Just use the section name as the state flag...

#!/usr/bin/perl

# http://perlmonks.org/?node_id=1180665

use strict;
use warnings;

my $section = '';
while(<DATA>)
  {
  if( /(.*)\(total: \d+\)/ ) # get section name
    {
    $section = $1;
    }
  elsif( $section =~ /Relay access denied/ and /^\s*\d+\s+(\S+)\s*$/ )
    {
    print "$section $1\n";
    # add $1 to DB one way
    }
  elsif( $section =~ /blocked using/ and /^\s*\d+\s+(\S+)\s*$/ )
    {
    print "$section $1\n";
    # add $1 to DB a different way
    }
  }

__DATA__
    Relay access denied (total: 13)
           1   46.183.217.174
           1   46.183.220.137
           1   46.183.220.138
           1   46.183.220.139
           1   46.183.223.239
           1   218.38.243.204
           1   185.29.8.198
           1   185.29.9.133
           1   185.29.9.135
           1   46.183.217.162
           1   46.183.217.165
           1   46.183.217.169
           1   91.236.75.169
    Sender address rejected: Access denied (total: 50)
           1   77.236.75.169
    blocked using dummy1 (total: 6)
           3   rzxwrvxk.com
           1   correio.biz
           1   facebook.com
           1   213.183.58.6
    blocked using dummy2 (total: 330)
           2   118.125.110.201
           1   61.2.46.20
    blocked using dummy3 (total: 5)
           2   hinet.net
           1   219.140.15.195
           1   219.139.16.134
           1   222.189.112.23
    blocked using dummy4 (total: 53)
           5   66.23.212.67
           5   66.23.212.70
           4   66.23.212.68
           4   66.23.212.69
    Relay access denied (total: 13)
           1   46.183.217.174
           1   46.183.220.137
           1   46.183.220.138
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