with a
right password or a wrong one, counted as no failed sign-in (LP-11). The
words are the spec's: "Your organization allows only INBUXA webmail and
JMAP apps...", in each protocol's form. A bearer token needn't name an
account, so after authentication the account's own tenant is checked too;
a token that named nobody can't slip past.
The refusal carries policy = tenant and the domain, not the tenant's id:
IMAP answers a command's tag from the Id key, so an error holding one was
sent under the wrong tag and the mail app hung waiting for its reply. The
first live run found that; a unit test now holds the refusal to it.
Client configuration (LP-14a). Autoconfig, autodiscover, PACC and the
suggested DNS records now ask whether legacy services are off for the
domain being answered for -- the server's switch, or the domain's
tenant's -- so a tenant's domains stop offering IMAP, POP3 and
submission while others still do.
tests/e2e/legacy_protocols.py builds a tenant with its own domain, a user
and a tenant administrator, and a second tenant, and proves on a running
server: the admin sees and changes only its own tenant's switch (test 10);
turning it off is an event (test 14); the tenant's user is refused over
IMAP with the right password and a wrong one, a made-up address on the
domain the same (tests 6, 7); POP3 and submission refuse in their own
forms and JMAP still works (test 8); an account on another domain signs in
normally (test 6); autoconfig drops IMAP for the tenant's domain only; with
the server off, the tenant can't turn it back on (test 9); and once back
on, the user signs in again. All 62 checks pass.
John, 2026-09-20: "SMTP and JMAP should be shown with the selector locked,
we want to prevent those two protocols from being shutdown for now."
The selector lists every mail protocol the server speaks, so the operator
sees the whole surface at once; SMTP and JMAP sit in it named and visibly
not switchable. JMAP was never closeable -- closing it locks everyone out
of their mail and the operator out of INBUXA Admin, with no way back but
the host -- and is now visibly so. SMTP is locked whole. LP-3 already
spared inbound on 25; this extends that to submission on 465 and 587,
which LP-1 would otherwise have closed by default.
So closeSubmission has no effect while the lock stands, and is forced to
false. A client that asks for true is not refused: the value is recorded,
overruled, and the overrule reported, because the field is specified and
the lock is meant to be temporary. is_locked() is consulted before
anything else in closes(), so no phrasing of a request reaches past it.
This costs the feature nothing. Submission's ports stay open and sign-in
over them is still refused once LP-6 lands, which is the case acceptance
test 2 already described: a mail app reaching 465 is told it cannot sign
in rather than finding nothing listening. The operator also keeps a port
they may well be forwarding, which is the LP-20 problem in miniature.
The locked set is a server constant the front ends read, not a list they
carry, so unlocking later is a server change and no admin release. The
LP-3 tests stay as they are, to keep it covered if the lock is lifted.
Recorded as LP-21, with acceptance tests 17 and 18.
LP-1 and LP-5, the registry half. close() removes every listener object
the policy closes, saving each one whole first; reopen() puts them back.
The switch removes the listener objects, not just their sockets. A stopped
socket returns on the next restart, which would reopen every port the
operator had just closed, and the operator would have no way to know. A
removed object stays removed, and a server that boots with the switch on
never spawns those listeners at all -- so there is no boot-time special
case to write or to forget.
LP-3 is decided here, on the object rather than the running socket, and
sees every address a listener binds: a submission listener that also binds
25 is inbound and stays. lmtp and http are never candidates.
A listener that cannot be put back does not stop the others; it comes back
with its reason and stays saved for another try (LP-5). A delete the
registry declines is reported as not removed, so the policy never claims a
port is closed while it is still accepting.
Stopping the running socket is still a separate step in common, which owns
the listener registry. Nothing calls any of this yet.
The server-wide legacy-protocols policy: the switch, whether submission
closes with it, the listeners taken away to honour it, and who last
changed it. Stored like inbuxa:AiLimits, as JSON in the fork's subspace,
so an unset field reads as its default and an old record still loads.
closes() is where LP-3 lives. imap, pop3 and manageSieve are named
outright; smtp is not, because an SMTP listener is inbound or submission
depending on its port and nothing else can tell them apart. A listener
bound to 25 is inbound whatever it is called, including one that also
binds 465, so it stays. http and lmtp are never candidates at all.
savedListeners keeps each listener's registry object whole rather than a
few fields of it. LP-5 promises the listeners come back exactly as they
were, and a listener carries proxy networks, TLS timeouts and socket
options that no one should have to re-derive -- a field this code has
never heard of has to survive the round trip too, and a test holds that.
The module is under security/ rather than beside the rebuilt features,
because this one is not a rebuild: upstream has nothing like it.
Still only a fact. Nothing reads this policy yet, so no port closes and
no sign-in is refused; the acting code needs the listener registry and
the config store, which live above this crate.
The calibration harness (tests/src/system/ai_calibration.rs, ignored) sends
what the classifier sends to a real local model and scores its answers with
the classifier's parser.
