March 2023 - dovecot - dovecot.org

Re: Error: Can't load SSL certificate
by Horst Simon 22 Mar '23

22 Mar '23

The others are on openSUSE 15.4 and macOS, all are binary installs Entware build options Build options: ioloop=epoll openssl io_block_size=8192 SQL drivers: mysql Passdb: checkpassword ldap passwd passwd-file shadow sql Userdb: checkpassword ldap passwd prefetch passwd-file sql macOS build options Build options: ioloop=kqueue notify=kqueue openssl io_block_size=8192 SQL drivers: mysql Passdb: checkpassword pam passwd passwd-file sql Userdb: checkpassword passwd prefetch passwd-file sql openSUSE build options Build options: ioloop=epoll notify=inotify openssl io_block_size=8192 SQL driver plugins: mysql postgresql sqlite Passdb: checkpassword ldap pam passwd passwd-file shadow sql Userdb: checkpassword ldap(plugin) passwd prefetch passwd-file sql The libz.so are for OpenSUSE and the QNap in the same directories withe the same permissions The macOS does not have a libz.so, this dovecot was build by macports. All servers are running dovecot with the same user accounts. At the moment I will look into this issue later and will try to authenticate without using SSL. On the MACs and openSUSE I authenticate using pam, the QNAP does not use pam so I want to authenticate using a local password file, but I have problems to set it up correctly I have changed it 10-auth.conf to use auth-passwdfile.conf.ext and created a password file called userdb. I don’t know what else to change and what exactly should be in the userdb file. The log only shows Mar 20 23:52:45 auth: Debug: auth client connected (pid=6966) Mar 20 23:52:45 imap-login: Info: Disconnected: Aborted login by logging out (no auth attempts in 0 secs): user=<>, rip=192.168.117.5, lip=192.168.117.2, session=<AhJNZ1T3GcDAqHUF> I need to fix this first before I can enable SSL again. Maybe I should open a new threat Horst > > My suggests to look for: > > 1. Are your other servers setups installed from "Entware for QNAP" too? > 2. Do your other servers have libz.so* located under /opt/lib/ too? > 3. Did you compare owner and permissions of every libz.so* file between > servers too? > 4. Are other servers running Dovecot with same user account? > > > El 20/3/23 a les 4:01, Horst Simon ha escrit: >> I try to logon to map using dovecot with SSL required. I get following >> entries in the log:Mar 20 13:49:30 auth: Debug: Loading modules from >> directory: /opt/lib/dovecot/modules/auth >> Mar 20 13:49:30 auth: Debug: Module loaded: >> /opt/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so >> Mar 20 13:49:30 auth: Debug: Read auth token secret from >> /opt/var/run/dovecot/auth-token-secret.dat >> Mar 20 13:49:30 auth: Debug: passwd-file /opt/etc/dovecot/userdb:Read 1 >> users in 0 secs >> Mar 20 13:49:30 auth: Debug: auth client connected (pid=26120) >> Mar 20 13:49:30 imap-login: Error: Failed to initialize SSL server >> context: Can't load SSL certificate (ssl_cert setting): >> error:12800067:DSO support routines::could not load the shared library: >> filename(libz.so): libz.so: cannot open shared object file: No such file >> or directory, error:12800067:DSO support routines::could not load the >> shared library: user=<>, rip=192.168.117.5, lip=192.168.117.2, >> session=<eX3e+Uv3k8DAqHUF> >> Mar 20 13:49:30 imap-login: Info: Disconnected: TLS initialization >> failed. (no auth attempts in 0 secs): user=<>, rip=192.168.117.5, >> lip=192.168.117.2, session=<eX3e+Uv3k8DAqHUF >> >> The library files exist in the include directory >> [/opt] # find . -name libz* -print >> >> ./lib/opkg/info/libzstd.control >> >> ./lib/opkg/info/libzstd.list >> >> ./lib/libz.so >> >> ./lib/libz.so.1 >> >> ./lib/libz.so.1.2.13 >> >> ./lib/libzstd.so >> >> ./lib/libzstd.so.1 >> >> ./lib/libzstd.so.1.5.2 >> >> ./lib/libz.a >> >> >> Have the dovecot settings the same on other servers and it works, >> Dovecot is v2.3.18, installed from Entware for QNAP. Any help?appreciated. >> >> Horst >> >> >> > > -- > > Narcis Garcia >

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ot: how to t/s TBird problems ?
by Voytek Eymont 22 Mar '23

