Re: If anythingAnd Everyything@yourdomain.co.uk is forwarded spam?
Well, after 15 years of using the same catchall/domain, I actually get very few such emails. The vast majority of the spam I get (and really there isn't much) is to specific addresses identifiable as having been leaked by some company or other.
Anyway, firstly the base address I have (anything@my-domain.com) is never used. Anything that comes directly to my-domain.com is spam and is filtered first.The catch-all is of the format anything@my-account.my-domain.com. That is a harder one for spammers to randomly generate stuff for, because they won't know the my-account bit to add on to the domain.
That said, I do get occasional emails like that, likely from spam lists taking one of my compromised addresses and changing the prefix to something random. Perhaps a few every month, usually in a short burst. Again, these are easy to spot because they will not be filtered into a specific folder and instead will land in the (rarely used) general inbox. I just delete them.
So, it's easy, provided one is careful with one's email address in the first place, which I have been. My wife, on the other hand, was not so careful and was receiving hundreds per day to her account before I closed it.
I've just checked my trash folder (last did about a week ago) and there are only 72 entries, mostly ones I recognise as knowlingly compromised as mentioned first above. For an email I've used for 15 years, and given to hundreds of people and companies, that's not bad going.