grs blog

Category: linux

  • how to check size of zimbra mail accounts from terminal

    The most easy way to see the size of all zimbra mailboxes is to ssh into your zimbra server and type the following: 

    $ su - zimbra
$ all_accounts=zmprov -l gaa; for account in $all_accounts; do mbox_size=zmmailbox -z -m $account gms; echo "Mailbox size of $account = $mbox_size"; done ;

  • How to merge two zimbra mailboxes

    If you want to merge 2 zimbra mailboxes, you can simply export the source mailbox and import it to the target mailbox. This can be easilly achieved with a couple of zimbra commands.

    • SSH into your zimbra server.
    • Change to zimbra server:
      su - zimbra
    • Now type:
      /opt/zimbra/bin/zmmailbox -z -m [email protected] getRestURL "//?fmt=tgz" > /tmp/temp.tgz && /opt/zimbra/bin/zmmailbox -z -m [email protected] postRestURL "//?fmt=tgz&resolve=modify" /tmp/temp.tgz
      This is actually two commands in one line: first export to temp.tgz and, if export is successfull (&&), import to target mailbox.

    Make sure you replace [email protected] and [email protected] with proper addresses.

    If the old mailbox is big you may encounter the following error: 

    ERROR: zclient.IO_ERROR (Read timed out) (cause: java.net.SocketTimeoutException Read timed out)

    This is because the programmers of zmmailbox command have set a default timeout to avoid endless execution. Luckily for us, they have also supplied zmmailbox with the t option which let us specify the amount of time before the timeout error occurs. An infinite timeout is set with -t 0. So you may now want to rewrite the command like this:

    /opt/zimbra/bin/zmmailbox -z -t 0 -m [email protected] getRestURL "//?fmt=tgz" > /tmp/temp.tgz && /opt/zimbra/bin/zmmailbox -z -t 0 -m [email protected] postRestURL "//?fmt=tgz&resolve=modify" /tmp/temp.tgz

    Initially we have found the the idea in zimbra forums (https://forums.zimbra.org/viewtopic.php?t=62378) and we have also tried it many times in our own servers, especially with merging some multi giga byte accounts we manage and host.