Background
Starting with hMailServer 4.3, a main administrator password exists for hMailServer. During the installation of hMailServer 4.3, you specify the password you wish to use. A MD5 hash of this password is then stored in hMailServer.ini (The AdministratorPassword setting under the Security section )
Changing the password
Method 1 - Using hMailServer Administrator
If you know the current administrator password, or any other password to an account with server-level administration permissions, you can change the password using hMailServer Administrator.
Start hMailServer Administrator and log on.
Go to Settings -> Advanced
Enter the new Administration password and save the changes.
Method 2 - By reinstalling
Remove the AdministratorPassword setting from hMailServer.ini.
Re-install the same hMailServer version you have already installed. During the installation you will be prompted to specify a new password.
Method 3 - Using a MD5 calculator
Use a MD5 calculator to calculate a new MD5 hash.
Specify the new MD5 hash in hMailServer.ini. The setting you should update is AdministratorPassword
Restart the hMailServer service.
Thank you............