Why is this powershell listing the distribution list when I have a condition to not list it?

Question

Get-DistributionGroup -ResultSize unlimited | where {($_.DisplayName -notlike 'SDL_*') -or  ($_.managedby -notcontains "*Organization Management*")} | ft displayname, managedby

I'm running the above powershell. I've used -notcontains, notequal, notlike and I'm still having distribution lists returned that contain organization management as an owner. What am I missing? I feel like Exchange for some reason added the role Organization management as an owner and that isn't an object the conditions are tracking for.

Answer 1

Ok, didnt realize this was Exo.
I just tested this and it worked:

Get-DistributionGroup -ResultSize unlimited | ?{$_.Managedby -ne 'Organization Management'} 

Answer 2

Hi @DavidAz

Do you mean the owner not a member of the default Admin role => Organization Management?

Please note that the ManagedBy parameter specifies an owner for the group. The owner you specify for this parameter must be a mailbox, mail user or mail-enabled security group (a mail-enabled security principal that can have permissions assigned).

Also, note that the managedby returns an array. You may need to get the members of the admin role firstly then match the members with them.

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Answer 3

This was the solution

[string]@($_.ManagedBy) -notmatch "Organization Management")}