Different users having same home/mail_location?

[Sami Ketola]

> On 23 Sep 2017, at 23.08, Tapio Sokura <oh2kku at iki.fi> wrote:
> 
> Hello,
> 
> Will I be breaking something if I have two users share the same home and/or mail_location (maildir format) in dovecot? Mail will only be delivered to the primary user, the other would be used every now and then to login via imap (webmail).
> 
> This would be on a CentOS 7 box running dovecot from the packaging system, i.e. dovecot-2.2.10-8.el7 currently. The reason I'd like to do this is to have two ways to login to the same mailbox, one using username + password and the other otherusername + otherpassword + otp-token. Basically this "otherusername" would be for cases where I don't trust the client computer to not have a keylogger etc badness in it, but still need to see my mail.
> 
> I have this kind of a dual-login setup via PAM for regular system user authentication and it's working ok. I'm just wondering about the dovecot part, whether dovecot will do Unexpected Things if more than one user have the same home and mail_location? If it makes any difference, the users can have separate homes, but the mailbox should be the same for usability.


It would break things.

Easier is just to owerwrite userid from user2 to user1 after authentication with another passdb.

Sami