Issues in shared mail - router automatically shut down

Hi

We enabled the shared mail in our server. It is working fine. but before one week, the router is shut down once in a day. find the following log from my server.

11/09/2009 01:08:50 PM Router: Message 00296E77 transferred to200.200.1.4 for navywing@sina.com via SMTP11/09/2009 01:09:20 PM Router: No shared mail database will be used formail transfer11/09/2009 01:09:20 PM Router: Shutdown is in progress11/09/2009 01:09:21 PM Mail Router shutdown11/09/2009 01:10:24 PM Successfully registered 1 system filters.11/09/2009 01:10:30 PM Router: Message Tracking is enabled11/09/2009 01:10:30 PM Router: Message Tracking usingdirectory /lotus/notesdata/mtdata11/09/2009 01:10:30 PM Mail Router started for domain DNLPUNE11/09/2009 01:10:30 PM Router: Internet SMTP host dnl1 in domaindeepaknitrite.com11/09/2009 01:10:30 PM Router: Shared mail database (multiple) will beused for mail delivery11/09/2009 01:10:58 PM Router: Transferring mail to domain 200.200.1.4(host 200.200.1.4 [200.200.1.4]) via SMTP

I am waiting for your response.

CS Rajeshkumar