running alternate dovecot instances on the same server

[Jan Hugo Prins]

Hello Chris,

Did you find a solutions for this problem?
I also have to migrate some users to Office365 and was looking at 
exactly the same problem.
I don't have that many users, and it is totally possible to ask all 
users to enter their password in the migration tool, but it would be a 
lot easier if we could do the migration without this.

Jan Hugo Prins


On 3/20/22 21:36, Chris Hoogendyk wrote:
> I'm posting to the list, but not on the list. I presume that means a 
> reply-all to get to me as well as the list?
>
> We have two servers (dovecot --version:  2.2.22 (fe789d2)) that handle 
> email for two different departments.
>
> We are transitioning mail service to the University central IT. They 
> need to move accounts in an automated fashion and therefore need a 
> master password to our dovecot servers. However, we are running with 
> LDAP authentication, and I understand that a master password is not 
> possible in that configuration.
>
> Would it be possible to run an alternate dovecot process that would 
> use local account authentication, have a master password, and use an 
> alternate port for connecting? Ideally it would only read accounts 
> without changing anything, and would not interfere with the operation 
> of the other dovecot process. I'm hoping that I could copy the 
> configuration files, make these changes, and then launch it manually 
> without any startup scripts in /etc/inetd.conf.
>
> Oh, by the way, we are running Ubuntu 16.04 LTS and have contracts 
> with Ubuntu Advantage for ongoing patch support. The dovecot version 
> is from the distribution, installed with aptitude.
>
>