There are newer spammers lately, they use such nicknames --> <xxxxx.ru>, <xxxx.yyyy.org>, <xxxxxxx.yyyy.zzz:411> etc.
I've added to my hub NI-pattern: "!addpattern NI "%a+[.]%a+" -p-1 -a32".
It works very well and now these spammers will not be able to go to my hub.
You can deal with these spammers using this pattern.
Regards,
sergius_s