is it possible to install ZIMBRA without its "own" MTA? Since I always got a 5.0.0 bounced error while trying to send mails, I had the idea to install postfix as a standalone version BEFORE the installation of ZIMBRA itself. During the ZIMBRA installation, I would uncheck the MTA option. ...

What manner or sorcery is going on such that my 40GB /opt/zimbra folder ends up filling and running out of space on a 400GB partition using rsync? That could be caused by the fact the the LDAP db is created as a sparse file, when it's not copied correctly it is created on the destination server at ...

biff wrote:Hello, give all output, but dkim empty

That would be the problem, as I mentioned earlier , you need to have the DKIM information set-up correctly in an external DNS server. Who hosts the external DNS records for your domain name?

What does the output of the following commands show (obviously put your settings & domain name in there)? dig +short TXT yourdomain.com @9.9.9.9 dig +short TXT _dmarc.yourdomain.com @9.9.9.9 dig +short TXT dkim._domainkey.yourdomain.com @9.9.9.9

No, it's not the Split DNS configuration as I sue that myself and have no problems with DKIM, DMARC & spf - although I now use rspamd for my anti-spam I also use it for DKIM signing I used to have it done by ZCS and didn't have any problems then. I mentioned an external DNS server, do you have t...

It's never a good idea to do an in-place upgrade of the O/S on any server and I'd suggest you run up a new server with the intended version plus the latest ZCS and do the move with the ZeXtras migration tool.

As you've given no details that can be verified other than it doesn't work it's impossible top tell what is the exact problem I'll hazard a guess that you don't have a valid DKIM record on a public DNS server.

More details on the Open Source project will be released separately within the next couple of weeks. Didn't you also make the above statement? It's now over seven weeks since you posted that, is there any update for your 'loyal' open source users or is this just more lack of interest from Synacor i...

artis1sysop wrote:One of our users says a folder with messages from 2015 just "disappeared".

Are folders and messages auto-archived?

artis1sysop wrote:How can we get this folder and messages restored?
We're using zimbra.xmission.com mail service

You need to contact your mail service provider about that.

Have you tried using a play store app such as K9 to see if you can get that working? Do you have a firewall and are the correct ports open? I'm afraid I don't know much about the android client except that most people seem to have problems with it.