March 2019 - dovecot - dovecot.org

ssl_dh
by sergio 16 Mar '19

16 Mar '19

https://wiki.dovecot.org/SSL/DovecotConfiguration says: "Since v2.3.3+ Diffie-Hellman parameters have been made optional, and you are encouraged to disable non-ECC DH algorithms completely." and a bit later: "From version 2.3, you must specify path to DH parameters file using ssl_dh=</path/to/dh.pem" So. 1. Is ssl_dh an optional or a must? 2. I've disabled ssl_dh in my config. Dovecot works fine except it shows warnings: doveconf: Warning: please set ssl_dh=</etc/dovecot/dh.pem doveconf: Warning: You can generate it with: dd ... I'm using dovecot version 2.3.4.1-1~bpo9+1 from debian stretch-backports -- sergio.

3 5

regarding ssl certificates
by mick crane 15 Mar '19

15 Mar '19

Excuse dopey question. I'm not exactly clear about certificates. Apache2 default install has this snake oil certificate Can make a new one for apache Can make one for dovecot Can make one for ssl Is there supposed to be the one (self signed ) certificate pair in one place for the machine that each process hands out ? Can they be moved to another machine ? mick -- Key ID C7D6E24C

12 16

lua policy for Weakforce and web mail failed login attempts
by Robert Kudyba 15 Mar '19

15 Mar '19

The good news is I believe I got Weakforce running 1) curl -X GET http://127.0.0.1:8084/?command=ping -u wforce:ourpassword {"status":"ok"}[ 2) after running the sample for loop: for a in {1..101}; do curl -X POST -H "Content-Type: application/json" --data '{"login":"ahu", "remote": "127.0.0.1", "pwhash":"1234'$a'", "success":"false"}' http://127.0.0.1:8084/?command=report -u wforce:ourpassword; done The result is: {"status":"ok"}{"status":"ok"}{"status":"ok"}{ 3) So checking the stats: curl -X POST -H "Content-Type: application/json" --data '{"ip":"127.0.0.1"}' http://127.0.0.1:8084/?command=getDBStats -u wforce:ourpassword {"bl_expire": "", "bl_reason": "", "blacklisted": false, "ip": "127.0.0.1", "stats": {"OneHourDB": {"diffFailedPasswords": 93}}} Notice the 93. 4) the reset works but I believe there's a bug in Getdbstats v2.0.0 where "blacklisted" is always shown: curl -X POST -H "Content-Type: application/json" --data '{"ip":"127.0.0.1"}' http://127.0.0.1:8084/?command=getDBStats -u wforce:ourpassword {"bl_expire": "", "bl_reason": "", "blacklisted": false, "ip": "127.0.0.1", "stats": {"OneHourDB": {"diffFailedPasswords": 0}}}[ 5) wforce -c Read configuration from '/usr/local/etc/wforce.conf' Connecting to 127.0.0.1:4004 > stats() 101 reports, 0 allow-queries (0 denies) The 3 big questions I have: a: how do I know IP's are being banned/rejected? Is there an alert creation or a way to see in the logs that the rules are in affect? b: since I installed via Git and ran "make" how to I get wforce --daemon to start on reboot? Is there a systemd file available? c: How do I create a lua policy that would catch these web dovecot login attempts? Feb 27 08:19:53 ourserver auth[15085]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:19:53 ourserver auth[15085]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= user(a)ourserver.ourdomain.edu rhost=177.72.0.158 Feb 27 08:20:35 ourserver auth[15085]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:20:35 ourserver auth[15085]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=user rhost=213.156.111.236 Feb 27 08:27:07 ourserver auth[16831]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:27:07 ourserver auth[16831]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= nobody(a)ourserver.ourdomain.edu rhost=79.106.35.59 Feb 27 08:27:27 ourserver auth[16831]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=nobody rhost=95.38.212.65 user=nobody Feb 27 08:27:27 ourserver auth[16831]: pam_succeed_if(dovecot:auth): requirement "uid >= 1000" not met by user "nobody" Feb 27 08:31:12 ourserver auth[17875]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:31:12 ourserver auth[17875]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= ouruser(a)ourserver.ourdomain.edu rhost=80.78.70.1 Feb 27 08:31:33 ourserver auth[17875]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=ouruser rhost=45.225.236.198 user=ouruser Feb 27 09:32:22 ourserver auth[32689]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:32:22 ourserver auth[32689]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= nobody(a)ourserver.ourdomain.edu rhost=37.205.81.41 Feb 27 09:32:42 ourserver auth[32689]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=nobody rhost=201.148.100.198 user=nobody Feb 27 09:32:42 ourserver auth[32689]: pam_succeed_if(dovecot:auth): requirement "uid >= 1000" not met by user "nobody" Feb 27 09:44:09 ourserver auth[3271]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:44:09 ourserver auth[3271]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= otheruser(a)ourserver.ourdomain.edu rhost=177.69.145.193 Feb 27 09:44:35 ourserver auth[3271]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:44:35 ourserver auth[3271]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=otheruser rhost=175.143.51.221 Feb 27 09:47:32 ourserver auth[4048]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:47:32 ourserver auth[4048]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= yetanotheruser(a)ourserver.ourdomain.edu rhost=162.245.81.231 Feb 27 09:47:56 ourserver auth[4048]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=yetanotheruser rhost=83.243.88.236 user=yetanotheruser Feb 27 20:44:41 ourserver auth[5828]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=ouruser rhost=166.171.184.200 user=ouruser

