# GET-DOMAIN.RC
#
#  Function to take a host name and extract the associated domain.

# Old-fashioned .city.state.us style US domains.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z]+\.[a-z][a-z]\.us$
{ LOCALDOMAIN=${MATCH} }

# Second-level domains belonging to ESPs which are generally responsible
# but have some bad clients.  SpamBouncer extracts the third-level domain
# for these because sometimes it blocks a specific customer.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z]+\.(adm02\.com|\
                aza\.pl|\
                chtah\.com|\
                hk\.com|\
                messages2\.com|\
                m0\.net|\
                rg3\.net|\
                rgc3.net|\
                rm02\.net|\
                rm04\.net|\
                rm05\.net|\
                rsc0[1-9]\.(com|net))$
{ LOCALDOMAIN=${MATCH} }

# Second-level domains belonging to dynamic DNS providers, web site
# redirectors, etc.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* ! LOCALHOST ?? ^(geocities\.com|\
                   www\.geocities\.com|\
                   tripod\.com|\
                   www\.tripod\.com)$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z]+\.(0catch\.com|\
                aax\.de|\
                ath\.cx|\
                bigsitecity\.com|\
                bravehost\.com|\
                ddl\.at|\
                dnsrd\.com|\
                do5\.us|\
                e3z\.de|\
                free\.fr|\
                geocities\.com|\
                hopto\.org|\
                i8\.com|\
                ly2\.com|\
                narod\.ru|\
                ocry\.com|\
                optus\.nu|\
                pp\.ru|\
                r8\.org|\
                tripod\.com|\
                uk\.com|\
                xaker\.ru|\
                z3z\.net)$
{ LOCALDOMAIN=${MATCH} }


# Third-level domains belonging to dynamic DNS providers, web site
# redirectors, etc.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z]+\.(pop\.com\.br|\
                p2p\.com\.hk)$
{ LOCALDOMAIN=${MATCH} }


# Domains that can be two-level, and can be three-level, where the
# assumption is that, if the second-level domain is three characters
# or longer, it should be used, and otherwise the third-level domain
# should be used.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z][-_0-9a-z]+\.\
               (at|ch|cl|de|hk|hr|jp|nl)$
{ LOCALDOMAIN=${MATCH} }

# Domains that can be two-level, and can be three-level, where the
# assumption is that, if the second-level domain is four characters
# or longer, it should be used, and otherwise the third-level domain
# should be used.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z][-_0-9a-z][-_0-9a-z]+\.\
               (be|br|cc|cn|dk|lb|md|ph|ru|st)$
{ LOCALDOMAIN=${MATCH} }

# The .ST domain
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][0-9a-z][0-9a-z]+\.st$
{ LOCALDOMAIN=${MATCH} }

# Two-level TLDs.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z]+\.(ac|aero|as|biz|by|ca|\
              cc|cd|com|coop|cx|cz|de|edu|es|exp|fi|fm|fr|geek|gov|hm|info|int|is|it|\
              llc|lnx|ltd|lv|med|mil|museum|name|net|nic|noc|nu|null|\
              org|pl|porn|pro|pt|ru|se|su|tk|travel|tv|us|ws|xxx)$
{ LOCALDOMAIN=${MATCH} }

# Three-level CCTLDs.
#
:0
* ! LOCALHOST ?? ^host\.example\.com$
* LOCALDOMAIN ?? ^example\.com$
* LOCALHOST ?? ([0-9a-z][-_0-9a-z]+\.)*\/[0-9a-z][-_0-9a-z]+\.\
            [0-9a-z][-_0-9a-z]+\.(ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|\
            at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|\
            bw|bz|ca|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cu|cv|cy|\
            cz|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|fi|fj|fk|fm|fo|fr|\
            ga|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|\
            hk|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|\
            ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|\
            ma|mc|md|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|\
            na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|\
            pa|pe|pf|pg|ph|pk|pm|pn|pr|ps|pt|pw|py|qa|re|ro|ru|rw|\
            sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|sv|sy|sz|\
            tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|\
            ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|\
            wf|ws|ye|yt|yu|za|zm|zw)$
{ LOCALDOMAIN=${MATCH} }