Mailboxes By Distribution List

One of our domains has about 100 distribution lists for each of their departments/offices, and requested a way to get a breakdown of all of their users, and which distribution lists they were in.

I saved this file in /opt/zimbra/backup/scripts/ as userbreakdown.sh, owned by zimbra.zimbra chmod 755 userbreakdown.sh

#!/bin/bash
output="/tmp/distlistbreakdownfile"
domain="yourdomainnamehere.com"
SendTo="zimbra_reports@$domain"

rm -f $output
touch $output

for i in `zmprov -l gaa | grep $domain|sort`
do
echo "$i" >> $output
zmprov gam $i|while read line; do echo "     $line" >> $output; done
done
cat $output | mail @SendTo -s"User/Distribution list Breakdown for $domain"

Then I just setup a cronjob (crontab -e as zimbra user) to run this at 4:01 every monday morning, and email it to them.
1 4 * * 1 /opt/zimbra/backup/scripts/userbreakdown.sh

You could easily modify this to run through each domain on your server, and send a report to each domain, if you wanted (just add another for loop)
The output looks something like this (alphabetically for all users)

user1@yourdomainnamehere.com 
   admin@yourdomainnamehere.com
   allemployees@yourdomainnamehere.com
   all_southern@yourdomainnamehere.com (via southern@yourdomainnamehere.com)
   southern@yourdomainnamehere.com (via northern@yourdomainnamehere.com)
   all_employees@yourdomainnamehere.com (via admin@yourdomainnamehere.com)
   northern@yourdomainnamehere.com
user2@yourdomainnamehere.com 
   allemployees@yourdomainnamehere.com
   all_southern@yourdomainnamehere.com (via southern@yourdomainnamehere.com)
   southern@yourdomainnamehere.com (via northern@yourdomainnamehere.com)
   northern@yourdomainnamehere.com
etc

They then can at a quick glance, see if there are any users in NO distribution lists, for example, without having to go through each user one by one, or each distribution list! :)