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Файловый менеджер - Редактировать - /usr/local/cpanel/scripts/rebuilddnsconfig

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#!/usr/local/cpanel/3rdparty/bin/perl # cpanel - scripts/rebuilddnsconfig Copyright 2022 cPanel, L.L.C. # All rights reserved. # copyright@cpanel.net http://cpanel.net # This code is subject to the cPanel license. Unauthorized copying is prohibited use strict; use warnings; use Cpanel::DNSLib (); use Cpanel::OS (); use Cpanel::FileUtils::Move (); use Cpanel::FileUtils::Copy (); use Cpanel::Path (); use Cpanel::StringFunc::Count (); use Cpanel::StringFunc::Match (); use Cpanel::SafetyBits (); use Cpanel::NameServer::Conf (); use Cpanel::NameServer::Utils::BIND (); use Cpanel::Validate::Domain::Tiny (); use Cpanel::DNSLib (); use Getopt::Std; $Getopt::Std::STANDARD_HELP_VERSION = 1; umask 0022; ######[ declare some globals ]##################################################################### # default location of zone files used for rebuilding named.conf my $def_basedir; # default location of named.conf my $def_namedconf; # default log directory for named my $def_logdir; # default location of pidfile my $def_pidfile = '/var/run/named/named.pid'; # Verbose variable, if set to "1" actions are reported to STDOUT. my $cpverbose = 0; # We sent this to fixrndc, if it sends it back that means we've got a loop my $selfcalled = 0; my %options = (); getopts( 'sfv', \%options ); if ( defined( $options{'v'} ) ) { $cpverbose = 1; } if ( defined( $options{'s'} ) ) { $selfcalled = 1; } if ( $selfcalled == 1 ) { print "Loop detected, exiting.\n"; exit; } ######[ set defaults based on distro/OS ]########################################################## $def_basedir = Cpanel::OS::dns_named_basedir(); # /var/named $def_namedconf = Cpanel::OS::dns_named_conf(); # /etc/named.conf $def_logdir = Cpanel::OS::dns_named_log(); # /var/log/named ######[ ensure base directory structure is created ]############################################### my ( $chrootdir, $binduser, $bindgroup ) = Cpanel::NameServer::Utils::BIND::find_chrootbinddir(); my $binduid = getpwnam($binduser) \|\| die "$binduser not in passwd file"; my $bindgid = getgrnam($bindgroup) \|\| die "$bindgroup not configured on the system"; # Set up directory structure if ( !-e $def_basedir ) { mkdir $def_basedir or die "Unable to create $def_basedir: $!"; chown $binduid, $bindgid, $def_basedir; } if ( !-e "$def_basedir/data" ) { mkdir "$def_basedir/data" or die "Unable to create $def_basedir/data: $!"; chown $binduid, $bindgid, "$def_basedir/data"; } if ( !-e $def_logdir ) { mkdir $def_logdir or die "Unable to create $def_logdir: $!"; chown $binduid, $bindgid, $def_logdir; } # Set up pid directory if ( !-e '/var/run/named' ) { mkdir '/var/run/named' or die "Unable to create '/var/run/named': $!"; } chown $binduid, $bindgid, '/var/run/named'; # create base chroot directories if required if ($chrootdir) { if ( !-e $chrootdir . '/etc' ) { mkdir $chrootdir . '/etc' or die "Unable to create $chrootdir/etc: $!"; } if ( !-e $chrootdir . '/var' ) { mkdir $chrootdir . '/var' or die "Unable to create $chrootdir/var: $!"; } if ( !-e $chrootdir . '/var/named' ) { mkdir $chrootdir . '/var/named' or die "Unable to create $chrootdir/var/named: $!"; } if ( !-e $chrootdir . '/var/named/data' ) { mkdir $chrootdir . '/var/named/data' or die "Unable to create $chrootdir/var/named/data: $!"; } chown $binduid, $bindgid, $chrootdir . '/var/named/data'; if ( !-e $chrootdir . '/var/run' ) { mkdir $chrootdir . '/var/run' or die "Unable to create $chrootdir/var/run: $!"; } if ( !