Build 9756 (Sep 17, 2026)
Question asked by kevind - 9/18/2026 at 6:34 AM
Unanswered

Share your experience with this new build...

  • Added: [HA] [HUB] Show password requirements when a cluster administrator changes password.
  • Added: A setting to block HTTP requests sent to an unrecognized Host header.
  • Added: ARC sealing for mailing list messages that keep the poster's address in the From header.
  • Added: ARC sealing for messages forwarded through aliases to external members.
  • Added: Blank password guards when creating users.
  • Added: Domains can now be configured to allow users to opt in to email Classification versus it being enabled for all users of the domain.
  • Added: System setting to enable/disale the SOAP API endpoints.
  • Added: The ability to disable volume mounts.
  • Changed: [HA] [HUB] Improved error page styling.
  • Changed: [HA] [HUB] Renamed the Settings page to “General”.
  • Changed: A 2FA code is now required when disabling the feature except for System Administrators.
  • Changed: Forwarded messages now retain the sender's DKIM signature and are also signed by the forwarding domain, improving delivery of SRS-forwarded mail to major providers.
  • Changed: The toggles for reporting spam corrections for SpamFoo and Rspamd are now separate controls.
  • Changed: Updated listed time zones.
  • Fixed: [HA] [HUB] Login page custom help login is appending a GET string.
  • Fixed: [HA] [HUB] New IDS rule shows an incorrect error message in text fields.
  • Fixed: [HA] [HUB] Routing Rules display a GUID in place of a gateway name.
  • Fixed: [HA] Spam settings are not always syncing to nodes.
  • Fixed: 2FA ignores webmail's service access setting.
  • Fixed: A specific GRP file can cause the web interface to hang.
  • Fixed: A user named after a recently deleted mailing list will not receive emails.
  • Fixed: Accounts -> Users / Alias / Mailing List, Column and Field Names do not match.
  • Fixed: Bounce Reason event condition doesn't work as expected.
  • Fixed: Bounced local recipients miscounted as remote recipients in delivery throttling and stats.
  • Fixed: Certain European and Asian timezones do not work correctly in calendar events.
  • Fixed: Chat option shows as available on professional edition.
  • Fixed: Consistency issues between domain and system level event conditions.
  • Fixed: Copy pasting files does not always work in Online Meetings.
  • Fixed: DMARC treats an SPF result of Neutral as a Pass.
  • Fixed: External HTML images in emails do not display correctly with certain formatting.
  • Fixed: External posters to Mailing List with "Poster Address" as FROM fail DKIM/SPF checks on remote delivery.
  • Fixed: Failed Delivery Status Notification (DSN) message is sent when SMTPUTF8 style DSN cannot be delivered.
  • Fixed: Forwarded messages could arrive with broken DKIM and ARC signatures.
  • Fixed: Idle email compose windows can sometimes fail to upload files.
  • Fixed: Meeting invites sent from Outlook [MAPI] using a non-Unicode character encoding can appear incorrectly in attendee calendars.
  • Fixed: Polish characters do not appear correctly when emails are auto-forwarded from SmarterMail to Microsoft 365.
  • Fixed: Renaming a folder in Outlook [IMAP] doesn't always sync to webmail.
  • Fixed: Sending event invites with certain delegate settings can cause a delivery loop.
  • Fixed: SharePoint sync can stop working when ann account is configured with 2FA.
  • Fixed: Some contact fields are lost during WebDAV sync.
  • Fixed: SpamFoo classification still occurs even when it's disabled for a user.
  • Fixed: Subject prefixes and spam-type indicators (e.g.m SPAM LOW:) are sent to SpamFoo when reporting spam/ham feedback.
  • Fixed: Using webmail with Firefox browsers overlaps enable/disable toggles on calendars.
  • Fixed: Webhooks in routing rules, system events, and domain events can accept invalid JSON bodies.
  • Efficiency: Better message handling when secondary storage is unreachable.
  • Security: Improved handling of authentication attempts with empty passwords.
updated... 🤞🤞🤞🙅‍♂️🙅‍♂️🙅‍♂️
Gabriele Maoret - Head of SysAdmins and CISO at SERSIS
Currently manages 7 SmarterMail installations (1 in the cloud for SERSIS which provides services to a few hundred third-party email domains + 6 on-premise for customers who prefer to have their mail server in-house)
Linda Pagillo Replied
I will be upgrading a Windows 2025 server to this build tonight. Will let you know how it goes :)
Linda Pagillo
Mail's Best Friend
Email: linda.pagillo@mailsbestfriend.com
Web: www.mailsbestfriend.com
Authorized SmarterTools Reseller
Authorized Message Sniffer Reseller
 
ICT Informatik Replied
updated - no problems 
Sébastien Riccio Replied
Hi,

A small question before we upgrade:

  • Changed: A 2FA code is now required when disabling the feature except for System Administrators.
Does this also impact disabling 2FA for a mailbox using the API ? We allow our customers to disable 2FA from their control panel if they lost their 2FA device.
Requiring a 2FA code at this point would render this ability pointless.

Thanks a lot for the feedback.
Kind regards.
Sébastien Riccio
System & Network Admin

Linda Pagillo Replied
Upgraded to 9756 last night. Windows 2025 server. No problems with the upgrade and no reports of issues from any customers :)
Linda Pagillo
Mail's Best Friend
Email: linda.pagillo@mailsbestfriend.com
Web: www.mailsbestfriend.com
Authorized SmarterTools Reseller
Authorized Message Sniffer Reseller
 
Mathieu Peloquin Replied
On Linux. Upgraded. Everything looks fine.
Sabatino Replied
Updated 12 hours ago
No problem

Sabatino Traini
      Chief Information Officer
Genial s.r.l. 
Martinsicuro - Italy

Kyle Kerst Replied
Employee Post
@Sébastien Riccio that is a great question and I can do some testing on this through the week and get you an update. Do you mind providing details on which control panel you're using? I know that we have an in-house Plesk and WHMCS environment already that we can test against, but I believe they push you to SmarterMail to manage those settings. If the 2FA reset in your control panel doesn't currently include account for needing the code I would expect it'll need adjustment to it's flow. However, if their 2FA reset mechanism leverages impersonation it may not. 
Kyle Kerst
Lead Internal Network/System Administrator
SmarterTools Inc.
William Allen Replied
Linux upgraded flawlessly. Such an improvement over my IceWarp server which never updated/upgraded without a hitch.

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