Download older hmail server version

Before you upgrade hMailServer, you should back up all your email messages and settings. It's very rare that an upgrade of hMailServer fails, but if it does, you might need to restore a backup of your installation. Remember that if an upgrade fails, all your email may be lost so this is very important that you backup your system before upgrading.

Generally, there's no need to uninstall the old hMailServer version before installing the new one. The hMailServer installation program will automatically stop the current hMailServer installation before installing the new version. The recommendation is therefore not to uninstall the existing version before installing the new one. The exception to this rule is if you upgrade from hMailServer 3. If you don't uninstall hMailServer 3.

This should never cause any problems. Uninstalling hMailServer does not remove any email messages, accounts or other settings. You can uninstall hMailServer and then install it again without losing any messages. The below steps are the same for most hMailServer version. For version specific informtion, plese see the Upgrading topic in the documentation. When upgrading hMailServer to the latest version, you can install the latest version immediately in step 3. For example, when upgrading from 4.

It's possible to upgrade directly from 2. There are exceptions to this rule though:. When you upgrade from one version to a later version, the data in your database and all email messages are preserved. However, there's a risk that something goes wrong during the upgrade so it is still important to take a full backup of your installation. He or she then needs to create new scripts which reverts the change in the datbase. In many cases, this approach won't be possible. For instance, if a feature which existed in the old version has been removed in the new version, the data required for this feature may have been dropped when the upgrade was made.

If you experience a problem in the current version of hMailServer, the best way to proceed is trying to solve the problem.

Sometimes users feel that they must downgrade if they run into a problem, when the problem they experience isn't really related to hMailServer. The problem may be related to some modified feature in hMailServer, or it may be a bug in which case it will be fixed if it's reported. Search documentation. Toggle navigation. Restoring a backup If you have upgraded and want to downgrade to the previous version again, one way to do this is to uninstall hMailServer completely, install the old version and then restore the backup.

Manually reverting the database changes The database changes made by the upgrade scripts can in some cases be manually reverted by a person with knowledge in SQL syntax.