i have a distribution group called sales group and another distribution group called marketing.
under sales mail universal distribution group we have- email@example.com
under marketing universal distribution group we have marketing @domain.com and marketing1 @domain.com
can we add the marketing email addresses both of them under sales distribution group
i dont want to remove marketing email addresses under marketing group.
we have on premise AD and is synced through AAD sync to office 365 as these distribution groups are in office 365 portal.
i tried to add in office 365 directly but it threw error saying these email addresses already exist.