As stated previously, these addresses are not gained through brute force, they have been leaked. If they were brute force, I would recieve multiple spam to
differentrandomletters@mydomain.co.uk, as it is, the spam goes to littlewoods@, ritzclub@, totesport@ etc, for most of the casinos I've ever registered with.
I got another one today, cc'd to;
plasticpaddy57@***********.com
plato@***********.co.uk,
playboy@***********.co.uk,
player-a-status@***********.com,
platins@***********.lv,
player71@***********.pl,
plasticoter@***********.com,
platon.sandrine@***********.fr,
player81@***********.ro
Again, 9 addresses, just covering the first 2 letters.