So, I think main reason in my trouble is corrupt or missed mysql root password. I found 2 ways. May be it helps someone, who will search later. 1) m...

@sharif its me again 🙁 with key "-p" I got same error. (I try it via ssh and tty) Then I try to use root@mail:~# /opt/zextras/common/bin/mysql ...

@sharif thanks for help! can I ask one more stupid question. I need to do "zmcontrol stop" before start mysql_upgrade or no?

@sharif mysqlcheck: Got error: 1045: Access denied for user 'root'@'localhost' (using password: NO) when trying to connect

@sharif No, its some times upgraded installation since december 2023. OS: Ubuntu 20 LTS, Carbonio CE: 24.3.0 root@mail:/opt/zextras/conf# /opt/...

yes, it works. dkim key test in mail is pass.

to solve you need enable dkim service manualy. zmprov ms `zmhostname` +zimbraServiceEnabled opendkim