The sender is added to my contacts; I have received emails from the sender daily for the last 3 years with no prior issues, the emails are not going to my junk mail folder or any other folder, the sender is also on my safe senders list; I have checked with the sender to ensure the emails were sent and also tried to resend them manually myself; I have no special filter settings or rules that might affect the receipt of emails--outlook is just not getting them all of a sudden.

I have tried every suggestion to get these emails that mysteriously stopped showing up in my inbox yesterday. It is particularly frustrating because they're not even going to junk mail; they just don't show up at all.

Any suggestions as what might have happened for me to suddenly stop receiving these emails on Wednesday morning?