-e $chrootdir . '/var/run/named' ) { mkdir $chrootdir . '/var/run/named' or die "Unable to create $chrootdir/var/run/named: $!"; } chown $binduid, $bindgid, $chrootdir . '/var/run/named'; } ######[ Setup Hint zone file if needed ]########################################################### if ( !-e "$def_basedir/named.ca" ) { Cpanel::FileUtils::Copy::safecopy( '/usr/local/cpanel/scripts/named.ca', "$def_basedir/named.ca" ); } if ( !-e "$def_basedir/localdomain.zone" \|\| !-e "$def_basedir/localdomain.zone" \|\| !-e "$def_basedir/named.broadcast" \|\| !-e "$def_basedir/named.ip6.local" \|\| !-e "$def_basedir/named.local" \|\| !-e "$def_basedir/named.zero" \|\| !-e "$def_basedir/named.rfc1912.zones" ) { # RFC1912 Cpanel::FileUtils::Copy::safecopy( '/usr/local/cpanel/scripts/named.rfc1912.zones', "$def_basedir/named.rfc1912.zones" ); system 'tar', 'xvf', '/usr/local/cpanel/scripts/rfc1912_zones.tar', '-C', $def_basedir; # uses new .tar without the ./named/ directory so we can use it for both if ($chrootdir) { system 'tar', 'xvf', '/usr/local/cpanel/scripts/rfc1912_zones.tar', '-C', $chrootdir . '/var/named'; } } ######[ create a brand new named.conf from a default template if needed ]########################## if ( !-e $def_namedconf \|\| -z _ ) { # no named.conf or zero bytes print "Installing default Bind configuration\n" if $cpverbose; #>>>>>[ Write default configuration w/ proper basedir ]>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> if ( open my $conf_fh, '>', $def_namedconf ) { foreach (&getdefault_nameddotconf) { s/###BASE_DIR###/$def_basedir/g; s/###PID_FILE###/$def_pidfile/g; print {$conf_fh} $_; } close $conf_fh; } clearcache(); # Reset ownership Cpanel::SafetyBits::safe_recchown( 'named', 'named', $def_basedir ); # Force $options{'f'} = 1; } my $dnslib = Cpanel::DNSLib->new(); my $needpid = 0; ######[> Ensure all .db's have an entry in named.conf and vice versa >]############################ # suck up all zones of the named.conf and zone dir in memory for fast parsing, heavy on mem side but better than thrashing hdd my %needtoadd; my $ndc_fh; my $namedconf_obj = Cpanel::NameServer::Conf->new(); $namedconf_obj->checkcache(); # start with a freshly rebuild conf file when force is specified (also happens when named.conf was empty) if ( $options{'f'} && $namedconf_obj->type() ne 'bind' ) { $namedconf_obj->rebuild_conf(); } my %current_zone_entries = map { $_ => 1 } @{ $namedconf_obj->fetchzones() }; opendir my $zone_dh, $def_basedir or die "Unable to read zone file directory $def_basedir: $!"; my @zonedir_contents = readdir($zone_dh); closedir $zone_dh; my %current_zone_files = (); foreach my $zonefile (@zonedir_contents) { if ( $zonefile =~ /^([\w\-.]+)\.db$/ && Cpanel::Validate::Domain::Tiny::validdomainname($1) ) { $current_zone_files{$1} = 1; } } my %bad_zones = %current_zone_entries; delete @bad_zones{ keys %current_zone_files }; delete $bad_zones{'.'}; my %missing_zones = %current_zone_files; delete @missing_zones{ keys %current_zone_entries }; # make sure all zones.db files have entry in named.conf # Add missing files to named.conf if ( scalar keys %missing_zones ) { print "Adding zones " . join( ' ', keys %missing_zones ) . "\n" if $cpverbose; $namedconf_obj->addzones( keys %missing_zones ); } # make sure all entries in named.conf have zone files if ( scalar keys %bad_zones ) { print 'Removing zones ' . join( ' ', keys %bad_zones ) . " from configuration, zonefiles missing\n" if $cpverbose; $namedconf_obj->removezones( keys %bad_zones ); } $namedconf_obj->finish(); ######[> Handle chroot setups >]################################################################### # This logic is required due to how bind-chroot symlinks /etc/named.conf to the chroot location # And how File::Copy will not follow the symlinks, but will recreate them instead if ( -l $def_namedconf ) { my $target = readlink $def_namedconf; print "Symlink detected: $target\n"; if ( open( $ndc_fh, '<', $target ) ) { unlink $def_namedconf; print "Restoring $def_namedconf from $target before proceeding\n"; Cpanel::FileUtils::Copy::safecopy( $target, $def_namedconf ); } else { print "Failed to read symlinked $def_namedconf [$target]. Cannot continue.