David Mehler
2017-Apr-14 00:04 UTC
several misc questions, public folders and sharing, quota, ssl
Hello,
I'm running dovecot 2.29 on a freebsd 10.3 system. I'm wanting to
optimize how the system is running and have a few misc questions.
First ssl, is my cipher list good? I'm trying for pfs and wanting to
ensure these cipherlist is appropriate:
ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH
Next, a new feature that I'm trying for is virtual folders that store
All messages. My understanding of this is that it stores a version of
every received message in one place? I've got the virtual plugin
loaded and have:
mailbox virtual/All {
comment = All my messages
special_use = \All
}
I've got a directory /home/vmail/example.com/username/virtual under
which is an ALL folder both directories are accessible to the vmail
user, yet there's no contents in this folder and it's showing up
nowhere.
Next, quota warnings, are not being sent at all. I set up a testuser
with a quota of 2 mb, then sent a message to that user getting the box
to 95% full, and no message. Took the user overquota with the next
message, still nothing, and a third message did trigger my custom
quota exceeded message and the message was bounced.
I'm wanting to implement public folders. My mailboxes are all
virtual, and they are stored under /home/vmail/example.com/username
and /home/vmail/example.org/username in the maildir format. I've got
one user uid and gid of 999 name of vmail who owns all the mailboxes.
I've separated out public folders storing them under
/home/vmail/public. I've created one mailbox called TestFolder and
new, cur, and tmp directories under it. This is what it looks like:
ls -la /home/vmail/public
total 24
drwx------ 4 vmail vmail 512 Apr 13 18:23 ./
drwx------ 8 vmail vmail 512 Mar 15 10:34 ../
drwxr-xr-x 5 vmail vmail 512 Apr 13 18:16 TestFolder/
drwxr-xr-x 5 vmail vmail 512 Apr 13 18:25 TestFolder1/
-rw------- 1 vmail vmail 8 Apr 13 18:15 dovecot-uidvalidity
-r--r--r-- 1 vmail vmail 0 Apr 13 18:15 dovecot-uidvalidity.58eff89a
-rw------- 1 vmail vmail 688 Apr 13 18:24 dovecot.list.index.log
ls -la /home/vmail/public/TestFolder
total 28
drwxr-xr-x 5 vmail vmail 512 Apr 13 18:16 ./
drwx------ 4 vmail vmail 512 Apr 13 18:23 ../
drwxr-xr-x 2 vmail vmail 512 Apr 13 18:13 cur/
-rw-r--r-- 1 vmail vmail 51 Apr 13 18:16 dovecot-uidlist
-rw-r--r-- 1 vmail vmail 304 Apr 13 18:16 dovecot.index.log
drwxr-xr-x 2 vmail vmail 512 Apr 13 18:13 new/
drwxr-xr-x 2 vmail vmail 512 Apr 13 18:13 tmp/
ls -la /home/vmail/public/TestFolder1
total 20
drwxr-xr-x 5 vmail vmail 512 Apr 13 18:25 ./
drwx------ 4 vmail vmail 512 Apr 13 18:23 ../
drwxr-xr-x 2 vmail vmail 512 Apr 13 18:25 cur/
drwxr-xr-x 2 vmail vmail 512 Apr 13 18:25 new/
drwxr-xr-x 2 vmail vmail 512 Apr 13 18:25 tmp/
The public/TestFolder is showing up fine and I can switch to it. The
public/TestFolder1 is not showing up at all so I'm not seeing it and
can't switch to it. Any ideas?
My second question involves public folders and domain sharing. Are
public folders accessible to all users and all domains? I've got two
domains example.com and example.org i'd like to create a folder that
some users in example.com can share with some users in example.org,
not necessarily all users in those domains should be able to see the
folders.
Ideas welcome.
Thanks.
