- dovecot - dovecot.org

Custom SASL authentication
by David Koski 19 Apr '23

19 Apr '23

Hello, I'm looking for a good way to apply a custom hash to passwords. My hope is to add passwords to a (MySQL) database: INSERT INTO users (user='joblo', pass=MYHASH('plain-password').. For SASL authentication, my thought first was to apply the same hash to the issued password and compare it with the hashed password in the database. I soon discovered the sql driver supplied by Dovecot doesn't provide that ability, unless I'm missing something. I'm looking for documentation on how to implement a custom authentication script if needed. Regards, David Koski dkoski(a)sutinen.com

4 6

imap Error: rename failed: Too many links
by Andrey Repin 18 Apr '23

18 Apr '23

Greetings, All! I'm facing a problem with one particular directory in a mailbox. The exact error line is: Apr 7 12:00:21 mxs dovecot: imap(vera): Error: rename(/home/vera/.mail/INBOX/Майя Николаевна/new/1678353168.M710968P25673.mxs.ads.ccenter.lan,S=5442,W=5513:2,ST, /home/vera/.mail/INBOX/Майя Николаевна/cur/1678353168.M710968P25673.mxs.ads.ccenter.lan,S=5442,W=5513:2,ST) failed: Too many links The rest of the mailbox behave correctly, as I can tell, but this specific subdir fails to report unread mail correctly. What are the options to fix it? # dovecot --version 2.2.22 (fe789d2) Config is in attachment, but I doubt it is of any interest. -- With best regards, Andrey Repin Friday, April 7, 2023 16:37:09 Sorry for my terrible english...

4 6

Maildir compression
by Jose David Bravo A 18 Apr '23

18 Apr '23

Hello, I would like to compress the maildir of some of our users, I'm thinking to use this script: [ https://github.com/George-NG/dovecot-maildir-compress/blob/master/dovecot-m… | https://github.com/George-NG/dovecot-maildir-compress/blob/master/dovecot-m… ] My question is, how dovecot will calculate the quota for that user after the compression? will dovecot calculate the quota of that user using the real size of the message file after compression, or the plain size before compression? Is it necessary to recreate the index of that maildir after the compression is made? If so, what command should I use? Thank you! Jose Bravo

2 1

Confusion re doveadm pw and protected private keys
by Paul Kroitor 18 Apr '23

18 Apr '23

Hello, It seems from this thread at letsencrypt : https://community.letsencrypt.org/t/changing-permissions-for-pem-files/19656 1 (see especially second post from _az) that doveadm pw now parses all files in the config, even ones not relevant to the pw aspect of the request. If it's not able to access all the files, it terminates prematurely with exit code 89. The result, at least for anyone using letsencrypt / certbot, is that doveadm pw fatally fails unless run as root, because the config includes the private key, which has permissions 600 root root. This makes the dovecot pw functionality unusable for web apps that want to calculate a password hash using it (e.g. RoundCube's password change feature). My understanding is that dovecot only really needs the private key for its main functionality, when it's running as root, and that there's no reason doveadm pw, which should (presumably) often be run as a regular user, needs access to it. Is this the intended behavior, or have I got something wrong? Thanks for all help, Paul