\n"; exit 1; } } else { open( $ndc_fh, "<", $def_namedconf ); } open( my $ndf_fh, ">", $def_namedconf . '.rebuilddnsconfig' ); if ( !$ndc_fh ) { open( $ndc_fh, "<", $def_namedconf ); } my $inc = 0; my $firstline = 0; my $numbrace = 0; my $zonemarker = 0; my $cppcomment = 0; my $currzone = ''; my $skip_next_opening = 0; my $zonedir = Cpanel::DNSLib::find_zonedir(); while (<$ndc_fh>) { # Rudamentary comment exclusion. if ($cppcomment) { if (m/\\//) { $cppcomment = 0; } print $ndf_fh $_; next; } if (m/^\s\#/) { print $ndf_fh $_; next; } if (m/^\s\/\//) { print $ndf_fh $_; next; } if (m/^\s\/\/) { $cppcomment = 1; print $ndf_fh $_; next; } if ( $skip_next_opening && m/^\s\{\s$/ ) { $skip_next_opening = 0; $numbrace++; next; } next if m/bind.conf.wp/; next if ( m/\sinclude\s+/ && m/rndc.key/ ); if ( $needpid && m/pid-file/ ) { next; } if (m/\szone\s+["']([^"']+)/) { $zonemarker = 1; $currzone = $1; } elsif (m/\sinclude\s+["']([^"']+)/) { my $file = $1; my $filemtime = ( stat($file) )[9]; if ( -f _ ) { copytochroot( $file, $filemtime ); } } if ($zonemarker) { $numbrace += Cpanel::StringFunc::Count::get_curly_brace_count($_); if ( $numbrace == 0 ) { $zonemarker = 0; } if (m/(.[\s\t\;\{])file\s+(["'])([^"']+)(.)/) { my $postfile = $4; my $file = $3; my $prefile = $2; my $space = $1; my $relativedir = ''; my $fileold = $file; if ( !Cpanel::StringFunc::Match::beginmatch( $file, '/' ) ) { if ( $file =~ m/^([^\/]+)/ ) { $relativedir = $1; } } my $filename = $file; if ( $file =~ m/([^\/]+)$/ ) { $filename = $1; } my $filenew = $zonedir . '/' . $filename; if ( $file eq $filenew ) { print $ndf_fh $_; } elsif ( !Cpanel::StringFunc::Match::beginmatch( $file, '/' ) ) { $file = $filenew; print "Updating $fileold to $filenew\n"; #print $ndf_fh "${space}file ${prefile}${filenew}${postfile}"; } else { if ( !Cpanel::StringFunc::Match::beginmatch( $file, '/dev/' ) ) { $filenew = $zonedir . '/' . $filename; print "Updating $file to $filenew\n"; #print $ndf_fh "${space}file ${prefile}${filenew}${postfile}"; } else { $filenew = $file; print $ndf_fh $_; } } my $absfilename = ''; if ( $relativedir ne '' ) { $absfilename = Cpanel::Path::relative2abspath( $relativedir, $zonedir ) . '/' . $filename; } if ( $absfilename ne '' && -e $absfilename ) { $file = $absfilename; } my ( $fileinode, $filemtime ) = stat($file); my ( $filenewinode, $filenewmtime ) = stat($filenew); if ( !$filemtime && $currzone eq '.' ) { next if ($filenewmtime); $file = '/usr/local/cpanel/scripts/named.ca'; ( $fileinode, $filemtime ) = stat($file); print "Root hints zone missing. Using default.\n" if $cpverbose; } elsif ( !$filemtime ) { print "!! $file does not exist, unable to locate.\n"; print "!! Run /usr/local/cpanel/scripts/cleandns to remove zone without corresponding files.\n"; print "!! Or locate the proper zone file and place in $zonedir and rerun\n"; print "!! This script with the following options: /script/fixndc -fv\n"; next; } if ( !$filenewmtime ) { print "Moving $file to $filenew ...