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Update Denbun IMAP Version V1.0I R1.2 to V2.0I R6.4

You can download the update module for Denbun IMAP Version.

Please confirm the version of Denbun IMAP version you are now using and download the module suited to your server OS.


Please backup the data before updating.

[Version Up] Core Module V1.0I R1.2 to V2.0I R6.4

Target Version Denbun IMAP Version V1.0I R1.2
Version after Updated Denbun IMAP Version V2.0I R6.4
Type of Update Patch
Last Update 4/16/08
Last Update 8/10/09
In V2.0I R4.1 for Windows, if Denbun is installed other than the system drive (C:), the installation process is stopped.
We update the installer to fix the symptom.
Choose a module suited to your server OS.

Support OS File Name Size Guide
Windows Version (Windows Server 2003) dnwmlupV20IR64wnj.exe 15,337KB Installation Guide
Linux Version
(RedHat Enterprise Linux 4/
CentOS 5.2, 5.3)
denbun-update-2.0-6.4.i386.rpm 11,032KB Installation Guide
dnwmlupV20IR64lR9.tar.gz 15,627KB Installation Guide
Solaris Version (Solaris 9/ 10) dnwmlupV20IR64sol.tar.Z 23,635KB Installation Guide

[Version Up] Mobile Version V1.0IM R1.2 to V2.0IM R6.4

Target Version Denbun IMAP Version - Mobile Version V1.0IM R1.2
Version after Updated Denbun IMAP Version - Mobile Version V2.0IM R6.4
Type of Update Re-installation
Last Update 4/16/08
Last Update 9/1/10
If you are using Linux OS or Solaris OS as the server, please uninstall the mobile version that already installed and download and install the latest version suited to your server OS.
-> Click Here to Download

Click the link for detailed information what is new.

-> New features in V2.0

The following is the complete list of changes.

Module Applied Changes
Core/Mobile Fixed the problem where a message with read receipt request could not be open.
Fixed the problem where an attachment file of a message sent from some mailers could not be open.
Fixed the problem where an HTML message could not be forwarded.
Fixed the problem where a message contains certain character could not be displayed correctly.
Fixed the problem where a message sent/received from/to a mailing list could not be sent.
Fixed the problem where message list and message screen could not be displayed correctly.
Fixed the problem where an attachment file could not be displayed correctly.
Fixed the problem where a folder created by another IMAP mail client could not be open.
Fixed the problem where the subject of a message could not be displayed correctly.
[Performance Enhancements] Removed the unnecessary process when opening messages and enhanced performance.
[Specification Changes] Converted half-wide Japanese characters in "From", "To", "Subject" and "Name of attachment file" to full-wide Japanese characters.
[Specification Changes] Enhanced security when changing Login ID.
Core Fixed the problem where a user could not login.
Fixed the problem where the communication error occurred when login.
Fixed the problem where an attachment file could not be downloaded.
Fixed the problem where a hyper link could not displayed when showing a message.
Fixed the problem where an attachment file sent from certain mail client was displayed as the message body.
Fixed the problem where a read receipt could not be sent even if the user choose respond to Read Receipts automatically option.
Fixed the problem where messages in a folder named with Japanese characters could not be "Read".
Fixed the problem where messages in a folder named with Japanese characters could not be sent or forwarded.
Fixed the problem where the message text is cleared when the window is maximized.
Fixed the problem where an attachment file cannot be referred on browsing message screen.
[Improvement] Resizing the window to fit the entire browser screen when login.
[Specification Changes] Changed way to display disk usage.
[Specification Changes] Mail format attachment files can now be displayed on Denbun screen.
Mobile Version Fixed the problem where page could not be changed correctly when the message shown with more than one pages.
Fixed the problem where special characters could not be displayed correctly when composing a message.
Fixed the problem where a message cannot be sent if an empty signature is registered.