hMailServer 6.2.6: IMAP4rev2 as an opt-in mode, and a Control Panel redesign
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hMailServer 6.2.6 added IMAP4rev2 (RFC 9051) as an opt-in session mode. The server advertises IMAP4rev2, and a client that issues
ENABLE IMAP4rev2gets RFC 9051 semantics for that connection. IMAP4rev1 behaviour is unchanged until a client opts in. The rest of the release is Control Panel and installer work.IMAP4rev2
In the opt-in mode: ESEARCH by default,
\RecentandRECENTdropped from SELECT, EXAMINE and STATUS, the obsolete[UNSEEN]response code suppressed, and UTF-8 acceptance.Control Panel
- A central theme-aware colour-token system replaced scattered hardcoded colours. Success, warning, danger and info, and the log palette, now adapt to light, dark and high-contrast themes.
- A Fluent nav selection style and a brand keyboard-focus ring. Live-log colours legible on the light theme, readable data grids with balanced columns, and settings forms capped to a readable column with right-sized inputs.
- KPI colours that encode state, softened destructive buttons, "no activity" chart placeholders, and a Welcome page of clickable quick-action tiles.
- Every configurable server setting now has a GUI control: OAuth2 and external-token auth, SRS and BATV, submission and outbound rate limits, OpenTelemetry and the slow-query log, connection timeouts, delivery and queue tuning, search indexing, message archiving and other INI knobs,
Logging.DeviceandLogFormat, cache size caps, the domain Active Directory link, and a write-only secret editor. Documented in settings.md. - Two-factor authentication setup renders a real scannable QR code, with a grouped manual key and a copy button, and a larger verification field.
Installer
A DPI-scaled custom database-type page, modernised copy and refreshed brand imagery. The dead legacy dependency installers were removed: MSI, IE6, MDAC, JET and .NET 2.0.
The server core was validated by the full regression suite, 898 of 898 tests passing, including live SpamAssassin, ClamAV against EICAR, DMARC against live DNS, and TLS 1.2 and 1.3 handshakes end to end.
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