\n"; Cpanel::FileUtils::Move::safemv( $file, $filenew ); } elsif ( $fileinode != $filenewinode && ( $filenewmtime > time() \|\| $filemtime > $filenewmtime ) ) { # timewarp safe Cpanel::FileUtils::Copy::safecopy( $file, $filenew ); Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $filenew ); } copytochroot( $filenew, $filemtime ); next; } } # Match for zone and file declaration on one line. if ( m/.[\s\t\;\{]file\s+["'][^"']+/ && m/[\s\;]zone/ ) { m/(.[\s\t\;\{])file\s+["']([^"']+)(.)/; my $file = $2; my $space = $1; my $space2 = $3; my $relativedir = ''; my $currzone = ''; my $delim = '"'; if (m/\szone\s+(["'])([\w\-\.]+)["']/) { $zonemarker = 1; $currzone = $2; $delim = $1; } m/zone\s+(.)/; $numbrace += Cpanel::StringFunc::Count::get_curly_brace_count($1); if ( $numbrace <= 0 ) { $zonemarker = 0; } if ( !Cpanel::StringFunc::Match::beginmatch( $file, '/' ) ) { if ( $file =~ m/^([^\/]+)/ ) { $relativedir = $1; } } my $filename = $file; if ( $file =~ m/([^\/]+)$/ ) { $filename = $1; } my $filenew = $zonedir . '/' . $filename; if ( $file eq $filenew ) { print $ndf_fh $_; } elsif ( !Cpanel::StringFunc::Match::beginmatch( $file, '/' ) ) { $file = $filenew; print "Updating $file to $filenew\n"; #print $ndf_fh "${space}file ${delim}${filenew}${space2}"; } else { if ( !Cpanel::StringFunc::Match::beginmatch( $file, '/dev/' ) ) { $filenew = $zonedir . '/' . $filename; print "Updating $file to $filenew\n"; #print $ndf_fh "${space}file ${delim}${filenew}${space2}"; } else { $filenew = $file; print $ndf_fh $_; } } my $absfilename = ''; if ($relativedir) { $absfilename = Cpanel::Path::relative2abspath( $relativedir, $zonedir ) . '/' . $filename; } if ( $absfilename ne '' && -e $absfilename ) { $file = $absfilename; } my $mtime = 0; if ( -e $file ) { $mtime = ( stat(_) )[9]; if ( !-e $filenew ) { print "Moving $file to $filenew ...\n"; Cpanel::FileUtils::Move::safemv( $file, $filenew ); } elsif (( stat($file) )[1] != ( stat($filenew) )[1] && ( ( stat($filenew) )[9] > time() \|\| $mtime > ( stat($filenew) )[9] ) ) { # timewarp safe Cpanel::FileUtils::Copy::safecopy( $file, $filenew ); Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $filenew ); } } elsif ( $currzone eq '.' ) { next if ( -e $filenew ); $file = '/usr/local/cpanel/scripts/named.ca'; print "Root hints zone missing. Using default.\n" if $cpverbose; if ( !-e $filenew ) { print "Moving $file to $filenew ...\n"; Cpanel::FileUtils::Move::safemv( $file, $filenew ); } elsif (( stat($file) )[1] != ( stat($filenew) )[1] && ( ( stat($filenew) )[9] > time() \|\| $mtime > ( stat($filenew) )[9] ) ) { # timewarp safe Cpanel::FileUtils::Copy::safecopy( $file, $filenew ); Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $filenew ); } } else { print "!! $file does not exist, unable to locate.\n"; print "!! Run /usr/local/cpanel/scripts/cleandns to remove zone without corresponding files.\n"; print "!! Or locate the proper zone file and place in $zonedir and rerun\n"; print "!! This script with the following options: /script/fixndc -fv\n"; $filenew = ''; } if ( $filenew ne '' ) { copytochroot( $filenew, $mtime ); } } if ( !$inc ) { print $ndf_fh $_; } else { if ($firstline) { $firstline = 0; next; } $numbrace += Cpanel::StringFunc::Count::get_curly_brace_count($_); if ( $numbrace == 0 ) { $inc = 0; } } if ( $needpid && m/^\soptions\s/ ) { if ( !m/\{/ ) { #print $ndf_fh "{\n\tpid-file \"/var/run/named/pid\"\;\n"; $skip_next_opening = 1; } else { #print $ndf_fh "\tpid-file \"/var/run/named/pid\"\;\n"; } next; } } close $ndc_fh; close $ndf_fh; Cpanel::FileUtils::Copy::safecopy( $def_namedconf, $def_namedconf . '.prerebuilddnsconfig' ); clearcache(); Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $def_namedconf ); if ( $chrootdir ne '' ) { print "Updated $def_namedconf in chroot directory\n" if $cpverbose; if ( -e $chrootdir . $def_namedconf ) { if ( ( stat($def_namedconf) )[1] != ( stat( $chrootdir . $def_namedconf ) )[1] ) { Cpanel::FileUtils::Copy::safecopy( $def_namedconf, $chrootdir . $def_namedconf ); Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $chrootdir . $def_namedconf ); } } else { Cpanel::FileUtils::Copy::safecopy( $def_namedconf, $chrootdir . $def_namedconf ); Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $chrootdir . $def_namedconf ); } } # Reset ownership of named.conf print "Changing ownership of $def_namedconf: $binduser:$bindgroup\n" if $cpverbose; Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $def_namedconf ); if ( !-e '/var/cpanel/usensd' ) { print "Restarting Bind\n" if $cpverbose; system('/usr/local/cpanel/scripts/restartsrv_named'); } else { # This will also regenerate the zone database print "Restarting NSD\n" if $cpverbose; system('/usr/local/cpanel/scripts/restartsrv_nsd'); } ######[ call fixrndc to ensure working rndckey config ]############################################ if ( !-e '/var/cpanel/usensd' ) { print "Running `/usr/local/cpanel/scripts/fixrndc -f` to check rndc key\n" if $cpverbose; my $opts = $cpverbose ? '-fvs' : '-fs'; exec( '/usr/local/cpanel/scripts/fixrndc', $opts ); } exit(0); ################################################################################ # sub copytochroot ################################################################################ sub copytochroot { my $filenew = shift; # mtime of original file my $mtime = shift \|\| 0; if ( $chrootdir ne '' ) { my $chrootfile = $chrootdir . $filenew; print "Copying $filenew to $chrootfile\n" if $cpverbose; my ( $fsinode, $fsmode, $fsuid, $fsgid, $fsmtime ) = ( stat($filenew) )[ 1, 2, 4, 5, 9 ]; my $fsperms = $fsmode & 07777; if ( -e $chrootfile ) { my ( $chrootinode, $chrootmode, $chrootuid, $chrootgid, $chrootmtime ) = ( stat(_) )[ 1, 2, 4, 5, 9 ]; my $chrootperms = $chrootmode & 07777; if ($mtime) { my $now = time(); if ( $fsinode != $chrootinode && ( $mtime > $chrootmtime \|\| $mtime > $now \|\| $chrootmtime > $now \|\| $chrootuid != $binduid \|\| $chrootgid != $bindgid \|\| $chrootperms != $fsperms ) ) { #timewarp safe if ( Cpanel::FileUtils::Copy::safecopy( $filenew, $chrootfile ) ) { print "Copied $filenew to chroot environment.\n" if $cpverbose; Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $chrootfile ); Cpanel::SafetyBits::safe_chmod( $fsperms, $chrootfile ); return 1; } else { warn "Problem copying $filenew to $chrootdir"; return 0; } } else { print "$filenew already exists in chroot environment.\n" if $cpverbose; return 1; } } else { if ( $fsinode != $chrootinode ) { if ( Cpanel::FileUtils::Copy::safecopy( $filenew, $chrootfile ) ) { Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $chrootfile ); Cpanel::SafetyBits::safe_chmod( $fsperms, $chrootfile ); print "Copied $filenew to chroot environment.\n" if $cpverbose; return 1; } else { warn "Problem copying $filenew to $chrootdir"; return 0; } } else { if ( $chrootuid != $binduid \|\| $chrootgid != $bindgid \|\| $chrootperms != $fsperms ) { Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $chrootfile ); Cpanel::SafetyBits::safe_chmod( $fsperms, $chrootfile ); } print "$filenew already exists in chroot environment.\n" if $cpverbose; return 1; } } warn "Problem copying $filenew to chroot environment. This should not happen."; return 0; } elsif ( Cpanel::FileUtils::Copy::safecopy( $filenew, $chrootfile ) ) { print "Copied $filenew to chroot environment.\n" if $cpverbose; Cpanel::SafetyBits::safe_chown( $binduser, $bindgroup, $chrootfile ); return 1; } else { warn "Problem copying $filenew to chroot environment.