Dave.
doveconf -n
# 2.2.29 (13ebc01): /usr/local/etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.18 (29cc74d)
# OS: FreeBSD 10.3-RELEASE-p11 amd64 ufs
auth_cache_size = 8 k
auth_default_realm = example.com
auth_mechanisms = plain login cram-md5
auth_realms = example.com example.org
auth_socket_path = /var/run/dovecot/auth-userdb
dict {
sqlquota = mysql:/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext
}
disable_plaintext_auth = no
first_valid_gid = 999
first_valid_uid = 999
hostname = mail.example.com
imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags
last_valid_gid = 999
last_valid_uid = 999
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
listen = 127.0.0.1 xxx.xxx.xxx.xxx
mail_fsync = never
mail_gid = vmail
mail_home = /home/vmail/%d/%n/home
mail_location = maildir:/home/vmail/%d/%n:LAYOUT=fs
mail_plugins = acl mail_log notify quota trash virtual welcome zlib
mail_server_admin = mailto:postmaster at example.com
mail_uid = vmail
mailbox_list_index = yes
maildir_broken_filename_sizes = yes
maildir_empty_new = yes
maildir_very_dirty_syncs = yes
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric
relational regex imap4flags copy include variables body enotify
environment mailbox date index ihave duplicate mime foreverypart
extracttext imapflags notify imapsieve vnd.dovecot.imapsieve
namespace {
hidden = no
list = yes
location =
maildir:/home/vmail/public/:LAYOUT=fs:CONTROL=/home/vmail/public/:INDEX=/home/vmail/public/
prefix = public/
separator = /
subscriptions = yes
type = public
}
namespace inbox {
hidden = no
inbox = yes
list = yes
location mailbox "Deleted Messages" {
auto = no
autoexpunge = 30 days
special_use = \Trash
}
mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Junk {
auto = subscribe
autoexpunge = 30 days
special_use = \Junk
}
mailbox "Junk E-mail" {
auto = no
autoexpunge = 30 days
special_use = \Junk
}
mailbox Sent {
auto = subscribe
special_use = \Sent
}
mailbox "Sent Items" {
auto = no
special_use = \Sent
}
mailbox "Sent Messages" {
auto = no
special_use = \Sent
}
mailbox Spam {
auto = no
autoexpunge = 30 days
special_use = \Junk
}
mailbox Trash {
auto = subscribe
autoexpunge = 30 days
special_use = \Trash
}
mailbox virtual/All {
comment = All my messages
special_use = \All
}
prefix separator = /
subscriptions = yes
type = private
}
passdb {
args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
imapsieve_mailbox1_before file:/usr/local/lib/dovecot/sieve/report-spam.sieve
imapsieve_mailbox1_causes = COPY
imapsieve_mailbox1_name = Spam
imapsieve_mailbox2_before = file:/usr/local/lib/dovecot/sieve/report-ham.sieve
imapsieve_mailbox2_causes = COPY
imapsieve_mailbox2_from = Spam
imapsieve_mailbox2_name = *
last_login_dict = redis:host=127.0.0.1:port=6379
last_login_key = last-login/%u
mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
mail_log_fields = uid box msgid size
quota = dict:User quota::proxy::sqlquota
quota2 = maildir:Shared quota:ns=public/
quota_exceeded_message = Storage quota for this account has been
exceeded, please try again later.