The classifier sends only the subject and text, between unforgeable markers
after the operator's prompt, to an OpenAI-compatible endpoint the operator
configured; nothing is preset. Its answer maps to an LLM_ tag whose score is
clamped (+5.0, -1.0 by default) and can never discard or reject on its own;
X-Spam-LLM is sanitized, encoded and folded, and a planted one is removed.
Failures, timeouts past the ceiling, a full slot or a paused model leave
mail flowing untagged. llm_prompt answers trusted scripts, and accounts
holding interactAi within an hourly limit. Redirects aren't followed and no
content or secret is logged. The limits live in inbuxa:AiLimits.
Acceptance tests 1 and 3 to 21; test 2 as the re-enabled shared llm case,
whose setup no longer waits on a rules file from a developer's own path;
test 22 written as the ignored ai_compat.
Logos resolve domain, then tenant, then server-wide, then the built-in, with
subdomains finding their domain. GET /logo serves a data-URL image, redirects
to a URL logo without fetching it, sandboxes SVG, and answers 404 when no
custom logo applies. Emails embed the first PNG, JPEG or GIF logo. Logo and
template writes are checked; stored templates are read at send time, always
escaped, and fall back to the built-in with a build warning when they don't
parse. The RSVP page is served byte for byte with a CSP and no-referrer. The
sign-in and RSVP pages load the logo through an image element. MT-22's
session logo follows the chain to the server-wide logo.
Acceptance tests 1 to 17; test 18 written as the ignored branding_compat.
With archiveDeletedAccountsFor set, a destroyed account's record is kept in
the fork subspace with its id, its DestroyAccount task is due at the end of
the period, and its shares are suspended both ways. Its addresses can't be
taken by new accounts, aliases, lists or masks. inbuxa:DeletedAccount/get
lists kept accounts to server and tenant administrators; /set restores one
with a new password (same id, task cancelled, shares reinstated) or destroys
it now. The destroy task also clears undelete's own records.
Acceptance test 14; test 16 written as the ignored undelete_compat.
Files, events and contacts are noted when deleted for good and archived by
the unindex task when retention is on; Sieve scripts are archived at
deletion. A restore goes back to its folder, calendar or address book if it
still exists, takes a free " (restored)" name, comes back inactive for
scripts, and is refused over quota with the item left archived.
Acceptance tests 6, 8 and 12.
Every way of deleting mail for good (JMAP, IMAP expunge, POP3, Trash
emptying, mailbox removal) notes the message's mailboxes and keywords while
archiving is on, fixing its deadline then; when its data is finally removed
it becomes an x:ArchivedItem record, written as upstream writes them, with
its copy held until the deadline. Retention is read at deletion time, so a
change applies at once. Restore puts a message back in the mailboxes it was
in (Trash only if that was all), with its keywords, and removes the record;
over quota it stays archived. x:ArchivedItem/get returns status and
accountId; query filters on type, archivedAt and text; set requests a
restore once or destroys; /changes is a fork addition. Expired items go in
the data purge. The shared account-access rule moves to jmap::inbuxa::access.
system_tests now calls undelete::test, and the archiving gate is gone.
Found by running system_tests, which masked email no longer stops:
- rcpt_resolve rewrites a live mask to its owner's address, so
Delivered-To names the account; delivery recognizes the mask from the
original recipient when it belongs to that account.
- x:MaskedEmail/set create responses carry the server-set email.
- x:MaskedEmail/query returns every mask to a server-level impersonate
holder, and filters on accountId.
- The refusal for an unlinked emailDomain uses upstream's wording.
- The shared delivery test checks the fork's address format (ME-13).
- The masked email test's tenant domain uses manual DKIM, so its cleanup
leaves nothing behind.
The fork's per-account change log answers /changes, collapsing a mask
created and destroyed in the window. /changes on a registry type needs that
type's get permission.
A live mask accepts mail at RCPT TO and delivers to its owner, with an
X-Masked-Email header naming it. A disabled mask files straight to Trash,
past the owner's Sieve script. Deleted and expired masks are refused like
unknown addresses, without being cached as unknown. Mail moves lastMessageAt
and turns a pending mask enabled. Sub-addresses on a mask work.
Subspace _ holds the fork's own data, with its own SQL table and RocksDB
column family, and is part of backup. The masked_email module keeps each
mask's state, last mail and pending deadline beside upstream's record, an
index from address to mask with tombstones, and a per-account change log;
and generates addresses in the fork's format.
New crate crates/features (inbuxa-features), AGPL-3.0-only, holding the
tenancy rules. Hooks in common: a tenant's roles and permission lists cap
its people's permissions; a change to a tenant, or to a role a tenant holds,
drops its members' cached permissions; delivery and every other write check
the tenant's maxDiskQuota; usedDiskQuota reads the tenant usage counter.
The default Tenant Administrator role gains sysTenantGet and sysTenantQuery.
jcoffey-dev