Yes, I was sending to support@ccleaner.com. It is the correct address. I had clicked on a link on their website to email them, and that was the address that was put into the email. I know that they are part of piriform and I believe that I could contact them that way. Maybe I should try that and see what happens. But they have confirmed that the address I was using is correct.
If the code means "Address Does Not Exist", then it is puzzling that the message from Googlemail says that my address is disabled. I am trying to get Ccleaner to look into it further as it seems more and more that it must be their system that is at fault in some way. If I receive anything interesting from them I shall post it on here.