1 0

Re: ACL Folders are open but not being displayed ? [2.3.3]
by Aki Tuomi 15 Mar '19

15 Mar '19

It's a file, `touch subscriptions` Aki On 15.3.2019 11.36, Kunal A. wrote: > Oh okay. How do correct this? Create the file/folder for this? ie > mkdir suscriptions ? > > > On Fri, Mar 15, 2019 at 5:29 AM Aki Tuomi <aki.tuomi(a)open-xchange.com > <mailto:aki.tuomi@open-xchange.com>> wrote: > > Nevertheless, the subscriptions file needs to be there. > > Aki > > On 15.3.201911.28, Kunal A. wrote: >> Dear Aki, >> Got it corrected. Many thanks for pointing it out. There is >> another error about suscriptions. I don't have any folder with >> subscriptions. See the error below :- >> >> Mar 15 05:22:10 machine dovecot[4804]: imap(email1(a)example.com >> <mailto:email1@example.com>)<4970><XjWwkh6EBsAAAAAAAAAAAAAAAAAAAAAB>: >> Error: stat(/mnt/computer/Email/fastmail/subscriptions) failed: >> Permission denied >> >> dr-xr-xr-x root root / >> drwxr-xr-x root root mnt >> drwxr-xr-x vmail vmail computer >> drwxrwxr-x vmail vmail Email >> drwxrwxr-x vmail vmail fastmail >> subscriptions - No such file or directory >> >> Best Regards >> >> >> On Fri, Mar 15, 2019 at 3:02 AM Aki Tuomi >> <aki.tuomi(a)open-xchange.com <mailto:aki.tuomi@open-xchange.com>> >> wrote: >> >> >> On 15.3.2019 8.40, Kunal A. via dovecot wrote: >>> Hey, >>> Could someone help figure out whats wrong with my config >>> based on the debug below? >>> >>> What I am trying to achieve is to get email1(a)example.com >>> <mailto:email1@example.com> to read emails in the Public >>> directory that is stored on >>> /run/media/computer/Storage/Email/fastmail/Archive with the >>> preface Public/Archive . >>> >>> The ACL has been set for anyone with permissions to >>> lookup,read,write as shown below:- >>> >>> doveadm acl get -u email1(a)example.com >>> <mailto:email1@example.com> Public/Archive >>> ID Global >>> Rights >>> anyone lookup read write >>> >>> But when I try to access the emails for email1(a)example.com >>> <mailto:email1@example.com> , there are no folders. >>> Could someone here help review my debug log and advise what >>> could be causing this (dovecot -n output is provided below >>> the debug message) >>> >>> Many thanks for assistance. >>> Thanks >>> >> >>> Mar 15 01:29:28 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: >>> open(/run/media/computer/Storage/Email/fastmail/dovecot-acl-list) >>> failed: Permission denied >> >>> Mar 15 01:29:28 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: stat(/run/media/computer/Storage/Email/fastmail) >>> failed: Permission denied (euid=5000(vmail) egid=5000(vmail) >>> missing +w perm: /run/media/computer/Storage/Email/fastmail >>> stat(/run/media/computer/Storage/Email/fastmail) failed: >>> Permission denied, dir owned by 0:0 mode=0775) >> >>> Mar 15 01:29:28 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: >>> stat(/run/media/computer/Storage/Email/fastmail/.temp.e480machine.5167.a6506e27bd37a68a) >>> failed: Permission denied >> >>> Mar 15 01:30:14 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: mkdir(/run/media/computer/Storage/Email/fastmail) >>> failed: Permission denied (euid=5000(vmail) egid=5000(vmail) >>> missing +w perm: /run/media/computer, we're not in group >>> 0(root), dir owned by 0:0 mode=0775) >>> >> >> Maybe try fix these? >> >> >> Aki >>

