Connector for Microsoft Exchange - Troubleshooting

MediaGateway configuration

No access to Intrexx MediaGateway

If errors occur when testing the connection to the administrator account, please check the following points. To successfully log in, the following login information needs to be entered correctly:

  • MediaGateway connection data

    Make sure that the connection data entered for the host and port are correct. The address of the server where the Intrexx MediaGateway is installed should be entered as the host address. If the Intrexx MediaGateway is not located on the same server as Intrexx, check whether the server is generally accessible, i.e. available in the network or can be accessed via ping. The specified port (default 8087) must be available and may not be blocked, e.g. by a firewall.

  • MediaGateway Password

    The default password after installing the Intrexx MediaGateway is ""1234"". If it is not possible to log in with it, the password u. U. modified. If you have forgotten this password, please contact the support team at INTREXX GmbH.

  • MediaGateway service

    When MediaGateway is installed successfully, a Windows service called Intrexx MediaGateway Server is created. Check whether the service was started and is running correctly.

No access to Exchange account

If errors occur when testing the connection to the Exchange account, please check the following points.

Exchange 2010 / 2016

  • Username and password

    Specify the username and password of the Exchange account here. The data are the same as those used for logging on to the Windows computer.

  • Email

    The email address assigned to this account must be entered here.

  • Server URL

    Check the Exchange Server URL as well. Use the fully-qualified domain name. As a rule, the URL begins with the protocol https://, followed by the fully qualified server name and ews/Exchange.asmx. Example: https://mailserver.example.org/ews/Exchange.asmx. If the URL is correct, use ping, telnet or nslookup in a command line to check whether the server can be reached from the current computer.

  • Exchange account blocked

    When testing the login information, the account can be locked after multiple failed attempts. In this casse, contact your administrator to unlock the account once more.

  • Initialize mailbox

    To initialize the mailbox for newly created Exchange accounts, the account needs to be accessed once via OWA or Outlook.

  • Outlook and OWA

    Has OWA been installed on the Exchange Server and has its functionality been started correctly. Furthermore, the virtual directory ""/exchange"" must be available in the IIS of the Exchange Server. If this is not the case, please contact your Exchange administrator. For reasons concerning the system security, accessing the virtual directory ""/exchange"" can be locked or only be callable from certain computers/IP addresses. Check the access permissions in the ISS of the Exchange Server.

Kerberos - Exchange 2010 / 2016

Modify EWSFindCountLimit

For security reasons, there is a limit on the maximum number of objects that can be taken into account during a request from Exchange Server 2010. If a query exceeds this restriction, no results are returned. The maximum amount is determiend in the property ""EWSFindCountLimit"" of the ""ThrottlingPolicy"". From Exchange 2010 SP1, ""EWSFindCountLimit"" in the ""DefaultThrottlingPolicy"" is set to 1000 by default. If, for example, the Inbox folder contains 5000 messages and EWSFindCountLimit is limited to 1000, a query for this folder will return no results. Only when the limit is set to at least 5000 can objects in the Inbox be requested. The value for ""EWSFindCountLimit"" can either be defined globally or for individual mailboxes. With the following commands, which need to be performed in the Exchange Management Shell, the limit can be modified.

  • Global

    • Get-ThrottlingPolicy

    • Identify the name of the default policy in the output (e.g. DefaultThrottlingPolicy_3f6fa3c1-2bf1-4b54-a221-534d03203807)

    • Set-ThrottlingPolicy <PolicyName> -EWSFindCountLimit 10000 (or $NULL for unlimited)

    • iisreset (restarts the IISso that changes are effective immediately)

  • Per mailbox

    • New-ThrottlingPolicy -Name "IntrexxThrottlingPolicy" -EWSFindCountLimit 10000 (or $NULL for unlimited)

    • Set-Mailbox <UserName> -ThrottlingPolicy "IntrexxThrottlingPolicy" (must be executed for every user/mailbox that accesses Exchange via Intrexx)

    • iisreset

Calendar plugin

Recurring appointments

Serial appointments can only be accessed if a date range is specified when querying the "Appointment" table. To do this, the "StartDate" and "EndDate" fields must be filtered.

Sorting appointments

If the "Appointment" table is filtered by start and end date, the appointments from the Exchange 2010 / 2016 server are always delivered sorted by start date in ascending order. Custom sortings in the applications or in the browser are not supported in this case.

IIS-Server

If you use an IIS server for your Intrexx portal, the following configurations may be required for use with the Intrexx MediaGateway.

File up and downloads

To upload and/or download Exchange file attachments, e.g. in emails, the file size limits may need to be adjusted. To do that, open the Information Services (IIS) Manager and adjust the ASP limit properties:

  • For the upload: Limit for entity bodies in request (in bytes)

  • For the download: Response buffer limit (in bytes)

Maximum query string

In the "Exchange - Resource" application, it may be necessary to increase the length of the query string when querying several overlapping resources. You can recognize this by the fact that the error "Http Error 404: Not Found" is returned in the browser when trying to edit overlapping resources. In this case, proceed as follows:

  • Open the Information Services (IIS) Manager

  • Change the feature settings for request filtering: Maximum length of a query string (in bytes)