Have you checked this wiki article? https://wiki.zimbra.com/wiki/Zm-lookup-user-not-found

Perhaps fail2ban user does not have access to the appropriate folders or the correct path setup to allow it to load the libraries? All emails I receive from fail2ban originate from fail2ban@server.domain

Once you have found the relevant Soap command, FolderActionRequest in this case, grep the files in /opt/zimbra/docs to locate the documentation for it [root@mail mail]# cd /opt/zimbra/docs/ [root@mail docs]# grep -ir FolderAction soap.txt:<FolderActionRequest> soap.txt:</FolderActionRequest> soap.tx...

Best way to work out what is happening is to use the browser Debug Tools (press F12) If you open the "Network" tab you can see the requests/responses from the browser to/from the server. Open a folder's properties, make a change to the retention settings, and save. You will see a "Bat...

It was discussed in this thread just recently. A Request for Enhancement has been filed.

viewtopic.php?f=15&t=68617

Try <SendMsgRequest xmlns="urn:zimbraMail"> - I think it is likely just a wrong context issue.

Does the user's Class Of Service have Dumpster enabled? If so, it is likely the email is still in their Dumpster and could be recovered so you can see all headers.

You have not provided much to go on.

Which version of zimbra?
Which version of z-push?
What z-push backend?

If anyone is interested, I have now combined Maxxer's script with a DNS hook to auto-renew certificates without patching the nginx files, and thus without opening the web server to unwanted probes. I started to look into this when letsencrypt started to do multi-source validation for http challenges...

The problem is that Outlook 2016 and 2019 moved over to connecting to OWA rather than ActiveSync by default. To connect to ActiveSync you need to have Outlook installed locally on your machine - the cloud version will not work. Then you need to type "Control Panel" in the Windows 10 Search...