Hello and welcome to our Knowledge Base. Our experts provide answers to the most frequently asked questions of our customers. Start your information search here to find your answer quickly and easily.
Please enter your query or select one of the above categories.

Knowledge Base Exchange Server Toolbox


To use the search function, you need JavaScript enabled.

All entries (Page 1 / 3)
How can I limit the receive connections for Microsoft Exchange?

  Open powershell and type: Set-ReceiveConnector -identity "<IDENTITY>" -MaxInboundConnection 20

 The MaxInboundConnection parameter specifies the maximum number of inbound connections that this "Receive Connector" serves at the same time. The default value is 5000. The valid input range for this parameter is 1 to 2147483647. To disable the inbound connection limit on a "Receive Connector", enter a value of unlimited.

  Open powershell and type: Set-ReceiveConnector -identity "<IDENTITY>" -MaxInboundConnectionPerSource 10

 This parameter specifies the maximum number of inbound connections that this "Receive Connector" serves at the same time from a single IP address. The default value is 100. The valid input range for this parameter is 1 to 10000. To disable the inbound connection per source limit on a "Receive Connector" enter a value of unlimited.

How do I update ClamAV signatures?
Or is this done automatically?

The signaturs of ClamAV are updated automatically every 3 hours by the "Exchange Server Toolbox" service.
You may trigger an update manually in "Exchange Server Toolbox" in "Anti Virus Options".

How can I see which mailboxes the "Exchange Server Toolbox" recognizes for licensing.

The "Exchange Server Toolbox" considers all user mailboxes on the exchange server but without room and device mailboxes.
Please goto "About" page in ExchangeServerToolbox to see how many mailboxes are available.
You can identify which and how many mailboxes the "Exchange Server Toolbox" considers by sending an Lightweight Directory Access Protocol (LDAP) query.
To do so, open "Active Directory users and computers" on the server and right-click on your domain. Select find from the context menu and select "Custom Search" in the "Find:" drop down option.
There you have to select the Advanced tab, paste the following query into the "Enter LDAP query:" field and press Find Now:


What when the demo version of the "Exchange Server Toolbox" expires?

In this case the "Exchange Server Toolbox" will start sending notification mail to administrator accounts and after some time it will stop processing rules including anti-spam and anti-virus rules.

Is the licence of "Exchange Server Toolbox" restricted to a number of mailboxes or is the license for one Exchange Server?

The number of mailboxes available AND installations per Exchange Server are depending on your "Exchange Server Toolbox" license.
There are licenses that reach from up to 10 mailboxes up to an unlimited amount of mailboxes.
For more information on different "Exchange Server Toolbox" Editions and license offers refer to:

Although I have purchased a full version of "Exchange Server Toolbox", it still shows "UNREGISTERED" in the window title. Why?

There are 3 possible reasons why "Demo version" still shows up:
1. You did not download and install the full version from the URL you received after the purchase.
2. You have accidentally installed the trial version again. (Have you been asked for a installation key?)
3. You have installed the full version to a different folder than the trial version, which is now still on your disk.

How do regular expressions work in the "Exchange Server Toolbox"?

The "Exchange Server Toolbox" uses .Net regular expressions with the options IgnoreCase and Singleline set to true.
Please don't use ^ or $ because the Multiline option is not set.
A tool for testing .NET regular expressions can be found here:

I got an "unable to relay" error on using the auto reply rule action. How can I solve this problem?

When the "Exchange Server Toolbox" tries to send auto reply messages, it uses the Exchange Server to send these mails over SMTP. Since by default the Exchange Server rights are restricted, the "Exchange Server Toolbox"may not be allowed to do this. Therefore you have to configure your Exchange Server to allow the "Exchange Server Toolbox" (i.e. localhost) to send mails via Port 25 or 587.

Do I need to open any additional ports for the integrated SpamAssassin?

In case the required ports are not open, SpamAssassin scans will take much more time - which may cause a timeout.

The integrated SpamAssassin uses DNS (target port 53, TCP and UDP) for blacklist (RBL) requests. You also need to allow requests to target port 2703 (TCP) for Razor2. Otherwise spam scans may last longer than a minute. Alternatively, you may disable Razor2:
- Create a CF file like "XMySettings.cf" (text files) and put "score RAZOR2_CHECK 0" in it.
- Put this file in "C:\ProgramData\JAM Software\spamdService\sa-config\"

I installed the tiral version of the software. I have purchased the full version.. What shall I do?

Please run the setup of the licensed full version.
Please do not uninstall the previous installed trial version.
All settings will be retained.

Is it possible to alter the standard SpamAssassin rules? So i can weigh a rule with less, or more points.Is there a way to update SpamAssassin or ClamAV, or is this happening automatically?

Yes, you can adjust the SpamAssassin rules as you like.
In Exchange Server Toolbox you can use the build in custom SpamAssassin config file editor which you can find under Spam Options to create a .cf-file suited to your needs.

For further references see:

Alternatively you can create a .cf-file manually and store it together with all the other .cf-files.
We recommend to use the letter "X" as prefix for the name of your CF-file (like"XMyRules.cf").

"ClamAv in a Box" and "SpamAssassin in a Box", also integrated in SmartPOP2Exchange and Exchange Server Toolbox already update their rules / virus signatures every 3 hours automatically.

How do I setup Exchange Server Toolbox to use blocklists?

The integrated SpamAssassin does automatically use RBL 's.You can see this by having a look at the mail header of a spam mail scanned by the Exchange Server Toolbox or SmartPOP2Exchange:
* 0.9 RCVD_IN_PBL RBL: Received via a relay in Spamhaus PBL
* -2.0 AWL AWL: From: address is inthe auto white-list