[How To]: Reset bulk passwords for users in Zimbra
How to Reset password for all (any) users in Zimbra.
Login to Zimbra SSH.
updatedb && locate zmprov
In most cases it the location for the bin file of zmprov will be at /opt/zimbra/bin/zmprov
Now Fetch Users from the Zimbra Backend.
/opt/zimbra/bin/zmprov -l gaa [domain name] > /tmp/allzimbrauserforpasschange.txt
If you don't mention domain name then it will fetch all zimbra users of the server.
/tmp/allzimbrauserforpasschange.txt and remove any user whose password reset is not needed, also remove default zimbra users like galsync, abuse, spam etc.
Once you're ready with the list of users run below for loop in screen.
for i in `cat /tmp/allzimbrauserforpasschange.txt` ; do newpass="S@wE#224`openssl rand -base64 12`0a" && /opt/zimbra/bin/zmprov sp $i $newpass && echo $i $newpass >> newlogin.txt && echo $i && sleep 5s ; done
You'll got the master file with all logins in PWD named newlogin.txt and copy data to secure location and remove that.
PS. If load spike, edit the for loop's sleep section to 90s, it will slow down the speed of loop and will not break.
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