It doesn't have to be in Docker, but it is the easiest way, because: 1 - Carbonio CE doesn't have it at all; 2 - You must install Z-Push and setup...

Ok... so... a thing you may take a look are quotas in Carbonio accounts. It happened to me once: the dump were bigger than the quote set on Carbonio...

Well... you gave no details of your migration process... so may I suggest this article I wrote? Zimbra to Carbonio – Z2C Telegram:/p>

Carbonio CE doesn't have ActiveSync available... so I did this Docker CT to implement Z-Push and attach it to Carbonio. Take a look to this article ...

As I explain on my article the problem with certificates generated on Admin UI is that they don't apply to Carbonio's core parts, meaning most e-mail ...

It is awesome indeed... but there are some considerations... I wrote two articles about it that you may find interesting: Let’s Encrypt on Carbonio ...

Give this one a try Let’s Encrypt on Carbonio – System Root with ACME.sh it might be exactly what you're looking for

Well.. you see... I ported an OpenSource implementation of zmbackup to Carbonio 😀 You may like to give it a try: From zmbackup to cmbackup Tele...

It might make it worse. Only do that if you can do a snapshot before and be able to roll back if needed. Ok... I'm glad he are now in the same page ...

I'm sorry if I insist: 1 - In your 1st message you said: For the purposes of this post the output of echo "$(hostname -I) $(hostname -f)" is 12...

The easiest way to fix that is change your /etc/hosts to look like this: 123.123.123.123 mailhost.mydomain.com mailhost In fact, this is the way it...

Consider taking a look o this tool I did Zimbra to Carbonio – Z2C I'm not saying imapsync can't be used, but it's far too limited because it doesn...

I honestly can't see anything wrong on your setups... I do it exactly as you described and it's working flawlessly.