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OpenVPN Configuration
Here are the steps to configure OpenVPN using Webmin:
1. Create Certification Authority
To create the Certification Authority, go to Server -> OpenVPN + CA, click on Certification Authority List. More »
Installing OpenVPN Server
In my configuration, I use CentOS 5.3 with 1 CPU 2.8 GHz, 2 GB RAM, 40 GB HD, and one NIC as the server. To make it easier when installing OpenVPN, I use RPMForge repository. First I need to download rpmforge release package then install it. More »
Our company have several branches and mobile users that need to access data in the head office. I need to provide VPN access for them. I want a solution for site-to-site VPN that is cost effective, stable, easy to use and configure with Graphical User Interface. After exploring the documentation in the net, I find the solution for my need. I use OpenVPN with Webmin running on CentOS server in the head office side. As for the branches side, I choose pfSense. And for the mobile users, I use OpenVPN client for Windows. More »
Tags: OpenVPN, pfSense, site-to-site VPN, WebminPada tanggal 24 November 2009, Microsoft Indonesia mengadakan acara Join Business Launch dengan agenda peluncuran produk baru Microsoft. Produk yang diluncurkan adalah Windows 7, Windows Server 2008 R2 dan Exchange Server 2010. Dengan tema acara “Trificiency - The New Efficiency” Microsoft memamerkan kehebatan ketiga produk tsb yang dapat “do more” with “less cost”.
Dalam acara ini Microsoft juga memberi penghargaan kepada para IT Professional dengan menampilkan di panggung 77 orang pertama Indonesia yang lulus sertifikasi Windows 7 serta recognition bagi 60 orang peserta Exchange 2010 Ignite Traning.
Dan seperti acara launching Windows Server 2008 tempo hari, kali ini saya juga dapat kaos baru dan berkesempatan naik panggung lagi sebagai peserta Exchange 2010 Ignite Training 
Microsoft has released service pack 2 for exchange server 2007 on August 24th, 2009. It is available for download here. Exchange 2007 SP2 includes many new features. You can find the complete list of SP2 new features in You Had Me At EHLO blog. One thing I like most is :
I got an error when I try to move default offline address book generation server to other server. The original OAB generation server cannot be found. It was a testing server that was accidently deleted after migration process. To solve this problem, I need to delete the old default OAB, create new default OAB, specify the new default OAB as the OAB for all mailbox database.
There are some prerequisites need to be meet before you can uninstall Exchange Server 2007 from a server. Completely removing this Exchange 2007 server from a server will includes removing all server roles, all installation files, and the Exchange server object and all its child objects from the Active Directory directory service. More »
This article explain about how to solve a problem of a disconnected mailbox that cannot be removed because the MaiboxGuid exist twice. The MailboxGuid of the disconnected mailbox is the same as the MailboxGuid of other active mailbox in different database. This problem arise when I disabled a mailbox of a user, created new mailbox for that user and moved the mailbox to other mailbox database. More »
In Exchange 2007, there are two options to delete a mailbox:
1. Remove Mailbox
2. Disable Mailbox
If you remove a mailbox, the mailbox data that is stored in the Exchange mailbox database is marked for deletion and the associated user account is also deleted from Active Directory. If you disable a mailbox, the user account is retain, it will only disassociate the mailbox data from the user account.
Exchange retain disconnected mailboxes in the mailbox database based on the deleted mailbox retention settings configured for that mailbox database. In Exchange 2007, the default retention period is 30 days. During this time, the disconnected mailbox can be recovered by associating it with an existing Active Directory user account. After the specified retention period, a disconnected mailbox is permanently deleted from the Exchange mailbox database. More »
Tags: exchange 2007; disconnected mailboxSometimes, we need to delete/remove a mailbox from one user account and reconnect it to other user account. When we delete/remove mailbox from Exchange 2007, we can’t see it immediately in the Disconnected Mailbox list under Recipient Configuration. In Exchange 2007, there is no GUI facility like “Run Clean Up Agent” in Exchange 2003.
To update the Disconnected Mailbox list, we need to use cmdlet in the Exchange Management Shell. Use the Clean-MailboxDatabase cmdlet against the mailbox database it was in.
Here is how to do it:
1. First, let’s list the Mailbox Databases that we have using the Get-MailboxDatabase cmdlet.
[PS] C:\> Get-MailboxDatabase
Name Server StorageGroup Recovery
---- ------ ------------ --------
Mailbox Database Server1 First Storage Group False
Executive Database Server1 Second Storage Group False
Mailbox Database Server2 First Storage Group False
Partner Database Server2 Second Storage Group False
2. Clean up the database. To clean up specific database on specific server, use these cmdlet:
[PS] C:\> Clean-MailboxDatabase “Server1\Mailbox Database”
[PS] C:\> Clean-MailboxDatabase “Server2\Partner Database”
After running the cmdlet you will see the disconnected mailbox in the Disconnected Mailbox list.
