distribution group, active directory, exchange, office 365

pramod1
pramod1 used Ask the Experts™
on
I have an old universal distribution group( investors) having email address as investors@domain.com

i had to create new universal distribution group(investors1) having email address as investors1@domain.com

but my boss wants to add investors@domain.com as an additional email in the new universal distribution group which is investors1

now my problem is i cant remove the old DL email address neither delete the old DL as it is being used by external people

so i was planning to put forwarding from old DL to neW DL

Is there any command i have to use or can use GUI

as in our company  AD objects on premise are synced through AAD sync to office 365

OR is there any method to create mail contact or something

basically he wants both the email address
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Justin YeungSenior Systems Engineer

Commented:
add the group investor into the group investor1, and add all user from investor to investor1.

basically nested the group.
timgreen7077Exchange Engineer
Distinguished Expert 2018

Commented:
You can't set a forward on a distribution list. If you want all the emails from the old DL (investors@domain.com) go to the new DL (investor1@domain.com), then you will need to create a mail rule (Transport rule). Is it necessary to have both of the DLs? If so look at the screen shot for a Mail rule you can create in the Exchange Admin Center.

rule
Jeremy WeisingerSenior Network Consultant / Engineer

Commented:
I think it would be easiest to delete the old DL and then just add the old DL's address to the new DL.
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Author

Commented:
The old dl has to kept along with the email address
timgreen7077Exchange Engineer
Distinguished Expert 2018

Commented:
since you have to keep the old DL and you cant set a forward on a DL, you will need to create the rule I mentioned if you want all the emails from old DL to go to new DL. Also you can add the new DL to the old DL and still get the emails.

Create rule

or

add the new DL to the old DL (nested)

Author

Commented:
Ok let me do tomorrow if anyquestions will ask

Thanks
Jeremy WeisingerSenior Network Consultant / Engineer

Commented:
Putting investors1 in the investors group should do the trick.

But why can't you delete old group? External people are just sending to the email address.

Author

Commented:
So if we delete the group how the investors email will wirk

Author

Commented:
Just thing if Ipsy new dl under old  dl

Will both email address work

Author

Commented:
When I created rule  it says error:
Sent to predicate does not allow distribution group -investors
Senior Network Consultant / Engineer
Commented:
So if we delete the group how the investors email will wirk
After deleting the old group, you can add the email address to the new group.
Just thing if Ipsy new dl under old  dl

Will both email address work
If you put investors1 in the investor group, both email addresses will still work.

Author

Commented:
Thanks I I added  new dl in old dl

Let me validate with user
timgreen7077Exchange Engineer
Distinguished Expert 2018

Commented:
Yes both DLs will get the emails if sent to the new DL. Note everything sent to the old DL will also be sent to the user in the new DL.
Jeremy WeisingerSenior Network Consultant / Engineer

Commented:
Glad to help. :)

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