I've had issues lately where users are not receiving large emails sent from the Internet. Looking at the message tracking logs, I see the following:
550 5.2.3 RESOLVER.RST.RecipSizeLimit; message too large for this recipient
I understand that this indicates the message size is too large and I know that I can raise this limit. However, I do not understand why senders are not receiving nondelivery reports in this case. The inbound message just seems to disappear, the recipient does not get it and the sender never knows about it. This is happened multiple times, so I doubt it is just someone's junk mail filter that is eating the delivery report.
Why would this be happening and what can I do about it?
Thanks in advance for your help.