Dovecot -n and version present at the bottom of the email for legibility.
System is a Debian 10 + Virtualmin hosting setup for my domains
-------------------------------------------------------------------
Hello everyone, my first post. Sorry for the long and confusing post, I'm pretty new to dovecot other than basic functionality.
I recently in the last week went through the documentation for both shared (user to user) and public mailboxes and got them both working.
Took me a bit but eventually I figured it out, but I am still encountering some stubborn scenarios.
I am having some issues with 2 types of sharing. ( I believe problem A + B are related as the error is similarly permission based error)
For inconsistencies in the user account names,
user@domain.com vs user-domain.com please see issue C, which my workaround is functional.
A.)
Sharing user to user between in the same domain works fine.
Sharing user to user in different domains gives me some permission errors.
Permissions have been granted (to (using Linux ACL for more fine grained permissions) as far as I can tell.
B.)
Public mailbox, mailboxes that are physically present on the public mail dir, work fine.
Public boxes which are symlinks to mailboxes to other users, with correct permission and ACL, always give me permission errors and do not show up publicly.
These type of mailboxes do show up if the person already has user to user share setup with those boxes, which due to problem A, means only within the same domain.
Similar errors as to the A scenario, even if giving complete rwx access to all (user/group/other) I still get permission denied issues.
It just feel like dovecot isn't even trying to access the files
C. Tiny "other" problem I have worked around already.
dovecot-acl when using users via their
user@domain.com account doesn't lookup the user correctly.
I already have set,
auth_username_translation = @-
which works for when users login but it doesn't seem to work with dovecot-acl files.
I have helper account pointers replacing the @ with - and then the ACL file works fine.
Would prefer acl files contain,
But this works and is not a show stopper.
user=user1-primarydomain.com akxeilprwts
user=user2-primarydomain.com akxeilprwts
--------------------------------------------
dovecot --version
2.3.4.1 (f79e8e7e4)
# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.4 ()
# OS: Linux 5.4.44-2-pve x86_64 Debian 10.4
# Hostname: vps1.abclution.com
doveconf: Warning: please set ssl_dh=</etc/dovecot/dh.pem
doveconf: Warning: You can generate it with: dd if=/var/lib/dovecot/ssl-parameters.dat bs=1 skip=88 | openssl dhparam -inform der > /etc/dovecot/dh.pem
auth_mechanisms = plain login
auth_username_translation = @-
mail_debug = yes
mail_location = maildir:~/Maildir
mail_plugins = acl
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
separator = /
}
namespace public_ns1 {
location = maildir:/home/.Public_Mailboxes:INDEX=~/Maildir/public_ns1:INDEXPVT=~/Maildir/public_ns1
prefix = Public/
separator = /
subscriptions = no
type = public
}
namespace shared_ns1 {
list = yes
location = maildir:%%h/Maildir:INDEX=~/Maildir/shared_ns1/%%u:INDEXPVT=~/Maildir/shared_ns1/%%u
prefix = @/%%u/
separator = /
subscriptions = no
type = shared
}
passdb {
driver = pam
}
plugin {
acl = vfile
acl_anyone = allow
acl_defaults_from_inbox = yes
acl_shared_dict = file:%h/Maildir/shared-mailboxes
}
protocols = " imap pop3"
service auth {
unix_listener auth-userdb {
mode = 0777
}
}
ssl_cert = </etc/dovecot/dovecot.cert.pem
ssl_cipher_list = ECDHE-RSA-AES256-SHA384:AES256-SHA256:AES256-SHA256:RC4:HIGH:MEDIUM:+TLSv1:+TLSv1.1:+TLSv1.2:!MD5:!ADH:!aNULL:!eNULL:!NULL:!DH:!ADH:!EDH:!AESGCM
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
userdb {
driver = passwd
}
protocol imap {
mail_plugins = acl imap_acl
}