quota_grace = 10%%
quota_status_nouser = DUNNO
quota_status_overquota = 552 5.2.2 Mailbox is full
quota_status_success = DUNNO
quota_warning = storage=100%% quota-warning 100 %u
quota_warning2 = storage=95%% quota-warning 95 %u
quota_warning3 = storage=90%% quota-warning 90 %u
quota_warning4 = storage=85%% quota-warning 85 %u
quota_warning5 = storage=75%% quota-warning 75 %u
sieve =
/home/vmail/%d/%n/sieve/scripts;active=/home/vmail/%d/%n/sieve/.dovecot.sieve
sieve_before = /usr/local/etc/dovecot/sieve/dovecot.sieve
sieve_default = /usr/local/etc/dovecot/sieve/dovecot.sieve
sieve_dir = /usr/local/etc/dovecot/sieve
sieve_extensions = +notify +imapflags
sieve_global_dir = /usr/local/etc/dovecot/sieve/
sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.execute
sieve_max_redirects = 30
sieve_max_script_size = 1M
sieve_pipe_bin_dir = /usr/local/lib/dovecot/sieve
sieve_plugins = sieve_imapsieve sieve_extprograms
sieve_user_log = /home/vmail/%d/%n/sieve/sieve_error.log
trash = /usr/local/etc/dovecot/dovecot-trash.conf.ext
welcome_script = welcome %u
welcome_wait = yes
}
postmaster_address = postmaster at example.com
protocols = imap sieve
sendmail_path = /usr/local/sbin/sendmail
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
unix_listener auth-userdb {
group = vmail
mode = 0660
user = vmail
}
}
service dict {
unix_listener dict {
group = vmail
mode = 0660
user = vmail
}
}
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
service_count = 1
}
service imap {
client_limit = 1
}
service lmtp {
unix_listener dovecot-lmtp {
group = postfix
mode = 0660
user = postfix
}
}
service managesieve-login {
inet_listener sieve {
address = 127.0.0.1
port = 4190
}
process_min_avail = 0
service_count = 1
vsz_limit = 64 M
}
service quota-status {
client_limit = 1
executable = quota-status -p postfix
inet_listener {
address = 127.0.0.1
port = 12345
}
}
service quota-warning {
executable = script /usr/local/bin/quota-warning.sh
unix_listener quota-warning {
group = vmail
mode = 0666
user = vmail
}
user = vmail
}
service welcome {
executable = script /usr/local/bin/welcome.sh
unix_listener welcome {
user = vmail
}
user = vmail
}
ssl_cert = </usr/local/etc/letsencrypt/live/mail.example.com/fullchain.pem
ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH
ssl_dh_parameters_length = 2048
ssl_key = # hidden, use -P to show it
ssl_options = no_compression
ssl_prefer_server_ciphers = yes
ssl_protocols = !SSLv2 !SSLv3
userdb {
driver = prefetch
}
userdb {
args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
userdb {
args = uid=vmail gid=vmail home=/home/vmail/%d/%n
driver = static
}
protocol lmtp {
mail_plugins = acl mail_log notify quota trash virtual welcome zlib sieve
}
protocol lda {
mail_fsync = optimized
mail_plugins = acl mail_log notify quota trash virtual welcome zlib
quota sieve
}
protocol imap {
mail_max_userip_connections = 30
mail_plugins = acl mail_log notify quota trash virtual welcome zlib
imap_acl imap_quota imap_sieve imap_zlib last_login
}
protocol sieve {
managesieve_implementation_string = Dovecot Pigeonhole
managesieve_max_compile_errors = 5
managesieve_max_line_length = 65536
}
/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext
connect = host=/tmp/mysql.sock dbname=dbname user=user password=password
# CREATE TABLE quota (
# username varchar(100) not null,
# bytes bigint not null default 0,
# messages integer not null default 0,
# primary key (username)
# );
map {
pattern = priv/quota/storage
table = quota
username_field = username
value_field = bytes
}
map {
pattern = priv/quota/messages
table = quota
username_field = username
value_field = messages
}
# CREATE TABLE expires (
# username varchar(100) not null,
# mailbox varchar(255) not null,
# expire_stamp integer not null,
# primary key (username, mailbox)
# );
#map {
#pattern = shared/expire/$user/$mailbox
#table = expires
#value_field = expire_stamp
#fields {
#username = $user
#mailbox = $mailbox
#}
#}
Aki Tuomi
2017-Apr-14 07:06 UTC
several misc questions, public folders and sharing, quota, ssl
