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1 #
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2 # lines start with a command token, following by argument tokens
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3 # tokens are separated by spaces or tabs
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4 #
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5 #
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6 # dnsbl:
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7 # second token is the name of this dnsbl
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8 # third token is the dns suffix used for the actual lookups
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9 # fourth token? is a string enclosed in single quotes, so it
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10 # is not really a token. This is the error message, with
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11 # up to two %s parameters for the client ip address.
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12 #
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13 # dnsbl_list:
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14 # second token is the name of this list of dnsbls
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15 # subsequent tokes are the names of the previously defined dnsbls
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16 #
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17 # env_from:
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18 # second token is the name of this envelope-from-map. There will
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19 # generally be multiple lines with the same name.
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20 # third token is the envelope from value from the smtp conversation,
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21 # or just the domain part that follows the @ symbol.
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22 # fourth token is BLACK, WHITE, or the name of a previously defined
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23 # envelope-from-map. BLACK causes mail from this sender to be
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24 # rejected with "no such user". WHITE causes mail to be accepted
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25 # and the dns based lists are ignored. DEFAULT may be used to override
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26 # the contents of other maps that are copied into this map, and
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27 # set that sender back to the default (not white or black listed,
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28 # and subject to dnsbl lookups).
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29 #
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30 # env_to:
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31 # second token is the envelope recipient value from the smtp conversation,
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32 # or just the domain part that follows the @ symbol.
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33 # third token is the name of a dnsbl-list, or WHITE or BLACK.
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34 # fourth token is the name of an envelope-from-map, or WHITE or BLACK.
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35 #
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36 # If either one is BLACK, mail to this recipient is rejected with
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37 # "no such user", and the dns lists are not checked.
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38 #
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39 # If the envelope-from-map name is WHITE, mail to this recipient is accepted
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40 # and the dns lists are not checked.
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41 #
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42 # If the envelope-from-map exists, the map is checked for the presence
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43 # of the sender. A WHITE or BLACK answer is definitive and the dns lists
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44 # are not checked.
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45 #
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46 # If the dnsbl-list name is WHITE, the dns lists are not checked and the
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47 # mail is accepted. Otherwise, the dns lists are checked and the mail
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48 # is rejected if any list has an A record for the standard dns based
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49 # lookup scheme (reversed octets of the client followed by the dns suffix).
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50 #
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51 #
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52 #
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53 #
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54 ##############################################
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55 # define the dnsbls to use
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56 #
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57 #
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58 dnsbl LOCAL blackholes.five-ten-sg.com 'Mail from %s rejected - local; see http://www.five-ten-sg.com/blackhole.php?%s'
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59 dnsbl SPEWS blackholes.spews.org 'Mail from %s rejected - spews; see http://www.spews.org/ask.cgi?x=%s'
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60 dnsbl SBL sbl-xbl.spamhaus.org 'Mail from %s rejected - sbl; see http://www.spamhaus.org/query/bl?ip=%s'
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61
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62
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63 ##############################################
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64 # define the (default and other) lists of dnsbls to use
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65 #
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66 dnsbl_list DEFAULT LOCAL SPEWS SBL
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67 dnsbl_list SIMPLE SBL
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68 dnsbl_list CUST1 SBL
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69 dnsbl_list CUST2 SPEWS SBL
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70
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71
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72 ##############################################
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73 # define the (default and other) env_from maps
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74 #
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75 env_from DEFAULT spammer@example.com BLACK
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76 env_from DEFAULT yahoo.com BLACK
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77
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78 # special list for the vp
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79 env_from TEST dummy-token DEFAULT # inherit the currently defined DEFAULT env_from mapping
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80 env_from TEST nai.com BLACK # the vp does not like nai
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81 env_from TEST yahoo.com DEFAULT #
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82 env_from TEST mother@spammyisp.com WHITE # suppresses dnsbl checking
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83
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84
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85 ##############################################
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86 # specify dnsbl_lists and env_from maps to use for specific recipients
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87 #
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88 env_to abuse@mydomain.com WHITE WHITE # no dnsbl, no env_from map
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89 env_to sales@mydomain.com SIMPLE NULL # sbl only, no env_from map
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90 env_to vp@mydomain.com DEFAULT TEST # allow mail from mom
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91 env_to old-emp@mydomain.com BLACK BLACK # return no such user even from backup mx machines
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92
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93 ##############################################
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94 # specify dnsbl_lists and env_from maps to use for clients domains
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95 #
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96 env_to mydomain.com DEFAULT DEFAULT
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97 env_to customer1.com CUST1 DEFAULT # all customer 1 domains use just sbl
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98 env_to customer1a.com CUST1 DEFAULT
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99 env_to customer1b.com CUST1 DEFAULT
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100 env_to customer2.com CUST2 DEFAULT # all customer 2 domains use spews and sbl
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101 env_to customer2a.com CUST2 DEFAULT
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102
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103
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104 ##############################################
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105 # you can also include nested config files
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106 # file names are single tokens, no embedded blanks
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107 #
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108 include dnsbl.conf # this will generate a recursive include file syslog error message
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