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This article provides an overview of the minimum requirements that must be met in order to run NoSpamProxy.

Note: In order for you to receive support services,

  • the listed requirements must be fulfilled and
  • a corresponding manufacturer support contract must be in effect.

We do not guarantee the completeness of the following information on third-party products. In any case, make sure to check the manufacturer’s pages for updates!

General requirements

  • A corporate email server, either in the company network or in the cloud.
  • NoSpamProxy can NOT be operated using the combination “Domain Controller + Exchange + NoSpamProxy” on one single system, because the operation of Exchange on a domain controller is prohibited. See Exchange Server Supportability Matrix.
  • NoSpamProxy can be installed on a system in parallel with the email server. However, this combination is not recommended, because of duplicate port assignments (mostly ports 25, 443 and 6060/6061), which can cause problems during operation. We recommend to always change the ports of the email server in case of parallel operation, so that NoSpamProxy can be reached from outside via the standard ports.

NoSpamProxy uses the following standard ports:

  • Port 6060/6061 TCP
    • internal communication between the Intranet Role and the Gateway Roles
  • Port 25 TCP
    • SMTP
    • inbound and outbound
    • modifyable
    • also used by Exchange during parallel operation
  • Port 443 TCP
    • SSL
    • internal and external communication with the Web Portal
    • modifyable
  • Port 465 TCP
    • POP3
    • to retrieve POP3 messages
    • no support for NoSpamProxy Protection

Hardware requirements

The following specifications are minimum requirements. The recommended configuration depends on the email volume and the use of individual NoSpamProxy functions.

  • 4GB RAM
  • 2 processor cores
    • virtualized or physical
  • Hard disk space
    • should be discussed individually with the support or presales team
    • If Intranet and Gateway Role are operated on one single system with no Web Portal present, 100GB should be sufficient.

Supported NoSpamProxy versions

The following versions are currently covered by our support:

  • Version 13.2
  • Version 13.1
  • Version 13.0
  • Version 12.2
  • Version 12.1 (no longer supported with release of version 14)
  • Version 12.0 (no longer supported with release of version 14)
  • Version 11.1 (no longer supported with release of version 14)

NoSpamProxy Outlook Add-In

  • Outlook 2010 and later

Microsoft Operating Systems

  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2012 (no longer supported with version 14)
  • Microsoft Windows Server 2008 R2 (no longer supported with version 14)

Microsoft .NET Framework

  • .NET Framework 4.8, supported as of NoSpamProxy version 13, mandatory as of version 14
  • .NET Framework 4.7.2, mandatory supported from NoSpamProxy 12.2 onwards
  • .NET Framework 4.6.2, supported up to version 12.1 and older
  • .NET Framework 4.5.7, supported up to version 11.1 and older

Microsoft SQL Server Express Version

  • Microsoft SQL Server 2019 Express Version (supported for Windows Server 2016 and above)
  • Microsoft SQL Server 2017 Express Version (supported for Windows Server 2012 R2 and Windows Server 2016)
  • Microsoft SQL Server 2014 Express Version (no longer supported with version 14)
  • Microsoft SQL Server 2012 Express Version (no longer supported with version 14)
  • Microsoft SQL Server 2008 R2 Express Version (no longer supported with version 14)

For details on supported combinations, please refer to the official Microsoft pages for each product.

Microsoft SQL-Server Standard/Enterprise

  • Microsoft SQL-Server 2012 SP4 and later
  • Microsoft SQL-Server 2012 SP3 and older (no longer supported with version 14)

Microsoft Report Viewer

Microsoft Report Viewer 2010 is required to install the Intranet Role.

Microsoft Visual Studio Tools for Office

Visual Studio Tools for Office 2010 Runtime or higher is required to install the Outlook Add-In.

Further notes

  • Make sure that any third-party applications you use that connect to NoSpamProxy are covered by their respective manufacturer’s support. If this is not the case, the NoSpamProxy support team will not be able to provide support.
  • Make sure that the necessary exceptions are set in the local Windows Defender (and other AV scanners used) to allow NoSpamProxy to run smoothly.
  • If you have installed NoSpamProxy and Microsoft Exchange on the same server, make sure that the respective version of the framework is supported by Exchange before installing or updating the Microsoft .NET framework. An overview of supported versions is provided in the Exchange Server Supportability Matrix.
  • Further details about the installation of the add-in can be found in the Outlook Add-In Installation and Group Policy manual. There, the installation with the MSI file for software distributions is also addressed.

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Here you can find all versions that are required to upgrade to the current version. When upgrading, be sure to follow the installation and upgrade instructions for the respective version, as you may need to make manual changes. Also note that changes that you must make when upgrading from version 7.6 to 8.0, for example, are also required for a direct upgrade from 7.6 to 8.5.

The current version is available under Software Download.

