Today, based on feedback, we’ve lowered the timeout to 24 hours. In the future, we are planning more improvements, although we do not have any dates or details to share at this time. Thank you for the continued feedback.IIR supported this idea ·IIR commented
Same problem : No excuse for the bounce to be after 48 hours with no warning to the sender until the queue expires.
We can not wait 48 hours to have an error of no delusion. Office 365 is for professionals!