Error "Unknown OS error" and nntask exits on start when mail1.box is missing

Products

• Mail Security for Domino

Issue/Introduction

Symantec Mail Security for Domino 8.x exits with an error "Unknown OS error" when multiple mailboxes are enabled on Domino server and the parameter "Mail_Enable_Mailbox_Compatibility=1" is added to notes.ini.

 

When Symantec Mail Security for Domino 8.x exits, the error "Unknown OS error" is reported on the Domino server console.

Cause

When multiple mailboxes are enabled, they are titled mail1.box, mail2.box and so on. The parameter "Mail_Enable_Mailbox_Compatibility=1" in notes.ini is used to force the router to use mail.box instead of mail1.box. When set, this parameter keeps the "Mail.box" file and creates mail2.box, mail3.box and so on.

In this scenario, the nntask of Symantec Mail Security for Domino 8.x fails to load with "Unknown OS Error"  when mail1.box is missing.

Resolution

The issue is fixed in the Symantec Mail Security for Domino (SMSDOM) 8.1.1.20.

To work around this behavior without upgrading to SMSDOM 8.1.1.20, please do one or more of the following, then restart the Domino server to make changes effective:

• Disable the use of multiple mailboxes in Domino server
• Set the parameter "Mail_Enable_Mailbox_Compatibility="  to 0 in notes.ini file.

Applies To

The affected environment found so far appears to be Domino Server 8.5.1/FP1(32bit), Windows 2003 Server 32bit and Symantec Mail  Security for Domino 8.0.5/8.0.6