> On April 14, 2017 at 3:04 AM David Mehler <dave.mehler at gmail.com> wrote: > > > Hello, > > I'm running dovecot 2.29 on a freebsd 10.3 system. I'm wanting to > optimize how the system is running and have a few misc questions. > > First ssl, is my cipher list good? I'm trying for pfs and wanting to > ensure these cipherlist is appropriate: > > ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH >I would add @STRENGTH to the end, so it'll get sorted by strengthness.> Next, a new feature that I'm trying for is virtual folders that store > All messages. My understanding of this is that it stores a version of > every received message in one place? I've got the virtual plugin > loaded and have: > > mailbox virtual/All { > comment = All my messages > special_use = \All > } > > I've got a directory /home/vmail/example.com/username/virtual under > which is an ALL folder both directories are accessible to the vmail > user, yet there's no contents in this folder and it's showing up > nowhere. >Configuring virtual all folder: namespace { prefix = virtual location = virtual:/etc/dovecot/virtual:INDEX=%h/virtual comment = All my messages special_use = \All mailbox All { auto = subscribe } } ==== /etc/dovecot/virtual/All/dovecot-virtual ===* all ==== EOF ==> Next, quota warnings, are not being sent at all. I set up a testuser > with a quota of 2 mb, then sent a message to that user getting the box > to 95% full, and no message. Took the user overquota with the next > message, still nothing, and a third message did trigger my custom > quota exceeded message and the message was bounced. >I would recommend you using mail_plugins = $mail_plugins quota quota_clone plugin { quota = count:User quota quota_clone_dict = proxy::sqlquota quota_vsizes = true } Also, "Note that the warning is ONLY executed at the exact time when the limit is being crossed, so when you're testing it you have to do it by crossing the limit by saving a new mail. If something else besides Dovecot updates quota so that the limit is crossed, the warning is never executed."> I'm wanting to implement public folders. My mailboxes are all > virtual, and they are stored under /home/vmail/example.com/username > and /home/vmail/example.org/username in the maildir format. I've got > one user uid and gid of 999 name of vmail who owns all the mailboxes. > I've separated out public folders storing them under > /home/vmail/public. I've created one mailbox called TestFolder and > new, cur, and tmp directories under it. This is what it looks like:<snip />> The public/TestFolder is showing up fine and I can switch to it. The > public/TestFolder1 is not showing up at all so I'm not seeing it and > can't switch to it. Any ideas? >Not sure why it's not showing up, *but*, you could add :INDEXPVT=%h/public to the folder, to keep per-user indexes separate.> My second question involves public folders and domain sharing. Are > public folders accessible to all users and all domains? I've got two > domains example.com and example.org i'd like to create a folder that > some users in example.com can share with some users in example.org, > not necessarily all users in those domains should be able to see the > folders. >Dovecot does not, as per such, care about your domains. It cares about user names. If you want to do this kind of thing, please consult ACL plugin. https://wiki2.dovecot.org/ACL> Ideas welcome. > > Thanks. > Dave. >Some other comments, if you are using SSL, you can drop cram-md5 as auth mech, it's not storage-safe. you should use mail_location = maildir:~/maildir:LAYOUT=fs to avoid your other things in user's home being interprepted as mail directories. why are you setting these? maildir_broken_filename_sizes = yes maildir_empty_new = yes maildir_very_dirty_syncs = yes and in general I see lots of overconfiguring, dovecot defaults are usually right, and setting various things just for the fun of it, can cause problems. Aki
Aki Tuomi
2017-Apr-14 17:43 UTC
several misc questions, public folders and sharing, quota, ssl
Please keep responses on the list. Thank you. =)
Without ACL plugin there is no way to restrict access, it's free for all.
my site is a very tiny few user site, but ...
auth_mechanisms = login plain
mail_attribute_dict = file:%h/Mail/dovecot-attributes
mail_location = sdbox:~/Mail
mail_plugins = stats quota fts fts_lucene
namespace inbox {
inbox = yes
list = yes
location mailbox Drafts {
special_use = \Drafts
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Spam {
auto = subscribe
special_use = \Junk
}
mailbox Trash {
special_use = \Trash
}
prefix separator = .
subscriptions = yes
type = private
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
fts = lucene
fts_lucene = whitespace_chars=@.
