Wow. Three weeks ago, I was stunned to see that my main Gmail account now receives slightly more than a thousand Spammails a day (~33'000 per month), but luckily only 1 to 2 make it to the inbox. Today, I checked again to see how many spammails I received in the last 30 days:
49'557
Great,
thank you all who contributed.
Rafael: Thank you very much, I was having a huge headache to solve the very same problem!