postfix log status line regexp for fluentd(ruby)

fluentd.sample.conf

<source>
  type tail
  # format /(?<time>[\w]+\s+[\d]+\s[\d:]+)\s+(?<host>[\w]+)\s+(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s(?<queue_id>[\w]{11}):\s(?<data>.+)/
  format /(?<time>[\w]+\s+[\d]+\s[\d:]+)\s+(?<data>.+)/
  time_format %b %d %H:%M:%S
  path /var/log/mail.log
  pos_file /opt/fluentd/tmp/mail.log.pos2
  tag raw.postfix.result
</source>

<match raw.postfix.result>
  type copy
  <store>
    type parser
    remove_prefix raw
    format /(?<host>[\w]+)\s+(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s(?<queue_id>[\w]{11}):\sfrom=(?<from_address>[^,]+),\ssize=(?<size>[^,]+),\snrcpt=(?<nrcpt>[\w]+)\s\((?<message>(.*))\)/
    key_name data
  </store>

  <store>
    type parser
    remove_prefix raw
    format /(?<host>[\w]+)\s+(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s(?<queue_id>[\w]{11}):\sto=(?<to_address>[^,]+),\srelay=(?<relay>[^,]+),\sdelay=(?<delay>[^,]+),\sdelays=(?<delays>[^,]+),\sdsn=(?<dns>[^,]+),\sstatus=(?<status>[\w]+)\s\((?<message>(.*))\)/
    key_name data
  </store>
</match>

<match **.**>
  type stdout
</match>

regexp_postfix

format /(?<time>[\w]+\s+[\d]+\s[\d:]+)\s+(?<host>[\w]+)\s+(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s(?<queue_id>[\w]{11}):\s(?<data>.+)/

format /(?<time>[\w]+\s+[\d]+\s[\d:]+)\s+(?<host>[\w]+)\s+(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s(?<queue_id>[\w]{11}):\sfrom=(?<from_address>[^,]+),\ssize=(?<size>[^,]+),\snrcpt=(?<nrcpt>[\w]+)\s\((?<message>(.*))\)/
format /(?<time>[\w]+\s+[\d]+\s[\d:]+)\s+(?<host>[\w]+)\s+(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s(?<queue_id>[\w]{11}):\sto=(?<to_address>[^,]+),\srelay=(?<relay>[^,]+),\sdelay=(?<delay>[^,]+),\sdelays=(?<delays>[^,]+),\sdsn=(?<dns>[^,]+),\sstatus=(?<status>[\w]+)\s\((?<message>(.*))\)/

time_format %b %d %H:%M:%S

Some of my postfix servers queue_id length is 10 and some others has 12. Is there any way to make common regexp to support different queue_id length?

Thanks,
Varma

ubuntu 14.04 postfix:

to:

(?<host>[\w-]+)\s*(?<process>[\w\/]+)\[(?<pid>[\d]+)\]\:\s*(?<queue_id>[\w]{10}):\s*to=<(?<to_address>[^,]+)>,\s*relay=(?<relay>[^,]+),\s*delay=(?<delay>[^,]+),\s*delays=(?<delays>[^,]+),\s*dsn=(?<dns>[^,]+),\s*status=(?<status>[\w]+)\s*\((?<message>(.*))\)

10's chars for queue id and random hostname