Microsoft Report Viewer

Since the download has been officially discontinued, but it is needed for setups up to NoSpamProxy version 13.2 you can download it here

13.1 (Schneller Kanal)
13.1 (Regulärer Kanal)
13.0 (Schneller Kanal)
13.0 (Regulärer Kanal)
12.2 (Schneller Kanal)
12.2 (Regulärer Kanal)
12.1 (Fast Channel)
12.1 (Regular Channel)
12.0
11.1
11.0
10.1
9.2
8.5

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Version 11.1.179 was released on 6.1.2017. It is a maintenance release which fixes the following bugs and introduces new features:

New / changed
=============

  • Improved sorting of mail addresses on the ‚Users‘ node
  • Wording in the Change password template
  • The Reserver DNS filter now punishes „localhost“ responses for Domains
  • Performance of automatic user import

Fixed issues
============

  • Error message „An attempt to enable the DNSSEC resolver using the servers (null) and (null) failed
  • Error „The names specified in the certificate (names) do not match one of the expected host names“
  • Attachments vansished after PGP decryption under certain cirumstances
  • Several DNS issues
  • An issue with the Level of Trust System
  • Missing PGP key tab on partner node when only NoSpamProxy Encryption is licensed
  • Error „Invalid algorithm specified“ when signing a mail
  • A TLS issue
  • Missing notifications about new mails on hold
  • Error related to BASE64 Decoding
  • Error message „Nullable object must have a value.“
  • Issue with a high port number on inbound mails
  • Issue that public mail provider domains where incorrectly set to a dynamic trust Level
  • NullReferenceException in the File Synchronization Service
  • Issue with mails using a japanese character set
  • Header based routing did not work
  • Error in the DKIM verification

The version can simply be installed over the existing version. However, be sure to follow the general update instructions if you have configured a proxy server.

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Version 11.1.244 was released on 15.3.2017. It is a maintenance release which fixes the following bugs and introduces new features:

New / changed
=============

  • Improved the wording in one of the templates
  • Improved DNS retry behaviour
  • Applying a DKIM signature no longer removes the original DKIM signature, if present
  • When a mail has multiple DKIM signatures, all those signatures are checked now.
  • Improved timeout behaviour during mail reception
  • Improved retention period for large files by adding „Never clean up files“
  • Improved SMTP logging for inbound mails
  • Improved database Access
  • Improved editor for disclaimer templates by adding several new font sizes
  • Disabled DNSSEC validation for RBL lookups
  • Improved Word to PDF conversion
  • Changed timeout behaviour in the RBL filter
  • Also Inbound mails can now be encrypted.

Fixed issues
============

  • Fixed issue with TLS Best practices
  • Fixed an issue with PDF Mail where only the attachment should be encrypted
  • Fixed an issue with very long usernames in the automatic user Import
  • Fixed an issue where not all required features where displayed with a license that contained not all Features
  • Fixed an issue where the CYREN action would not block a mail containing a malware
  • Fixed an issue where the PowerShell cmdlets would use a proxy to connect to the Intranet Role
  • Fixed an issue where manually rescanning large files caused an error in the event log
  • Fixed error message „The added or subtracted value results in an un-representable DateTime.“
  • Fixed several issues with the Level of trust replication
  • Fixed an issue with the installation path of the Web Portal being ignored during Setup
  • Fixed an issue where the local users could not be updated
  • Fixed an issue where NoSpamProxy would try to write entries to the event log consisting of more than 32.000 characters
  • Fixed an issue where NoSpamProxy would incorrectly enable encryption for Signature-Only certificates
  • Fixed an issue which prevented the upgrade of the Web Portal
  • Fixed an issue in the Mail serialization process which would lead to aborted SMTP Connections
  • Fixed an issue where linked attachments could not be downloaded from the Web Portal
  • Fixed several issues with the DNS Resolution
  • Fixed an issue where user settings could not be downloaded by the Outlook Addin from the Web Portal
  • Fixed an issue where a disclaimer would not be rendered at the correct Position
  • Fixed an issue in the content filtering Framework
  • Fixed an issue where a disclaimer would not be attached to a mail at all
  • Fixed an issue where the ICAP filter would not remove a malware from a mail.
  • Fixed an issue where a PGP key attached to mail prevents the delivery of that mail
  • Fixed an issue where the DE-Mail configuration was not visible when only a partial license was installed
  • Fixed an issue where the conversion of a mail to PDF failed
  • Fixed error message „Value cannot be null.“ during TLS handshakes
  • Fixed an non-localized error message in the Web Portal
  • Fixed an issue with the Get-NspUser cmdlet

The version can simply be installed over the existing version. However, be sure to follow the general update instructions if you have configured a proxy server.

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From version 11.0

SQL Server 2005 and 2008

Please check the SQL version you are using before upgrading. If Microsoft SQL 2005 or 2008 is still in use, an update to at least SQL 2008 R2, preferably SQL 2014, must be carried out before installing version 11.1. Before the SQL upgrade, stop the NoSpamProxy services in the Windows services to stop the database access. When upgrading, make sure that the bit version matches. SQL 2005 was typically installed in 32-bit.

You can get SQL 2014 Express here: https://www.microsoft.com/de-de/download/details.aspx?id=42299

Upgrade NSP

Please always follow the instructions in the installation manual!

When updating from version 11 to version 11.1, all settings and user information are retained during the update with one exception. The following manual activities must be carried out after the update:

If you have used the “Reverse DNS Check” action, you must reactivate it after the update. You will now find this function on the “Filter” tab.

Furthermore, you should check the completeness of the content filters for security reasons.

From version 10.1

When updating from version 10.1 to version 11.1, all settings and user information are retained during the update.
The group “NoSpamProxy Disclaimer Administrators” is added to use the NoSpamProxy function disclaimer. Please add all users who should manage the templates and rules of the disclaimers to this user group. After upgrading to version 11.1 please check the instructions on the start page in NoSpamProxy and follow the instructions.

Best Practices

If you do not use the Web Portal, please skip this point:

  1. Update all web portals first. The order is not important.
  2. Update all Gateway Roles that are not installed on the same system as the Intranet Role.
  3. Update the system with the Intranet Role last.

Email templates

The templates for automatically created emails are overwritten and should be saved beforehand to be on the safe side. With the new template system you can now make your graphical adjustments directly in the NoSpamProxy interface under “Preferences”. These settings will be kept for future updates or upgrades.