Although still listed as “In Development“, the Enhanced non-delivery reports (NDRs) are now available in Exchange Online. The Enhanced NDR present a great improvement to both end users and Office 365 administrators. The new NDRs are intended to make it easier for the end-user to understand why their message was not delivered, and the added… Read More »
With regards to the recent announced support for e-mail messages up to 150 MB it is important to note that the new limits only applies to non-transcoded messages that is handled in the Office Outlook client. When a message is routed between mail systems, overhead may be added due to transcoding, or Base64/MIME conversion. Arriving… Read More »
Until recently the largest allowed e-mail message size in Office 365 was 25 MB as the public “softlimit”, and a 35 MB technical “hardlimit”. Although most e-mail messages are much smaller than the 25 MB limit, attaching files to an e-mail will quickly get you over the message size limit, resulting in a Non-Delivery Report… Read More »