SM Build 9357 - MailService.exe - Fault

Problem reported by Douglas Brantley - 8/19/2025 at 9:16 AM

Known

Windows Server 2022 Standard

Version: 21H2

OS Build: 20348.4052

Installed SM Build 9357 yesterday 08-18-2025.

MailService.exe crashed at 9:46PM last night.

Faulting application name: MailService.exe, version: 100.0.9357.30410, time stamp: 0x68270000

Faulting module name: KERNELBASE.dll, version: 10.0.20348.3932, time stamp: 0x4c7b412e

Exception code: 0xe0434352

Fault offset: 0x000000000003f46c

Faulting process id: 0xa74

Faulting application start time: 0x01dc10736bf87a8c

Faulting application path: C:\Program Files (x86)\SmarterTools\SmarterMail\Service\MailService.exe

Faulting module path: C:\Windows\System32\KERNELBASE.dll

Report Id: 881fb185-8096-497a-a6b2-fc51c0adfa74

Faulting package full name:

Faulting package-relative application ID:

6 Replies

Reply to Thread

Kyle Kerst Replied

8/19/2025 at 10:38 AM

Employee Post

This exception code (0xe0434352) is unfortunately not very indicative of the root cause so we'll likely need to check some additional logs with you. If you do a quick search of the logging on your server do you find any repeating errors being logged in any particular log file?

I typically start my review in the Error logging and then move to protocols like IMAP/MAPI/etc. If you find a repeated error you can usually see which user is triggering it as well and that should give you a path to begin troubleshooting on.

Kyle Kerst

Lead Internal Network/System Administrator

SmarterTools Inc.

smartertools.com

Derek Curtis Replied

8/19/2025 at 1:03 PM

Employee Post

Douglas, we'll get a ticket started with you on this. Thanks for reporting it.

Derek Curtis

CCO

SmarterTools Inc.

www.smartertools.com

Nick Jansen Replied

8/19/2025 at 2:54 PM

I don't know if it's the same problem you're having or just a coincidence, but my SmarterMail service crashed today (for the first time ever, I'm pretty sure). I'm also on 9357, but on Linux, and at least in my case there was apparently a spool file that was expected to be there and wasn't.

I just mention this in case the cause happens to be the same for yours.

smartermail@mail:~$ sudo systemctl status smartermail
× smartermail.service - SmarterMail (100.0.9357.30410)
     Loaded: loaded (/etc/systemd/system/smartermail.service; enabled; preset: enabled)
     Active: failed (Result: core-dump) since Tue 2025-08-19 15:24:17 CDT; 12min ago
   Duration: 4d 18h 3min 994ms
    Process: 846 ExecStart=/opt/smartermail/MailService (code=dumped, signal=ABRT)
   Main PID: 846 (code=dumped, signal=ABRT)
        CPU: 2h 30min 27.156s

Aug 19 14:57:51 mail MailService[846]: Microsoft.AspNetCore.HttpOverrides.ForwardedHeadersMiddleware[1] Unknown proxy: 170.85.10.252:58097
Aug 19 14:57:51 mail MailService[846]: Microsoft.AspNetCore.HttpOverrides.ForwardedHeadersMiddleware[1] Unknown proxy: 170.85.10.252:58098
Aug 19 14:57:51 mail MailService[846]: Microsoft.AspNetCore.HttpOverrides.ForwardedHeadersMiddleware[1] Unknown proxy: 170.85.10.252:58099
Aug 19 15:24:16 mail MailService[846]: Unhandled exception. System.IO.FileNotFoundException: Could not find file '/var/lib/smartermail/Spool/SubSpool0/6476504.eml'.
Aug 19 15:24:16 mail MailService[846]: File name: '/var/lib/smartermail/Spool/SubSpool0/6476504.eml'
Aug 19 15:24:16 mail MailService[846]:    at MailService.RelayServer.SpoolMessage.GetMessage()
Aug 19 15:24:16 mail MailService[846]:    at MailService.RelayServer.MessageQueue.LocalDeliveryQueue.DoLocalDelivery(SpoolMessage spoolMessage)
Aug 19 15:24:17 mail systemd[1]: smartermail.service: Main process exited, code=dumped, status=6/ABRT
Aug 19 15:24:17 mail systemd[1]: smartermail.service: Failed with result 'core-dump'.
Aug 19 15:24:17 mail systemd[1]: smartermail.service: Consumed 2h 30min 27.156s CPU time.

Derek Curtis Replied

8/19/2025 at 3:03 PM

Employee Post

Nick - I'm going to have someone open a ticket with you on this.

Derek Curtis

CCO

SmarterTools Inc.

www.smartertools.com

Employee Replied

8/19/2025 at 3:11 PM

Employee Post

Hi Nick,

I created a ticket for you, your issue sounds very similar to this and what others have been reporting. I included a custom build that should address the issue you are seeing so let us know how that performs for you. You can reply in the ticket if you have any questions.

Thank you,

Nick Jansen Replied

8/19/2025 at 4:09 PM

Thanks! I have installed the custom build.

edit: I installed the public Build 9362 now.

edit again: I'm not the original poster, but after using Build 9362 for a week I have not encountered this problem again.

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