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SmarterMail Build 9540
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Sunday, 15th February, 2026
00:28am
Build 9540
IMPORTANT: [SECURITY] Changed how the command-line is utilized across various areas.
Added: [HA] Trusted Senders are now synchronized across a split domain.
Added: SmarterMail codebase is now obfuscated.
Changed: [HA] [HUB] Improved handling of impersonate and manage node errors when pop-ups are blocked by a browser.
Fixed: [HA] [HUB] Impersonating from the accounts grid gives a 401 error.
Fixed: [HA] [HUB] When logging into a hub you will sometimes see a `Fetch Error` instead of the server health grid details.
Fixed: [HA] An issue where certificates can fail to renew for a cluster.
Fixed: [HA] An issue with TypeNameHandling.
Fixed: An EWS push notification issue.
Fixed: An issue where a user is logged out when opening the Reports area.
Fixed: An issue where authenticated users could have the server issue an HTTP request to an arbitrary URL.
Fixed: An upgrade from SmarterMail 15.x to latest fails to detect existing XML configuration files.
Fixed: Certain HTML messages Do not Render Correctly in Webmail.
Fixed: Checking 2FA code is not thread safe.
Fixed: External document servers (e.g., Collabora) fail to load files in email attachments but work for File Storage files.
Fixed: SmarterMail's EXAMINE implementation does not comply with RFCs (IMAP).
Fixed: SmarterMail's EXAMINE implementation for IMAP does not comply with RFCs.
Fixed: Successfully used 2fa tokens are not always cleared from memory correctly.
Fixed: Successfully used 2FA tokens are not always cleared from memory correctly.
Fixed: Users can get logged out of webmail intermittently.
Fixed: Using TAB to move cursor when composing new message in webmail is off.
Security: [HA] Fixed a potential JSON deserialization issue.
Security: Added access restrictions to a system with compromised RSA key.
Security: Added the ability for system administrators to add IP restrictions for all APIs.
Security: APIs now follow blacklist/whitelist restrictions for all scope levels.
Security: Hardened various protocols against complex memory exhaustion issues.
Security: Hardened various syncing protocols against complex entity expansion issues.
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