\n"; return 0; } } return 0; } sub clearcache { if ( -e $def_namedconf . '.cache' ) { unlink( $def_namedconf . '.cache' ); unlink( $def_namedconf . '.zonedir.cache' ); } } ######[ Default named.conf template ]############################################################## sub getdefault_nameddotconf { my $bind_ipv6_line = ''; if ( -f '/etc/cpanel/ipv6/range_allocation_data' ) { $bind_ipv6_line = "\n\ // Enable IPv6\n listen-on-v6 { any; }; /* updated by cPanel /"; } return <<"EOC"; options { / make named use port 53 for the source of all queries, to allow * firewalls to block all ports except 53: / // query-source port 53; $bind_ipv6_line recursion no; / We no longer enable this by default as the dns posion exploit has forced many providers to open up their firewalls a bit / // Put files that named is allowed to write in the data/ directory: directory "###BASE_DIR###"; // the default pid-file "###PID_FILE###"; dump-file "data/cache_dump.db"; statistics-file "data/named_stats.txt"; / memstatistics-file "data/named_mem_stats.txt"; / allow-transfer { "none"; }; }; logging { channel default_log { file "/var/log/named/named.log" versions 5 size 128M; print-time yes; print-severity yes; print-category yes; severity warning; }; category default { default_log; }; category general { default_log; }; }; // All BIND 9 zones are in a "view", which allow different zones to be served // to different types of client addresses, and for options to be set for groups // of zones. // // By default, if named.conf contains no "view" clauses, all zones are in the // "default" view, which matches all clients. // // If named.conf contains any "view" clause, then all zones MUST be in a view; // so it is recommended to start off using views to avoid having to restructure // your configuration files in the future. view "localhost_resolver" { / This view sets up named to be a localhost resolver ( caching only nameserver ). * If all you want is a caching-only nameserver, then you need only define this view: / match-clients { 127.0.0.0/24; }; match-destinations { localhost; }; recursion yes; zone "." IN { type hint; file "###BASE_DIR###/named.ca"; }; / these are zones that contain definitions for all the localhost * names and addresses, as recommended in RFC1912 - these names should * ONLY be served to localhost clients: / include "###BASE_DIR###/named.rfc1912.zones"; }; view "internal" { / This view will contain zones you want to serve only to "internal" clients that connect via your directly attached LAN interfaces - "localnets" . / match-clients { localnets; }; match-destinations { localnets; }; recursion yes; zone "." IN { type hint; file "###BASE_DIR###/named.ca"; }; // include "###BASE_DIR###/named.rfc1912.zones"; // you should not serve your rfc1912 names to non-localhost clients. // These are your "authoritative" internal zones, and would probably // also be included in the "localhost_resolver" view above : }; view "external" { / This view will contain zones you want to serve only to "external" clients * that have addresses that are not on your directly attached LAN interface subnets: */ recursion no; additional-from-cache no; // you'd probably want to deny recursion to external clients, so you don't // end up providing free DNS service to all takers // all views must contain the root hints zone: zone "." IN { type hint; file "###BASE_DIR###/named.ca"; }; // These are your "authoritative" external zones, and would probably // contain entries for just your web and mail servers: // BEGIN external zone entries }; EOC } ###################################################################################################

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