Different users having same home/mail_location?

[Tapio Sokura]

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.

   Tapio