dynamic distribution group memebers

You can use the LDIFDE.exe or CSVDE.exe tools to duplicate the filter string or conditions used in the Dynamic Distribution group to extract the users.

What fields and/or values are the filter in the groups?

e.g. Get all users in AD whose Company field matches 'myCompany' and export Account and Display name fields.
CSVDE -r "(&(objectClass=user)(company=myCompany))" -f output.txt -l samAccountName,DisplayName

i ran below command

$DDGMembers = Get-DynamicDistributionGroup "rbh"


Get-Recipient -RecipientPreviewFilter $rbhMembers.RecipientFilter | Select Name,PrimarySmtpAddr
ess,RecipientType | Export-Csv C:\Users\ymadmin\Desktop\rbh.csv -NoTypeInformation

but the output file which i am getting is empty

Because you have the command wrong.  Review the command I provided again.

can you please correct it for me i am less exp..

This...

$rbhMembers.RecipientFilter

Should be this...

$DDGMembers.RecipientFilter

i have corrected but still same error please review below command, i am getting blank excel file

Get-Recipient -RecipientPreviewFilter $ddgMembers.RecipientFilter | Select Name,PrimarySmtpAddress,RecipientType | Export-Csv C:\Users\ymadmin\Desktop\rbh.csv –NoTypeInformation

what i have recognised there is no information is stored in $rbhMembers due to that it is showing blank csv files.
we need to look for some other variable so that it can fetch info.

The only changes you need to make to the commands I provided are the items in bold; based on the dynamic distribution group name and the location you want to create the CSV file.

If there is nothing in the CSV file or in the $DDGMembers variable it's most likely because a) that dynamic distribution group doesn't exist (or the name was mistyped); b) you are not running the command in the Exchange Management Shell; or c) you do not have the proper permissions to run the commands.