Couldn't you use your small size to an advantage, though? For example, when I ran a mail server over a decade ago for a small business, there were a couple doze

Couldn't you use your small size to an advantage, though? For example, when I ran a mail server over a decade ago for a small business, there were a couple dozen accounts. I would get email attacks that looked like they were being sent to "a@example.com", "b@example.com", "c@example.com", etc. Anything that went to these obviously bogus addresses, was spam and could be removed from the legitimate accounts (and blacklisted, of course). I wonder if there are other ways you could use the small number of accounts as an advantage?