I run an updated SmarterMail server (build 7008) that stores all data on a SAN drive. When the SAN is unreachable, the mail server is unable to validate any user of any domain, so essentially mail service is down (though the mail server is essentially running fine). I now have a service monitor check the mail server every 5 minutes and it was tripped earlier this morning at 2:51 am.

When logging into SmarterMail, it fails to bring up any domain or user information because it's all stored on the SAN. In it's error log are repeating entries stating "Application Stopping.  Reason: The hosting environment shut down the application."

In the Windows Server logs, I see an error at 2:47:17 am regarding Schannel eventid 36888 - "A fatal alert was generated and sent to the remote endpoint. This may result in termination of the connection. The TLS protocol defined fatal error code is 10. The Windows SChannel error state is 1203." I also see that the Windows Update service was busy installing updates.

The quickest resolution when this happens is to simply restart the SmarterMail service. I'd like to prevent this from happening, and want to see if anyone has any ideas on the cause. I thought about moving config files off the SAN and onto the server but don't think that would do much good because the message store would still be on the SAN. Any suggestions would be appreciated.