2 1

Shared / Public mailbox
by Stephane MAGNIER 15 Apr '23

15 Apr '23

Hi I wish to create a share mailbox ( well.. Apparently, this is a public mailbox). Let's say I have 2 users : user1 & user2 and the need to share a mailbox for "general inquiries" emails.. Despite of the 2 users' account creation ( user1 & user2) , should I create a third email account ( info1) for general inquiries for instance and instruct Dovecot that this mail box has to be shared ? In that case, logically, I have to declare into: "15-Mailboxes.conf" |namespace { type = public separator = / prefix = Public/ location = maildir:|||/var/spool2/mail|/info1/:CONTROL=/var/spool2/mail/Maildir/info1:INDEX=|||/var/spool2/mail|/info1 # Allow users to subscribe to the public folders. subscriptions = yes } | |and add a file : /etc/dovecot/dovecot-acl| || ||||/var/spool2/mail|/info1/| user=user1,user2 lrwstipekxa ||/var/spool2/mail|/info1|/* user=user1,user2 lrwstipekxa and add the plugin : plugin { acl = vfile }|| Is that the way to do it ? 2) Now what is the difference between a shared and Public mailbox ? I can see that the plugin is slightly different : |acl_shared_dict| <https://doc.dovecot.org/settings/plugin/acl-plugin/#plugin_setting-acl-acl_…> For me a "public"email folder is for sharing emails.. My understanding is: general email account can be shared ( like info1 in my example).. this is called a public mailbox.( specific email account, shared between users). So what is called a "Shared mailbox" ????? Thanks for your help ?

4 5

Mailing list update
by Aki Tuomi 13 Apr '23

13 Apr '23

Hi all! We finally managed to move from mailman2 to mailman3, and mail archives are now at https://dovecot.org/mailman3/archives and they can be now searched, too. Please let us know if you have face any issues with the mailing list and we'll look into it. Regards, Aki Tuomi Open-Xchange oy

4 9

Mailing list changes.
by dovecot＠ptld.com 13 Apr '23

13 Apr '23

I noticed starting today the Sender: header is no longer included on the mailing list. I used to use the Sender: header in sieve rules for sorting. Now the list emails only come From: rando email addresses. On the postfix mailing list it replaces the From: header with the list address instead of keeping the original email author. Is this the future intended behavior? Or can we get a Sender: or From: header to contain the list address for sorting?

3 3

Dovecot restoration.... problem
by Stephane Magnier 13 Apr '23

13 Apr '23

Hi, In the past, I've done a Dovecot Backup with a Rsync cmd... every day Today I need to get back these mailboxes.. and doesn't work out 1) first of all, I tried to make a simple copy... Now way . Couldn't access the INBOX Do you think that it could work that way ? I don't need to synchronized every minute. once a day is OK for me. 2) I did use the instruction doveadm --import -u user1 maildir:/home/user1/mail/ "" ALL It did start copying but apparently cannot got until the end... but noting visible onto Thunderbird... I didn't do any synchro between 2 dovecot servers. I just need to make a copy some times to times and rsync seemed to be a good option. But now, How can I get back online ??? Thanks

2 1

decrypt.rb
by Dave 11 Apr '23

11 Apr '23

Per the Dovecot site here: https://wiki.dovecot.org/Plugins/MailCrypt ... the "decrypt.rb" ruby script can be used to decrypt a Dovecot-encrypted message file from the command line. The script sort of runs successfully for me, in the sense that it doesn't error out, but it doesn't show the decrypted message. I've called it like so: decrypt.rb -k <PATH_TO_DOVECOT_KEYFILE> -f ./encrypted_message But when I do it just displays the info below and exits (I've subbed <DATA> tags for the actual data): ------------------[OUTPUT]----------------------- Key(s) (total: 1) - Key type : EC - Key digest: <DATA1> - Peer key : <DATA2> - Encrypted : <DATA3> - Kd hash : <DATA4> ------------------------------------------------------- I've tried specifying an output file as well, per the script's command line options, but the output file is 0 bytes. Does anyone have any suggestions? I *think* I'm using it the way it's intended to be used, but maybe I'm not?! -Dave

5 14

None
by None 11 Apr '23

11 Apr '23

... - maildir: change it to use '/' as hierarchy separator to allow '.' characters (for usernames in shared folders) ... Now changing the separator in the maildir-storage.c is trivial (even though it "can't" be changed :-), but fixing the resultant breakage in maildir-list.c needs a little more understanding. Timo, could you give me some pointers? I can see that I need to work out what imap_match_init() does. My motivation is to follow up on an earlier thread about reusing .mailboxlist files as .subscription files, preferably without rewriting them to replace the slashes with something else. Thanks -- Charlie

1 0