Dynamic
distribution groups are mail-enabled Active Directory group objects that are
created to expedite the mass sending of email messages and other information
within a Microsoft Exchange organization.
Unlike
regular distribution groups that contain a defined set of members, the
membership list for dynamic distribution groups is calculated each time a
message is sent to the group, based on the filters and conditions that you
define. When an email message is sent to a dynamic distribution group, it’s
delivered to all recipients in the organization that match the criteria defined
for that group.
Use Case
Using Office356 Admin GUI you can create a multiple
conditions in custom attribute to filter the AD group objects
Solution
Here you will find a PowerShell script functions code snippet
example how to achieve this
$name - string object your group name
$custom - string object with values separated by semicolon ";" "Test1; Test2; Test2"
log - is a function for logging messages, you will need to implement it by yourself
function CreateDynamicDistributionGroup($name, $custom)
{
log("Creating
Dynamic distributiongroup " + $name)
$result = $false;
$custom = $null
try{
$results = Get-DynamicDistributionGroup
-Identity $name -ErrorAction
SilentlyContinue
if($results -eq $null)
{
# Create new DynamicDistributionGroup
$displayName = $name
$alias = CreateFriendlyAlias($name)
$custom= FormatDynamicPropertyArray($custom)
$result =
New-DynamicDistributionGroup -Name $name -Alias $alias -IncludedRecipients
"MailboxUsers"
$result = Set-DynamicDistributionGroup
-Identity $alias -ManagedBy $appSettings["DefaultDistributionGroupOwner"] -Notes $notes
$result =
Set-DynamicDistributionGroup -Identity $alias -IncludedRecipients "MailboxUsers" -ConditionalCustomAttribute1 $custom
$result = $true
}
else
{
log("DistributionGroup " + $name + " already
exist")
}
}
catch [Exception]{
log("Error creating distributiongroup
" + $name + " Technical error: " + $_.Exception.Message)
}
return $result
}
function FormatDynamicPropertyArray($value)
{
$newValueArray = @();
if($value)
{
$values = $value -split ";"
$values | ForEach-Object{
$newValueArray += $_.ToString()
}
}
return $newValueArray
}
Have a good day! :)