imapsieve_mailbox1_before = file:/usr/lib/dovecot/sieve/report-spam.sieve
imapsieve_mailbox1_causes = COPY
imapsieve_mailbox1_name = Spam
imapsieve_mailbox2_before = file:/usr/lib/dovecot/sieve/report-ham.sieve
imapsieve_mailbox2_causes = COPY
imapsieve_mailbox2_from = Spam
imapsieve_mailbox2_name = *
quota = count:User quota
quota_vsizes = yes
recipient_delimiter = +
sieve = ~/.dovecot.sieve
sieve_dir = ~/sieve
sieve_extensions = +notify +imapflags
sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.execute
sieve_pipe_bin_dir = /usr/lib/dovecot/sieve
sieve_plugins = sieve_imapsieve sieve_extprograms
stats_refresh = 30
}
protocols = imap lmtp
service auth {
unix_listener /var/spool/postfix/private/auth {
mode = 0666
}
user = $default_internal_user
}
service doveadm {
inet_listener http {
address = 127.0.0.1
port = 38080
}
}
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service lmtp {
inet_listener lmtp {
address = 127.0.0.1
port = 8025
}
}
service stats {
fifo_listener stats-mail {
mode = 0666
}
}
ssl = required
ssl_cert = #
ssl_cipher_list =
ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES256-SHA256:AES256-SHA:AES128-SHA
ssl_dh_parameters_length = 4096
ssl_key = #
ssl_prefer_server_ciphers = yes
ssl_protocols = !SSLv2 !SSLv3
submission_host = 127.0.0.1:25
userdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
protocol imap {
mail_plugins = stats quota fts fts_lucene imap_stats imap_sieve
}
protocol lmtp {
mail_plugins = stats quota fts fts_lucene sieve
}
protocol lda {
mail_plugins = stats quota fts fts_lucene sieve
}
Aki
> On April 14, 2017 at 7:21 PM David Mehler <dave.mehler at gmail.com>
wrote:
>
>
> Hello Aki,
>
> Thank you for your reply.
>
> I've implemented your changes and thanks for the @STRENGTH reminder, I
> had forgotten about that one.
>
> I'll check out the acl plugin. Is it required when sharing a public
> folder or are public folders usable by all? I know it is for shared
> folders.
>
> The TestFolder1 is still not showing up in public not sure why
> everything looks good.
>
> My configuration was migrated from 2.0 to 2.1 then 2.2, various ports
> along the way.
>
> I was wondering if I could take a look at your dovecot configuration
> files and a doveconf -n output?
>
> Thanks.
> Dave.
>
>
> On 4/14/17, Aki Tuomi <aki.tuomi at dovecot.fi> wrote:
> >
> >> On April 14, 2017 at 3:04 AM David Mehler <dave.mehler at
gmail.com> wrote:
> >>
> >>
> >> Hello,
> >>
> >> I'm running dovecot 2.29 on a freebsd 10.3 system. I'm
wanting to
> >> optimize how the system is running and have a few misc questions.
> >>
> >> First ssl, is my cipher list good? I'm trying for pfs and
wanting to
> >> ensure these cipherlist is appropriate:
> >>
> >> ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH
> >>
> >
> > I would add @STRENGTH to the end, so it'll get sorted by
strengthness.
> >
> >> Next, a new feature that I'm trying for is virtual folders
that store
> >> All messages. My understanding of this is that it stores a version
of
> >> every received message in one place? I've got the virtual
plugin
> >> loaded and have:
> >>
> >> mailbox virtual/All {
> >> comment = All my messages
> >> special_use = \All
> >> }
> >>
> >> I've got a directory /home/vmail/example.com/username/virtual
under
> >> which is an ALL folder both directories are accessible to the
vmail
> >> user, yet there's no contents in this folder and it's
showing up
> >> nowhere.
> >>
> >
> > Configuring virtual all folder:
> >
> > namespace {
> > prefix = virtual
> > location = virtual:/etc/dovecot/virtual:INDEX=%h/virtual
> > comment = All my messages
> > special_use = \All
> > mailbox All {
> > auto = subscribe
> > }
> > }
> >
> > ==== /etc/dovecot/virtual/All/dovecot-virtual ===> > *
> > all
> > ==== EOF ==> >
> >> Next, quota warnings, are not being sent at all. I set up a
testuser
> >> with a quota of 2 mb, then sent a message to that user getting the
box
> >> to 95% full, and no message. Took the user overquota with the next
> >> message, still nothing, and a third message did trigger my custom
> >> quota exceeded message and the message was bounced.
