Hello. If it is useful, with imapsync, I use the --authuser option. In the middle of migration of thousands of users, I preffer use the admin passwor...

@shariful-islam Thanks, I will try. It is absolutly necessary the steps 10 and 11 about carbonio mesh? Regards,

@shariful-islam Thanks for the tip. In my case, when I ran the command: zmprov ms mail.example.com zimbraSmtpPort 25 The error message dissapear...