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How-To: Configure Webmail for Blockade


Product: All

Version & Build: 4.2 & up

If you attempt to use a conventional installation of WebMail in a cluster or blockade configuration (i.e.,stand-alone copies per machine but the WebMail Users folder is shared), there is a problem when users close their sessions improperly, such as not logging off and then trying to log in again using WebMail on another member of the blockade.
WebMail can work in a blockade but the WEBMAILSVR service does not work well in a cluster setup.  You must, therefore, configure one instance of the WebMail service to act as coordinator for your two nodes.  The trick is to get WebMail installed on NODE 2 to use the WEBMAILSVR service on NODE 1 for user validation and coordination.
Configuration on NODE 2:
a) Modify the webmailsvr.ini file on NODE 2 to point to the WEBMAILSVR Service on NODE 1:
  • Go to the root Modus folder \ Web subfolder
  • Copy webmailsvr.ini to webmailsvr.bkp (make a backup)
  • Edit webmailsvr.ini with Notepad and change the RPC Server configuration so that the host=x.x.x.x value points to the IP address on NODE 1
b) Modify the custom.config file on NODE 2 to point to NODE 1
  • Go the the root Modus folder \ Web subfolder
  • Go to the Webroot subfolder
  • Copy custom.config to custom.config.bkp
  • Edit the custom.config file with the following changes:
Change this line:
<add key="WebMailServerAddress" value="localhost"></add>

To this line:
<add key="WebMailServerAddress" value="x.x.x.x"></add>
Where x.x.x.x is the IP address of NODE 1
 This will eliminate conflicting sessions.
Modified 12/20/2006
Keywords: blockade, cluster, shared webmail
Article ID: 1480