Some days ago, I noticed a sudden drop in the number of incoming mails. 

Now, suddenly, the number of mails I get is about 90% smaller. In other words, for every 100 messages I used to get, I get 10 now.

I have many aliases completely unrelated one from the other and senders are unrelated too so the average number of mails was almost constant and supposing that all of a sudden I get 90% less mails is statistically not possible.

I opened a ticket 3 days ago and updated it 8 times without hearing any response (which is something I never experienced in my 25+ years working in this field) , so I try this forum.

Is there anyone else experiencing this problem?