We are happy to announce the public preview of the latest and best ORF version. ORF 5.5 brings many new features and improvements we’ve been frequently asked about.

Read on to learn what's changed and get the new beta.

What's New?

Multi-server support in the Log Viewer

The Log Viewer can now connect to multiple ORF instances at the same time, so you may browse and filter logs from all your ORF servers simultaneously.

Filtering inside compressed attachments

The Attachment Filter can now perform recursive checks in compressed (Zip) files. Password protected archives are treated according to user-defined policy.

Attachment filtering based on file size

You may now set a per-expression file size limit for each attachment filter expression.

Option to blacklist emails sent to disabled accounts

A new Recipient Validation option has been added to allow the blacklisting of emails sent to email addresses associated with disabled Active Directory accounts.

List item control

All blacklist and whitelist entries can now be enabled or disabled selectively.

Safe quarantine

Removed attachments are now saved with a .quarantine extension to prevent the accidental execution of malicious files.

Verbose header tags

The name of the blacklist test that triggers the filtering action can now be included into the header tag.

Remote admin auto-disconnect

When the ORF service shuts down or is restarted, any remotely connected Administration Tool will now disconnect automatically.


Be sure to read the Installation Notes before installing the beta version.

ORF Fusion

for Microsoft® Exchange and IIS SMTP Service
version 5.5 BETA R02
released on April 16, 2018
expires on June 4, 2018
size 8.24Mb
Download System requirements

ORF Fusion for SBS

for Microsoft® Windows Small Business Server
version 5.5 BETA R02
released on April 16, 2018
expires on June 4, 2018
size 8.24Mb
Download System requirements

A separate download of the ORF management tools is available below. Install this package on workstations to manage ORF remotely. Note that management tools are included in the full installer packages above (for local management).

ORF 5.5 Beta R02 Management Tools-only Installer
orf-5.5-mgmt-tools-beta-r2.exe / 7.22Mb / April 16, 2018

The management package can be used with both ORF Fusion and with Fusion for SBS.

The 5.5 Management Tools are not backward compatible. You can only manage ORF 5.5 installations with the 5.5 Management Tools package. Side-by-side installation of 5.x Management Tools is currently not available.

Installation Notes

Please consider that ORF 5.5 Beta is pre-release software and may contain bugs. Install the beta for testing purposes only.


When upgrading from an existing ORF installation, make sure to create a configuration backup prior the upgrade, as described by the Configuration Backup Guide. If you need to revert back to the previous version, this backup can be used to restore your previous version quickly.

Important Exit from the Windows Event Viewer MMC before the upgrade (see this FAQ article).

Known Issues

The list below contains the issues that we know about the current beta release. This list is maintained during the lifetime of the beta; be sure to check back here before reporting an issue. Issue severity levels are explained in the FAQ.

There are currently no known issues with the latest beta release.


A dedicated support forum is available for the beta version. Please use this forum for technical support and bug reports. Registration is not required.

Reporting bugs

When reporting bugs, please share any information with us that you consider important for reproducing the bug. A few tips on what we might need:

When sensitive information (such as logs) needs to be shared, please send these to cs@vamsoft.com.

You can report issues of all severity, even the smallest things like typos or grammatical errors.


What are the limitations of the beta version?

The beta release is fully functional and contains all planned features. It is also time-limited and the current R02 release will expire on June 4, 2018. We will release either the final version or another beta release before the above date.

What do the different issue severity levels mean?

We define four simple levels for issue severity.

Cosmetic issues are harmless and do not affect any functionality. These are typically typos, grammar mistakes and other interface issues.

Minor issues render some functionality of ORF broken, but they are generally harmless and do not affect the overall operation of the product.

Medium severity issues cause an important ORF functionality to be broken. If you rely on the affected functionality, you may not be able to use the beta until a fix is released.

Major issues affect the overall reliability of the software. If such issue is published, you are recommended to stop using the beta until a fix is released. Make sure to read the description to understand the risks.

Unknown severity is assigned to issues where the scope of the issue has not been determined yet.

Setup says "DeleteFile failed; code 5.", how do I fix this?

You may receive "DeleteFile failed; code 5. Access denied." error from the Setup regarding orfeesvc.exe when updating an existing ORF installation.

This is caused by a program that locks the Windows Event Log message resource embedded in the ORF Service binary orfeesvc.exe. The typical offenders are the Windows Event Viewer MMC and software that uses WMI (Windows Management Instrumentation) for reading the Windows event log.

To fix this problem, exit from the Event Viewer MMC and click "Retry". If the file is still locked, shut down any software temporarily which monitors the Windows event log and try again.

If the above does not help, go to the ORF installation directory and rename orfeesvc.exe to orfeesvc.bak, then click "Retry".

What is the difference between Fusion and Fusion for SBS?

Both products offer the same features and services. However, Fusion for SBS will run on Windows Small Business Server only, while Fusion supports all platforms.

Can you add Feature X?

We are happy to hear your suggestions and they may make it into a future ORF version.

What are the system requirements of ORF 5.5?

The system requirements have not changed since ORF 5.4.1. Check the current system requirements here.

The Management Tools package can be installed on any modern Windows desktop OS (Windows XP or later).

Just how stable is the beta?

Early ORF releases were tested in-house by Vamsoft developers for weeks on various platforms. Due to this, we expect that most issues that may arise will be lightweight.

Be sure to visit the beta forums every once in a while, we will publish any bug reports there. You can also subscribe to the RSS feed of the beta forum.

Can I upgrade to the new beta from ORF X.X?

Yes, the beta setup is fully backward compatible and will update any earlier ORF Fusion or Enterprise Edition release.

Will I be able to upgrade to the final version from the beta?

Yes, you will be able to upgrade from the beta in-place.

How do I revert to ORF X.X?

You can revert by uninstalling ORF 5.5 Beta and installing a previous ORF version. Once the installation is complete, restore the configuration backup you made previously (see the Configuration Backup Guide).

When is the final version expected?

It depends on the beta test progress. We are committed to release a stable ORF 5.5 to our clients, so the final release can be expected only once the preview release reaches a reasonable level of reliability.

Will I get ORF 5.5 free of charge upon its final release?

Your Software Maintenance Agreement guarantees access to any new ORF releases within the validity period — this includes ORF Fusion 5.5. Be sure not to let your SMA expire and you will get the new ORF at no additional cost.

Where do I get more information?

Contact our Customer Service, we are happy to answer any questions you may have.