2 1

Double quota calulation when special folder is present
by Bernd Wurst 15 Mar '19

15 Mar '19

Hello, we're operating dovecot on a small server. Some years ago, we migrated from courier IMAP to dovecot. Therefore, we defined our default Namespace "inbox" with prefix "INBOX." to have this compatible. I found this in some migration docs those days. Generally, everything worked as expected. Our only namespace is configured like this: namespace inbox { separator = . prefix = INBOX. inbox = yes } Regularly, there is no folder named INBOX or .INBOX in the file system, I suppose this is correct. But I found a special corner case today when it comes to quota calculation. When - for whatever reason - a folder .INBOX.foo (for arbitrary values of foo) exists, the whole mailbox is counted twice in quota recalculation. Just creating .INBOX does nothing but a subfolder triggers the problem. This is my shell view (replaced username and file path and deleted unnecessary debug output) $ cat maildirsize 268435456S 14697 17 $ maildirmake .INBOX.foo $ sudo doveadm -D quota recalc -u <user> [...] doveadm(<user>): Debug: Namespace inbox: type=private, prefix=INBOX., sep=., inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/home/.../test doveadm(<user>): Debug: maildir++: root=/home/.../test, index=, indexpvt=, control=, inbox=/home/.../test, alt= doveadm(<user>): Debug: Namespace : type=private, prefix=, sep=, inbox=no, hidden=yes, list=no, subscriptions=no location=fail::LAYOUT=none doveadm(<user>): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt= doveadm(<user>): Debug: quota: quota_over_flag check: quota_over_script unset - skipping doveadm(<user>): Debug: Quota root User quota: Recalculated relative rules with bytes=268435456 count=0. Now grace=26843545 doveadm(<user>): Debug: Namespace INBOX.: Using permissions from /home/.../test: mode=0700 gid=default $ cat maildirsize 268435456S 29394 34 So the used quota has exactly been doubled by just creating an empty subfolder. Do you have any pointers for fixing my configuration or is this a bug in dovecot? regards, Bernd

2 1

Upgrading to 2.3
by ＠lbutlr 15 Mar '19

15 Mar '19

I haven't upgraded to dovecot 2.3 yet, but am looking into doing it. I thought there was a link to some of the issues and changes you needed to make to your configuration to go from 2.2 to 2.3, but now I cannot find it. -- Science is the foot that kicks magic square in the nuts.

4 4

Re: ACL Folders are open but not being displayed ? [2.3.3]
by Aki Tuomi 15 Mar '19

