Sbs

My previous posts (http://nkush.blogspot.com.au/2012/08/installing-openvpn-22-on-centos-63-64bit.html and http://nkush.blogspot.com.au/2011/10/installing-openvpn-22-on-centos-57.html) have been on installing OpenVPN on Linux.

This post is slightly different as it installs and configures OpenVPN on a Microsoft Windows Small Business Server (SBS). The SBS installation is also different from the previous write-ups since this configuration uses Ethernet bridging instead of tunneling.

Although SBS comes with Layer2 Tunneling Protocol (L2TP) and Point-to-point Tunelling Protocol (PPTP) for Virtual Private Network (VPN), some users may want to use an Secure Sockets Layer (SSL) based VPN such as OpenVPN. The default installation location, i.e. C:\Program Files\OpenVPN\ is used in the instructions below

At 08:59hrs this morning I got a call from a customer who was unable to receive e-mail. Logging into their server I discovered that there were indeed messages stuck in the Local Delivery queue. I checked the Application event logs and found the following event log

Event Type: Error

Event Source: MSExchangeSA Event Category: MAPI Session  Event ID: 9175 Date: 8/05/2012 Time: 9:12:31 AM User: N/A Computer: ***DELETED*** Description: The MAPI call ‘OpenMsgStore’ failed with the following error:  The attempt to log on to the Microsoft Exchange Server computer has failed. The MAPI provider failed. Microsoft Exchange Server Information Store ID no: 8004011d-0512-00000000  For more information, click http://www.microsoft.com/contentredirect.asp.