The end of StudiVZ and MeinVZ

They are finally shutting down (german article) StudiVZ and MeinVZ. These were once the most popular social networks in Germany before Facebook became popular.

Published on 2022-03-22, 16:16 +0000

Dynamic distribution group based on security group membership

I wanted to create a dynamic distribution group in Exchange 2019 and wanted to include two kinds of users:

  1. Users where the Company field has a specific value
  2. Users that are members of a specific security group

The motivation was that our company has several sites. The Company states if a user is member of a site. And there are also users, that move between the sites. These users should be added using the security group.

To achieve this, I created the following recipient filter for the distribution group (indentation included for better readability):

                (Company -eq 'My company')
                (MemberOfGroup -eq 'CN=my-group,OU=groups,DC=mycompany,DC=local')

                    (RecipientType -eq 'UserMailbox')
                    (RecipientType -eq 'MailUser')

    -and (-not(Name -like 'SystemMailbox{*')) -and (-not(Name -like 'CAS_{*')) -and (-not(RecipientTypeDetailsValue -eq 'MailboxPlan')) -and (-not(RecipientTypeDetailsValue -eq 'DiscoveryMailbox')) -and (-not(RecipientTypeDetailsValue -eq 'PublicFolderMailbox')) -and (-not(RecipientTypeDetailsValue -eq 'ArbitrationMailbox'))-and (-not(RecipientTypeDetailsValue -eq 'AuditLogMailbox')) -and (-not(RecipientTypeDetailsValue -eq 'AuxAuditLogMailbox')) -and (-not(RecipientTypeDetailsValue -eq 'SupervisoryReviewPolicyMailbox'))

The import part is (Company -eq 'My company') -or (MemberOfGroup -eq 'CN=my-group,OU=groups,DC=mycompany,DC=local'). The long part at the bottom is the default filter.
There are some important things:

  • You must specify the distinguished name for the group
  • The users must be direct member of the group, nested groups do not work.

But hey, it works :)

Published on 2022-03-16, 18:38 +0000

RMV ticket machine in Wiesbaden: Bad request

I like to take photos of machines where the user interface failed and you can see some details behind it.

This is the upper display of a RMV ticket machine at the Wiesbaden-Schierstein railway station on 2021-08-17:

Bad request on ticket machine

Normally, the upper display shows advertisements and upcoming train departures. We can see that these information are displayed using a website and a web browser running in full screen mode. By the way the fonts look, this should be some Linux system.

Published on 2022-03-12, 16:15 +0000

Windows Server 2022 in WSUS

We installed our first server with Windows Server 2022. We didn't find Server 2022 as a product in WSUS. After googling, I found out that Windows Server 2022 is listed as Microsoft Server operating system-21H2 in WSUS:

WSUS Products and Classifications for Windows Server 2022

Published on 2022-03-08, 11:47 +0000

"Mandatory" errors when mail-enabling user

I tried to mail-enable a user, but I got the following error messages:

Database is mandatory on UserMailbox
(In german: Database ist für UserMailbox verbindlich)


ExchangeGuid is mandatory on UserMailbox
(In german: ExchangeGuid ist für UserMailbox verbindlich)

Using ADSI Edit, I found out that the user's msExchHomeServerName attribute contained a value pointing to a server not existing anymore. After deleting the attribute's value, I was able to mail-enable the user.

Published on 2022-03-07, 18:46 +0000