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Improve expunged message/UID tracking in IMAP sessions, track synchronization history for mailboxes/annotations.

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Keeping the message files around, and the message details in the database, is
useful for IMAP sessions that haven't seen/processed the removal of a message
yet and try to fetch it. Before, we would return errors. Similarly, a session
that has a mailbox selected that is removed can (at least in theory) still read
messages.

The mechanics to do this need keeping removed mailboxes around too. JMAP needs
that anyway, so we now keep modseq/createseq/expunged history for mailboxes
too. And while we're at it, for annotations as well.

For future JMAP support, we now also keep the mailbox parent id around for a
mailbox, with an upgrade step to set the field for existing mailboxes and
fixing up potential missing parents (which could possibly have happened in an
obscure corner case that I doubt anyone ran into).
This commit is contained in:
Mechiel Lukkien
2025-03-05 17:17:57 +01:00
parent 684c716e4d
commit 577944310c
63 changed files with 1945 additions and 1249 deletions
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2
config/config.go
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@ -65,7 +65,7 @@ type Static struct {
ParsedLocalpart smtp.Localpart `sconf:"-"`
} `sconf:"optional" sconf-doc:"Destination for per-host TLS reports (TLSRPT). TLS reports can be per recipient domain (for MTA-STS), or per MX host (for DANE). The per-domain TLS reporting configuration is in domains.conf. This is the TLS reporting configuration for this host. If absent, no host-based TLSRPT address is configured, and no host TLSRPT DNS record is suggested."`
InitialMailboxes InitialMailboxes `sconf:"optional" sconf-doc:"Mailboxes to create for new accounts. Inbox is always created. Mailboxes can be given a 'special-use' role, which are understood by most mail clients. If absent/empty, the following mailboxes are created: Sent, Archive, Trash, Drafts and Junk."`
InitialMailboxes InitialMailboxes `sconf:"optional" sconf-doc:"Mailboxes to create for new accounts. Inbox is always created. Mailboxes can be given a 'special-use' role, which are understood by most mail clients. If absent/empty, the following additional mailboxes are created: Sent, Archive, Trash, Drafts and Junk."`
DefaultMailboxes []string `sconf:"optional" sconf-doc:"Deprecated in favor of InitialMailboxes. Mailboxes to create when adding an account. Inbox is always created. If no mailboxes are specified, the following are automatically created: Sent, Archive, Trash, Drafts and Junk."`
Transports map[string]Transport `sconf:"optional" sconf-doc:"Transport are mechanisms for delivering messages. Transports can be referenced from Routes in accounts, domains and the global configuration. There is always an implicit/fallback delivery transport doing direct delivery with SMTP from the outgoing message queue. Transports are typically only configured when using smarthosts, i.e. when delivering through another SMTP server. Zero or one transport methods must be set in a transport, never multiple. When using an external party to send email for a domain, keep in mind you may have to add their IP address to your domain's SPF record, and possibly additional DKIM records."`
// Awkward naming of fields to get intended default behaviour for zero values.