> >>
> >
> > I would recommend you using
> >
> > mail_plugins = $mail_plugins quota quota_clone
> >
> > plugin {
> > quota = count:User quota
> > quota_clone_dict = proxy::sqlquota
> > quota_vsizes = true
> > }
> >
> > Also,
> >
> > "Note that the warning is ONLY executed at the exact time when
the limit is
> > being crossed, so when you're testing it you have to do it by
crossing the
> > limit by saving a new mail. If something else besides Dovecot updates
quota
> > so that the limit is crossed, the warning is never executed."
> >
> >> I'm wanting to implement public folders. My mailboxes are all
> >> virtual, and they are stored under
/home/vmail/example.com/username
> >> and /home/vmail/example.org/username in the maildir format.
I've got
> >> one user uid and gid of 999 name of vmail who owns all the
mailboxes.
> >> I've separated out public folders storing them under
> >> /home/vmail/public. I've created one mailbox called TestFolder
and
> >> new, cur, and tmp directories under it. This is what it looks
like:
> >
> > <snip />
> >
> >> The public/TestFolder is showing up fine and I can switch to it.
The
> >> public/TestFolder1 is not showing up at all so I'm not seeing
it and
> >> can't switch to it. Any ideas?
> >>
> >
> > Not sure why it's not showing up, *but*, you could add
:INDEXPVT=%h/public
> > to the folder, to keep per-user indexes separate.
> >
> >> My second question involves public folders and domain sharing. Are
> >> public folders accessible to all users and all domains? I've
got two
> >> domains example.com and example.org i'd like to create a
folder that
> >> some users in example.com can share with some users in
example.org,
> >> not necessarily all users in those domains should be able to see
the
> >> folders.
> >>
> >
> > Dovecot does not, as per such, care about your domains. It cares about
user
> > names. If you want to do this kind of thing, please consult ACL
plugin.
> > https://wiki2.dovecot.org/ACL
> >
> >> Ideas welcome.
> >>
> >> Thanks.
> >> Dave.
> >>
> >
> > Some other comments, if you are using SSL, you can drop cram-md5 as
auth
> > mech, it's not storage-safe.
> >
> > you should use mail_location = maildir:~/maildir:LAYOUT=fs
> >
> > to avoid your other things in user's home being interprepted as
mail
> > directories.
> >
> > why are you setting these?
> > maildir_broken_filename_sizes = yes
> > maildir_empty_new = yes
> > maildir_very_dirty_syncs = yes
> >
> > and in general I see lots of overconfiguring, dovecot defaults are
usually
> > right, and setting various things just for the fun of it, can cause
> > problems.
> >
> > Aki
> >
David Mehler
2017-Apr-14 20:53 UTC
several misc questions, public folders and sharing, quota, ssl
Hi Aki, Thanks for your reply. Sorry, hit the reply to and not the reply to all option. So, even when a folder is a public folder I'm still needing to use the acl plugin? The public/TestFolder is showing up, the public/TestFolder1 is not. Thanks. Dave. On 4/14/17, Aki Tuomi <aki.tuomi at dovecot.fi> wrote:> Please keep responses on the list. Thank you. =) > > Without ACL plugin there is no way to restrict access, it's free for all. > > my site is a very tiny few user site, but ... > > auth_mechanisms = login plain > mail_attribute_dict = file:%h/Mail/dovecot-attributes > mail_location = sdbox:~/Mail > mail_plugins = stats quota fts fts_lucene > namespace inbox { > inbox = yes > list = yes > location > mailbox Drafts { > special_use = \Drafts > } > mailbox Sent { > special_use = \Sent > } > mailbox "Sent Messages" { > special_use = \Sent > } > mailbox Spam { > auto = subscribe > special_use = \Junk > } > mailbox Trash { > special_use = \Trash > } > prefix > separator = . > subscriptions = yes > type = private > } > passdb { > args = /etc/dovecot/dovecot-sql.conf.ext > driver = sql > } > plugin { > fts = lucene > fts_lucene = whitespace_chars=@. > imapsieve_mailbox1_before = file:/usr/lib/dovecot/sieve/report-spam.sieve > imapsieve_mailbox1_causes = COPY > imapsieve_mailbox1_name = Spam > imapsieve_mailbox2_before = file:/usr/lib/dovecot/sieve/report-ham.sieve > imapsieve_mailbox2_causes = COPY > imapsieve_mailbox2_from = Spam > imapsieve_mailbox2_name = * > quota = count:User quota > quota_vsizes = yes > recipient_delimiter = + > sieve = ~/.dovecot.sieve > sieve_dir = ~/sieve > sieve_extensions = +notify +imapflags > sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.execute > sieve_pipe_bin_dir = /usr/lib/dovecot/sieve > sieve_plugins = sieve_imapsieve sieve_extprograms > stats_refresh = 30 > } > protocols = imap lmtp > service auth { > unix_listener /var/spool/postfix/private/auth { > mode = 0666 > } > user = $default_internal_user > } > service doveadm { > inet_listener http { > address = 127.0.0.1 > port = 38080 > } > } > service imap-login { > inet_listener imap { > port = 143 > } > inet_listener imaps { > port = 993 > ssl = yes > } > } > service lmtp { > inet_listener lmtp { > address = 127.0.0.1 > port = 8025 > } > } > service stats { > fifo_listener stats-mail { > mode = 0666 > } > } > ssl = required > ssl_cert = # > ssl_cipher_list > ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES256-SHA256:AES256-SHA:AES128-SHA > ssl_dh_parameters_length = 4096 > ssl_key = # > ssl_prefer_server_ciphers = yes > ssl_protocols = !SSLv2 !SSLv3 > submission_host = 127.0.0.1:25 > userdb { > args = /etc/dovecot/dovecot-sql.conf.ext > driver = sql > } > protocol imap { > mail_plugins = stats quota fts fts_lucene imap_stats imap_sieve > } > protocol lmtp { > mail_plugins = stats quota fts fts_lucene sieve > } > protocol lda { > mail_plugins = stats quota fts fts_lucene sieve > } > > Aki > >> On April 14, 2017 at 7:21 PM David Mehler <dave.mehler at gmail.com> wrote: >> >> >> Hello Aki, >> >> Thank you for your reply. >> >> I've implemented your changes and thanks for the @STRENGTH reminder, I >> had forgotten about that one. >> >> I'll check out the acl plugin. Is it required when sharing a public >> folder or are public folders usable by all? I know it is for shared >> folders. >> >> The TestFolder1 is still not showing up in public not sure why >> everything looks good. >> >> My configuration was migrated from 2.0 to 2.1 then 2.2, various ports >> along the way. >> >> I was wondering if I could take a look at your dovecot configuration >> files and a doveconf -n output? >> >> Thanks. >> Dave. >> >> >> On 4/14/17, Aki Tuomi <aki.tuomi at dovecot.fi> wrote: >> > >> >> On April 14, 2017 at 3:04 AM David Mehler <dave.mehler at gmail.com> >> >> wrote: >> >> >> >> >> >> Hello, >> >> >> >> I'm running dovecot 2.29 on a freebsd 10.3 system. I'm wanting to >> >> optimize how the system is running and have a few misc questions. >> >> >> >> First ssl, is my cipher list good? I'm trying for pfs and wanting to >> >> ensure these cipherlist is appropriate: >> >> >> >> ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH >> >> >> > >> > I would add @STRENGTH to the end, so it'll get sorted by strengthness. >> > >> >> Next, a new feature that I'm trying for is virtual folders that store >> >> All messages. My understanding of this is that it stores a version of >> >> every received message in one place? I've got the virtual plugin >> >> loaded and have: >> >> >> >> mailbox virtual/All { >> >> comment = All my messages >> >> special_use = \All >> >> } >> >> >> >> I've got a directory /home/vmail/example.com/username/virtual under >> >> which is an ALL folder both directories are accessible to the vmail >> >> user, yet there's no contents in this folder and it's showing up >> >> nowhere. >> >> >> > >> > Configuring virtual all folder: >> > >> > namespace { >> > prefix = virtual >> > location = virtual:/etc/dovecot/virtual:INDEX=%h/virtual >> > comment = All my messages >> > special_use = \All >> > mailbox All { >> > auto = subscribe >> > } >> > } >> > >> > ==== /etc/dovecot/virtual/All/dovecot-virtual ===>> > * >> > all >> > ==== EOF ==>> > >> >> Next, quota warnings, are not being sent at all. I set up a testuser >> >> with a quota of 2 mb, then