I have a single internal user who is receiving the following NDR when sending mail to a mail enabled public folder. It is fine for all other users, internal and external. I'm waiting to hear back from the user to try and delete the cached version of the email address from Outlook and also test from OWA to see if they see the same result.
Delivery has failed to these recipients or groups: Public Folder (email@example.com) There's a problem with the recipient's mailbox. Please try resending the message. If the problem continues, please contact your helpdesk. Diagnostic information for administrators: Generating server: server.domain.worldwide firstname.lastname@example.org #554 5.2.0 STOREDRV.Deliver.Exception:AccessDeniedException.MapiExceptionNotAuthorized; Failed to process message due to a permanent exception with message Cannot complete delivery-time processing. 16.55847:92110000, 17.43559:000000009E02000000000000BB00000000000000, 255.23226:C42F0000, 255.27962:0A000000, 255.27962:0E000000, 255.27962:0A000000, 255.27962:9E000000, 255.17082:D6040000, 0.18273:00000000, 4.21921:D6040000, 255.27962:FA000000, 255.1494:43000000, 255.1238:0F010480, 6.21970:0F0104800B003A660F010480, 4.3010:0F010480, 4.3010:0F010480, 4.3650:0F010480, 4.3010:0F010480, 4.3010:0F010480, 4.3650:0F010480, 4.23921:EC030000, 6.21970:0F0104800300C4660F010480, 4.23921:EC030000, 6.21970:0F0104800201E13FB0840110, 4.23921:EC030000, 6.21970:0F010480030060671A010480, 0.22086:0F010480, 0.26000:0300DD3F, 4.4580:05000780, 0.26640:0F010480, 4.4408:05000780, 4.7637:D8040000, 0.49797:40001900, 4.5093:D6040000, 4.5318:D6040000, 4.10104:D6040000, 0.57449:0F010480, 4.6025:05000780, 4.5257:05000780, 4.4606:D6040000, 255.1750:00000000, 0.26849:0F010480, 255.21817:D6040000 ##