15 Mar '19

Nevertheless, the subscriptions file needs to be there. Aki On 15.3.201911.28, Kunal A. wrote: > Dear Aki, > Got it corrected. Many thanks for pointing it out. There is another > error about suscriptions. I don't have any folder with subscriptions. > See the error below :- > > Mar 15 05:22:10 machine dovecot[4804]: imap(email1(a)example.com > <mailto:email1@example.com>)<4970><XjWwkh6EBsAAAAAAAAAAAAAAAAAAAAAB>: > Error: stat(/mnt/computer/Email/fastmail/subscriptions) failed: > Permission denied > > dr-xr-xr-x root root / > drwxr-xr-x root root mnt > drwxr-xr-x vmail vmail computer > drwxrwxr-x vmail vmail Email > drwxrwxr-x vmail vmail fastmail > subscriptions - No such file or directory > > Best Regards > > > On Fri, Mar 15, 2019 at 3:02 AM Aki Tuomi <aki.tuomi(a)open-xchange.com > <mailto:aki.tuomi@open-xchange.com>> wrote: > > > On 15.3.2019 8.40, Kunal A. via dovecot wrote: >> Hey, >> Could someone help figure out whats wrong with my config based on >> the debug below? >> >> What I am trying to achieve is to get email1(a)example.com >> <mailto:email1@example.com> to read emails in the Public >> directory that is stored on >> /run/media/computer/Storage/Email/fastmail/Archive with the >> preface Public/Archive . >> >> The ACL has been set for anyone with permissions to >> lookup,read,write as shown below:- >> >> doveadm acl get -u email1(a)example.com <mailto:email1@example.com> >> Public/Archive >> ID Global Rights >> anyone lookup read write >> >> But when I try to access the emails for email1(a)example.com >> <mailto:email1@example.com> , there are no folders. >> Could someone here help review my debug log and advise what could >> be causing this (dovecot -n output is provided below the debug >> message) >> >> Many thanks for assistance. >> Thanks >> > >> Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: >> open(/run/media/computer/Storage/Email/fastmail/dovecot-acl-list) >> failed: Permission denied > >> Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: stat(/run/media/computer/Storage/Email/fastmail) failed: >> Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w >> perm: /run/media/computer/Storage/Email/fastmail >> stat(/run/media/computer/Storage/Email/fastmail) failed: >> Permission denied, dir owned by 0:0 mode=0775) > >> Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: >> stat(/run/media/computer/Storage/Email/fastmail/.temp.e480machine.5167.a6506e27bd37a68a) >> failed: Permission denied > >> Mar 15 01:30:14 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: mkdir(/run/media/computer/Storage/Email/fastmail) failed: >> Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w >> perm: /run/media/computer, we're not in group 0(root), dir owned >> by 0:0 mode=0775) >> > > Maybe try fix these? > > > Aki >

1 0

ACL Folders are open but not being displayed ? [2.3.3]
by Kunal A. 15 Mar '19

15 Mar '19

Hey, Could someone help figure out whats wrong with my config based on the debug below? What I am trying to achieve is to get email1(a)example.com to read emails in the Public directory that is stored on /run/media/computer/Storage/Email/fastmail/Archive with the preface Public/Archive . The ACL has been set for anyone with permissions to lookup,read,write as shown below:- doveadm acl get -u email1(a)example.com Public/Archive ID Global Rights anyone lookup read write But when I try to access the emails for email1(a)example.com , there are no folders. Could someone here help review my debug log and advise what could be causing this (dovecot -n output is provided below the debug message) Many thanks for assistance. Thanks Debug Message: Mar 15 01:26:47 machine dovecot[2100]: imap-login: Login: user=< email1(a)example.com>, method=PLAIN, rip=::1, lip=::1, mpid=5167, secured, session=<i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB> Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Loading modules from directory: /usr/lib64/dovecot Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib01_acl_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib02_imap_acl_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib10_quota_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib11_imap_quota_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vhosts/ example.com/email1 Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: quota: No quota setting - plugin disabled Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace inbox: type=private, prefix=INBOX/, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: maildir++: root=/var/mail/vhosts/example.com/email1/Maildir, index=, indexpvt=, control=, inbox=/var/mail/vhosts/example.com/email1/Maildir, alt= Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: initializing backend with data: vfile Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: acl username = email1(a)example.com Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: owner = 1 Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: Global ACLs disabled Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace : type=public, prefix=Public/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=maildir:/run/media/computer/Storage/Email/fastmail:LAYOUT=fs Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: fs: root=/run/media/computer/Storage/Email/fastmail, index=, indexpvt=, control=, inbox=, alt= Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: initializing backend with data: vfile Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: acl username = email1(a)example.com Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: owner = 0 Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: Global ACLs disabled Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace : type=private, prefix=, sep=, inbox=no, hidden=yes, list=no, subscriptions=no location=fail::LAYOUT=none Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: none: root=, index=, indexpvt=, control=, inbox=, alt= Mar 15 01:28:37 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Mailbox INBOX: Mailbox opened because: SELECT Mar 15 01:28:37 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: file /var/mail/vhosts/ example.com/email1/Maildir/dovecot-acl not found Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Mailbox Public/Archive: Mailbox opened because: SELECT Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: no access to file /run/media/computer/Storage/Email/fastmail/Archive/dovecot-acl Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: open(/run/media/computer/Storage/Email/fastmail/dovecot-acl-list) failed: Permission denied Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: stat(/run/media/computer/Storage/Email/fastmail) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w perm: /run/media/computer/Storage/Email/fastmail stat(/run/media/computer/Storage/Email/fastmail) failed: Permission denied, dir owned by 0:0 mode=0775) Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace Public/: Using permissions from /run/media/computer/Storage/Email/fastmail: mode=0700 gid=default Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: stat(/run/media/computer/Storage/Email/fastmail/.temp.e480machine.5167.a6506e27bd37a68a) failed: Permission denied Mar 15 01:29:35 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Mailbox INBOX/Public/Archive: Mailbox opened because: SELECT Mar 15 01:29:35 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: file /var/mail/vhosts/ example.com/email1/Maildir/.Public.Archive/dovecot-acl not found Mar 15 01:30:14 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: file /var/mail/vhosts/ example.com/email1/Maildir/.Trash/dovecot-acl not found Mar 15 01:30:14 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: mkdir(/run/media/computer/Storage/Email/fastmail) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w perm: /run/media/computer, we're not in group 0(root), dir owned by 0:0 mode=0775) Mar 15 02:00:14 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Disconnected for inactivity in=155 out=1494 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 dovecot -n Output : # 2.3.3 (dcead646b): /etc/dovecot/dovecot.conf # OS: Linux 4.20.14-200.fc29.x86_64 x86_64 Fedora release 29 (Twenty Nine) # Hostname: machine auth_mechanisms = plain login mail_debug = yes mail_gid = vmail mail_location = maildir:~/Maildir mail_plugins = acl quota mail_privileged_group = mail mail_uid = vmail mbox_write_locks = fcntl namespace { list = children location = maildir:/run/media/computer/Storage/Email/fastmail:LAYOUT=fs prefix = Public/ separator = / subscriptions = yes type = public } namespace inbox { inbox = yes list = 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 = INBOX/ separator = / } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_shared_dict = file:/var/mail/vhosts/example.com/Sharedbox } postmaster_address = postmaster at example.com protocols = imap pop3 service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_cipher_list = PROFILE=SYSTEM ssl_key = # hidden, use -P to show it userdb { driver = passwd } userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol lmtp { mail_plugins = quota acl sieve quota } protocol lda { mail_plugins = quota acl sieve } protocol imap { mail_plugins = acl quota imap_acl quota acl imap_quota }

