Forum Discussion

MCT

May 15, 2020

Solved

Dynamic Distribution Group issue in Hybrid Exchange Setup

Dear Folks, For a customer, i have setup Hybrid Exchange based on 2013 CU 23 environment and many users have been migrated to Exchange Online. Now, I am facing an issue regarding Dynamic Distribu...

M. Sheeraz Ansari.
Jul 02, 2020
PeterRising

We finally able to solve this issue while working with Office 365 Support. It has taken a long time due to ping pong between on premises and Exchange Online teams. Anyway, after digging a while - solution turned out be an attribute issue, which solved our problem.

1. we re-run the Hybrid configuration wizard then following command was run on affected Dynamic Distribution Group.

Set-DynamicDistributionGroup DDG1@abc.com -RequireSenderAuthenticationEnabled $false

Hopefully, it may help someone out there. Thanks.

M. Sheeraz Ansari.

MCT

May 16, 2020

Ashkb and PeterRising

Thanks for your replies guys. Well, when i am running below command as per the article.

Set-DynamicDistributionGroup -Identity DDG1@abc.com -IncludedRecipients "MailboxUsers,MailContacts" -RecipientFilter {((RecipientType -eq 'UserMailbox' -or 'MailUser' -or 'MailContact'))}

I am getting this error:

"Cannot bind parameter 'RecipientFilter' to the target. Exception setting "RecipientFilter": "Invalid filter syntax.
For a description of the filter parameter syntax see the command help.
"((RecipientType -eq 'UserMailbox' -or 'MailUser' -or 'MailContact'))" at position 39."
+ CategoryInfo : WriteError: (:) [Set-DynamicDistributionGroup], ParameterBindingException
+ FullyQualifiedErrorId : ParameterBindingFailed,Microsoft.Exchange.Management.RecipientTasks.SetDynamicDistributi
onGroup"

Please suggest the correct Syntax of command. Thanks.

PeterRising

MVP

May 16, 2020

M. Sheeraz Ansari.

Try this command instead,

Set-DynamicDistributionGroup -Identity DDG1@abc.com -RecipientFilter {(RecipientType -eq 'UserMailbox') -or (RecipientType -eq 'MailUser') -or (RecipientType -eq 'MailContact')}

M. Sheeraz Ansari.
MCT
May 17, 2020
PeterRising

Thanks Peter, your suggested change in command has worked. After applying those changes on Dynamic Distribution Group (DDG), I have waited for around 4 to 6 hours and after applying changes on DDG - I still get same error/ NDR message.

Well, i also observed below Error details in the NDR, please see if it can help.

"Error Details
Reported error: 550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient DDG1@abc.com not found by SMTP address lookup
DSN generated by: DX2P273MB0172.AREP273.PROD.OUTLOOK.COM "

Thanks.
- PeterRising
  MVP
  May 17, 2020
  M. Sheeraz Ansari.
  
  Have you already followed the steps in this guide please?
  
  https://docs.microsoft.com/en-us/previous-versions/office/exchange-server-2010/jj150422(v=exchg.141)?redirectedfrom=MSDN
  - M. Sheeraz Ansari.
    MCT
    May 18, 2020
    PeterRising
    
    Hi Peter, Thanks for sharing that article. Well yes, i had already created the contact for that Dynamic Distribution Group and still getting the same error message. Well, I observed one strange thing with DDG email in On-Premises exchange is that - DDG group do not have email address with Proxy Address meaning only email address they have is DDG1@abc.com and a similar contact in Exchange Online (DDG1@abc.com) for users to select form GAL.
    
    I am suspecting, should i add proxy address for DDG groups manually like DDG1@tenantname.onmicrosoft.com?
    
    Just to clarify further, there is no issue with normal Distribution groups - On-Premises users and EXO users can send email to Distribution groups. Only issue with Dynamic Distribution Groups.
    
    Thanks.