Postfix plugins for Scout (untested)

postfix_queue_plugin.rb

class PostfixQeueuePlugin < Scout::Plugin
 def build_report
    queue_status = `/usr/sbin/postqueue -p`
    lines=queue_status.split("\n")
    
    reasons=Hash.new(0)
    lines.each do |line|
      if line =~ /\s(.*)/
        if line.match(/:25: (.*)\)/)
          reason=$1.downcase.gsub(" ","_")
          reasons[reason]+=1
        end
      end
    end
 
    summary=lines.last   
    if queue_status =~ /queue is empty/  
      outgoing = 0
    else
      outgoing = summary.match(/in (\d*) request[s]?/i)[1].to_i
    end
    hash={:queued_total => outgoing}
    hash.merge!(reasons)
    report(hash)
  end
end

postfix_status_plugin.rb

class PostfixStatusPlugin < Scout::Plugin
  def build_report
    postfix = `sudo /etc/init.d/postfix status`
    if postfix !~ /postfix is running/
      report(:status => 'ERR')
      alert('Postfix not running!')
    else
      report(:status => 'OK')
    end
  end
end