Forum Discussion
Office365 group triggers an NDR but delivers the mails to it's members
Since Office 365 Group act like both mailbox and DG, delivery is handled a bit differently for them. As the message suggest, it looks like the mailbox itself is full, thus generating the NDR. But parallel to delivering to the group mailbox, Exchange will expand the membership and deliver the message to any "subscribed" members. Overall I think this is the expected behavior, but you can always open a support case to confirm it.
Since Office 365 Group act like both mailbox and DG, delivery is handled a bit differently for them. As the message suggest, it looks like the mailbox itself is full, thus generating the NDR. But parallel to delivering to the group mailbox, Exchange will expand the membership and deliver the message to any "subscribed" members. Overall I think this is the expected behavior, but you can always open a support case to confirm it.
Hi Vasil,
Thanks for your reply, I ran the below command and I could see the size occupied is 3.6 GB
Get-Mailbox -GroupMailbox -Identity "groupid" | Get-MailboxStatistics | fl TotalDeletedItemSize,TotalItemSize
TotalDeletedItemSize : 258.2 KB (264,406 bytes)
TotalItemSize : 3.6 GB (3,865,657,378 bytes)How do I check it's limits??
You can use Get-Mailbox to check the quota... although the default one is 50GB, so unless you've played with it, this is a bit strange...