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dovecot.conf "local hostname" uses only one resolved value
by James 14 Mar '19

14 Mar '19

https://wiki.dovecot.org/SSL/DovecotConfiguration#Different_certificates_pe… says: local 192.0.2.10 { # instead of IP you can also use hostname, which will be resolved However if the name resolves to multiple values only one is used. Test. Choose any name with multiple values, I created a local name: $ nslookup multi.lan Server: 127.0.0.1 Address: 127.0.0.1#53 Name: multi.lan Address: 192.168.1.2 Name: multi.lan Address: 192.168.1.3 Name: multi.lan Address: 192.168.1.1 Minimal dovecot.conf: local multi.lan { protocol imap { ssl_cert = </path/to/certs/multi.lan.crt ssl_key = </path/to/certs/multi.lan.key } } $ dovecot -n -c dovecot.conf # 2.3.5 (513208660): dovecot.conf ... local 192.168.1.2 { protocol imap { ssl_cert = </path/to/certs/multi.crt ssl_key = # hidden, use -P to show it } } Only 192.168.1.2 appears. In my real case with A and AAAA records, only the AAAA record is used. Testing with "openssl s_client -starttls imap ..." gives me the wrong certificate for the IPv4 address. Workaround: specify all addresses and do not use lookup. James.

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dovecot/config processes one more time - which are safe to kill?
by Arkadiusz Miśkiewicz 14 Mar '19

14 Mar '19

Hello. The problem with dovecot/config processes never ending and spawning new one on each reload (https://www.dovecot.org/list/dovecot/2016-November/106058.html) is becoming a problem here: # ps aux|grep dovecot/config|wc -l 206 That's a lot of wasted memory - dovecot/config processes ate over 30GB of ram on 64GB box. Before killing dovecot/config processes: # free -m total used free shared buff/cache available Mem: 64437 61656 483 0 2297 after: # free -m total used free shared buff/cache available Mem: 64437 23676 37822 0 2939 Currently on dovecot 2.3.3. I guess it's very low priority to handle that, so: how can I figure out which dovecot/config processes are safe to be killed by external script? Does "all beside 2 newest ones" rule look sane? Thanks, -- Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )

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