You have ran "./install.sh -s" on the destination server once to set it up, this is OK. But after you've done it, you have replaced all the binaries by CentOS6 binaries (rm /opt/zimbra and move files over). You should be running "./install.sh -s" again and not "./install.sh&...

I think you should not do it but it can be done: https://wiki.zimbra.com/wiki/Managing_D ... n_Catchall

On a side note, considering your example (using the "+" separator), you can enable it and not use catchall: https://wiki.zimbra.com/wiki/Plus_Addressing

You can get a cheap VPS on the internet that you can use as a relay (home -> VPS on another port than 25, VPS -> internet on port 25).
Or use some delivery systems (mailchimp or other) or use a mail account (gmail, O365, etc).

https://wiki.zimbra.com/wiki/Sending_ma ... rnal_relay

scp kills hardlinks, you should not use it to "backup" /opt/zimbra. You'd rather use other tools (rsync, tar, etc), with ZCS services stopped and do something special about the LDAP files (don't "backup" the sparse file, do a LDIF dump). IIRC there are several ways/solutions/sugg...

You shouldn't have to reboot the server so it sees the new volume. But you'll need a bit of linux CLI knowledge to get it handled and mounted, vmware KB article has some hints: https://kb.vmware.com/s/article/1003940 Once your VM knows about the new disk, you can use HSM with it (easier than expandi...

IMHO the best way is to use HSM. Look here: https://wiki.zimbra.com/wiki/Zimbra_NG_Modules/Zimbra_NG_HSM/Hierarchical_Storage_Management Create a new volume, it can be on a slower (cheaper) storage: usual setup is main volume (databases, indexes, new mails) on an SSD volume and the secondary one (ma...

Merci Sylvain.

So it would be Zimbra9 integration?

Ubuntu 18.04 is LTS.
That means Long Term Support.
That means supported for 5 years, till 2023.

https://ubuntu.com/blog/what-is-an-ubuntu-lts-release

Did the re-install fix the issue ?

OS upgrade should not change the hostname.
There's something else.

I cannot send outside my domain. Feb 13 16:31:38 mail postfix/smtp[93852]: connect to gmail-smtp-in.l.google.com[74.125.204.26]:25: Connection timed out Feb 13 16:31:38 mail postfix/smtp[93853]: connect to mta5.am0.yahoodns.net[67.195.228.106]:25: Connection timed out Feb 13 16:31:39 mail postfix/s...