sent a message to that user getting the box >> >> to 95% full, and no message. Took the user overquota with the next >> >> message, still nothing, and a third message did trigger my custom >> >> quota exceeded message and the message was bounced. >> >> >> > >> > I would recommend you using >> > >> > mail_plugins = $mail_plugins quota quota_clone >> > >> > plugin { >> > quota = count:User quota >> > quota_clone_dict = proxy::sqlquota >> > quota_vsizes = true >> > } >> > >> > Also, >> > >> > "Note that the warning is ONLY executed at the exact time when the limit >> > is >> > being crossed, so when you're testing it you have to do it by crossing >> > the >> > limit by saving a new mail. If something else besides Dovecot updates >> > quota >> > so that the limit is crossed, the warning is never executed." >> > >> >> I'm wanting to implement public folders. My mailboxes are all >> >> virtual, and they are stored under /home/vmail/example.com/username >> >> and /home/vmail/example.org/username in the maildir format. I've got >> >> one user uid and gid of 999 name of vmail who owns all the mailboxes. >> >> I've separated out public folders storing them under >> >> /home/vmail/public. I've created one mailbox called TestFolder and >> >> new, cur, and tmp directories under it. This is what it looks like: >> > >> > <snip /> >> > >> >> The public/TestFolder is showing up fine and I can switch to it. The >> >> public/TestFolder1 is not showing up at all so I'm not seeing it and >> >> can't switch to it. Any ideas? >> >> >> > >> > Not sure why it's not showing up, *but*, you could add >> > :INDEXPVT=%h/public >> > to the folder, to keep per-user indexes separate. >> > >> >> My second question involves public folders and domain sharing. Are >> >> public folders accessible to all users and all domains? I've got two >> >> domains example.com and example.org i'd like to create a folder that >> >> some users in example.com can share with some users in example.org, >> >> not necessarily all users in those domains should be able to see the >> >> folders. >> >> >> > >> > Dovecot does not, as per such, care about your domains. It cares about >> > user >> > names. If you want to do this kind of thing, please consult ACL plugin. >> > https://wiki2.dovecot.org/ACL >> > >> >> Ideas welcome. >> >> >> >> Thanks. >> >> Dave. >> >> >> > >> > Some other comments, if you are using SSL, you can drop cram-md5 as >> > auth >> > mech, it's not storage-safe. >> > >> > you should use mail_location = maildir:~/maildir:LAYOUT=fs >> > >> > to avoid your other things in user's home being interprepted as mail >> > directories. >> > >> > why are you setting these? >> > maildir_broken_filename_sizes = yes >> > maildir_empty_new = yes >> > maildir_very_dirty_syncs = yes >> > >> > and in general I see lots of overconfiguring, dovecot defaults are >> > usually >> > right, and setting various things just for the fun of it, can cause >> > problems. >> > >> > Aki >> > >
Olaf Hopp
2017-Apr-15 19:28 UTC
several misc questions, public folders and sharing, quota, ssl
On 04/14/2017 02:04 AM, David Mehler wrote:> > First ssl, is my cipher list good? I'm trying for pfs and wanting to > ensure these cipherlist is appropriate: > > ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDHYou can check the quality of your SSL/TLS setup via https://www.htbridge.com/ssl/ Regards, Olaf -- Karlsruher Institut f?r Technologie (KIT) ATIS - Abt. Technische Infrastruktur, Fakult?t f?r Informatik Dipl.-Geophys. Olaf Hopp - Leitung IT-Dienste - Am Fasanengarten 5, Geb?ude 50.34, Raum 009 76131 Karlsruhe Telefon: +49 721 608-43973 Fax: +49 721 608-46699 E-Mail: Olaf.Hopp at kit.edu www.atis.informatik.kit.edu www.kit.edu KIT - Die Forschungsuniversit?t in der Helmholtz-Gemeinschaft Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 5304 bytes Desc: S/MIME Cryptographic Signature URL: <http://dovecot.org/pipermail/dovecot/attachments/20170415/7c08036f/attachment.p7s>
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