I built my first cow on Centos 8 because I didn’t know better. It worked fine until a week ago when acme could not renew certs on ipv6 because of wrong network settings. Advice I got and sane thing to do is to rebuild on supported OS. So I installed on Debian 10. New cow works.
But then I wanted to restore data. I tried:
- restore all: users are recreated but mail doesn’t show in sogo or imap client
- restore vmail only same
- restore vmail and SQL same
- copy only messages from untarred vmail - messages also don’t show
In Sogo I see 33 empty messages with no headers or preview.
This is a test cow and I have pst of emails that I can manually import but it would be good to know how to get around if this happens in production.
On old cow I tried disabling ipv6 as a troubleshooting step with certs renewal. I tried reenabling ipv6 and making another backup but mysql backup fails. I have a backup from pre upgrade.