[SURBL-Discuss] Why are subdomains not blacklisted?

[Kelly Jones]

I received two separate spams advertising
"uztiuqhcsgdnhsx.kennevur.com" and "678.com.plaweresoft.com" as the
domains.

multi.surbl.org lists the domains as blacklisted:

> host kennevur.com.multi.surbl.org
kennevur.com.multi.surbl.org has address 127.0.0.86

> host plaweresoft.com.multi.surbl.org
plaweresoft.com.multi.surbl.org has address 127.0.0.118

but not the subdomains:

> host uztiuqhcsgdnhsx.kennevur.com.multi.surbl.org
Host uztiuqhcsgdnhsx.kennevur.com.multi.surbl.org not found: 3(NXDOMAIN)

> host 678.com.plaweresoft.com.multi.surbl.org
Host 678.com.plaweresoft.com.multi.surbl.org not found: 3(NXDOMAIN)

Why? Wouldn't it be easy/sensible to wildcard the blacklist to include
these?