New user mailbox permission

[Gionatan Danti]

>
> You could use sudo to grant your backup user the required rights to read
> those files.
>
> ==> /etc/sudoers
> backupuser ALL=NOPASSWD: /usr/bin/rsync
>

I, the point is that I don't want to give my script root privilege. Too 
much harm can be done using root privileges for simple task as backups.

This is why I included user "backup" into "vmail" group and changed all 
files/dir under mail_location to be read by "vmail" group. However, new 
user account are created with 0700 permissions, and that clearly break 
my backup.

I understand that the solution can be as simple as to do a chmod g+X 
before to run the backup, but I wander _how_ can be possibile to select 
the umask/permissions of new accounts under dovecot...

Thanks.

-- 
Danti Gionatan
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