22 Mar '23

I have a Dovecot/Postfix/MariaDB on a Centos, just have a user ask me: ------------------ I recently upgraded my Thunderbird email client and have experienced problems since. It appears that when Tbird polls for new messages it gets held up waiting for a response from the server I'm using POP port 995. Any ideas as to why I'm having a problem ? ------------------- how to investigate such issue ? CentOS release 6.10 (Final) # dovecot --version 2.3.11.3 (502c39af9) load average on server 0.05/0.01 user log shows like: Oct 12 10:08:50 pop3-login: Info: Login: user=<user(a)tld.com.au>, method=PLAIN, rip=49.111.222.333, lip=103.xxx.yyy.zzz, mpid=17371, TLS, session=<E83xW8rqDPkxw3EW> Oct 12 10:09:34 pop3(user(a)tld.com.au)<17371><E83xW8rqDPkxw3EW>: Info: Disconnected: Logged out top=0/0, retr=0/0, del=0/114194, size=10616009472 Oct 12 10:14:36 imap-login: Info: Login: user=<user(a)tld.com.au>, method=PLAIN, rip=49.111.222.333, lip=103.xxx.yyy.zzz, mpid=17460, TLS, session=<ftiLcMrqR/gxw3EW> Oct 12 10:14:37 imap(user(a)tld.com.au)<17460><ftiLcMrqR/gxw3EW>: Info: Logged out in=152 out=69724 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=1 body_bytes=68628 Oct 12 10:28:27 pop3-login: Info: Login: user=<user(a)tld.com.au>, method=PLAIN, rip=49.111.222.333, lip=103.xxx.yyy.zzz, mpid=17714, TLS, session=<+WsXosrqK/gxw3EW> Oct 12 10:29:16 pop3(user(a)tld.com.au)<17714><+WsXosrqK/gxw3EW>: Info: Disconnected: Logged out top=0/0, retr=1/76174, del=0/114195, size=10616085600 Oct 12 10:32:19 imap-login: Info: Login: user=<user(a)tld.com.au>, method=PLAIN, rip=49.111.222.333, lip=103.xxx.yyy.zzz, mpid=17817, TLS, session=<bZftr8rqq/gxw3EW> Oct 12 10:32:20 imap(user(a)tld.com.au)<17817><bZftr8rqq/gxw3EW>: Info: Logged out in=153 out=135592 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=1 body_bytes=134503 Oct 12 10:45:58 imap-login: Info: Login: user=<user(a)tld.com.au>, method=PLAIN, rip=49.111.222.333, lip=103.xxx.yyy.zzz, mpid=18081, TLS, session=<U3674Mrqzfgxw3EW> Oct 12 10:45:59 imap(user(a)tld.com.au)<18081><U3674Mrqzfgxw3EW>: Info: Logged out in=152 out=24602 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=1 body_bytes=23514 Oct 12 10:48:49 pop3-login: Info: Login: user=<user(a)tld.com.au>, method=PLAIN, rip=49.111.222.333, lip=103.xxx.yyy.zzz, mpid=18135, TLS, session=<y1/r6srqtPsxw3EW> Oct 12 10:49:53 pop3(user(a)tld.com.au)<18135><y1/r6srqtPsxw3EW>: Info: Disconnected: Logged out top=0/0, retr=2/166190, del=0/114197, size=10616251743 Oct 12 10:50:42 imap(user(a)tld.com.au)<3274><cr10yqTqifgxw3EW>: Info: Logged out in=192516 out=5957294 deleted=0 expunged=0 trashed=0 hdr_count=263 hdr_bytes=358656 body_count=126 body_bytes=5110403 Oct 12 10:50:42 imap(user(a)tld.com.au)<3271><hLl0yqTqh/gxw3EW>: Info: Logged out in=78324 out=58677 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 Voytek

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iPhone Mail clients generate high Solr I/O
by Alessio Cecchi 22 Mar '23

22 Mar '23

Hi, I'm running a mail server with Dovecot 2.3.20 and Apache Solr as FTS backend. It seems that iPhone/iPad Mail clients are generating some IMAP searches, especially on header Message-ID, that are increasing our Solr I/O load, especially during the night. Are these kind of queries normal? What are they? You can find some logs below. Dovecot logs: Mar 13 21:06:14 dovecot: imap-login: Login: user=<user@domain>, method=PLAIN, rip=x.x.x.x, lip=z.z.z.z, mpid=11263, secured, session=<PQSppM32gePCBJGh> Mar 13 21:06:14 dovecot: imap(user@domain) session=<PQSppM32gePCBJGh>: ID sent: name=iPhone Mail, version=20D67, os=iOS, os-version=16.3.1 (20D67) Mar 13 21:06:14 dovecot: imap(user@domain) session=<PQSppM32gePCBJGh>: Disconnected: Logged out in=207 out=1128 deleted=0 expunged=0 autoexpunged=0 trashed=0 appended=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 Solr logs: 2023-03-13 21:06:14.411 INFO (qtp1671846437-1652) [ x:dovecot] o.a.s.c.S.Request [dovecot] webapp=/solr path=/select params={q={!lucene+q.op%3DAND}hdr:<DB8P189MB08692AE65580C36C3B7D6F53C1F59(a)domain6.tld>+OR+hdr:<\!\%26\!AAAAAAAAAAAYAAAAAAAAAI\/Oo\%2BConZZMkCvmEY7yWqjCgAAAEAAAAP968Yud4n1LmhwJxWgTURQBAAAAAA%3D%3D(a)domain5.tld>+OR+hdr:<CALEb\-gfyeQ1zJhjGKS3V8Rn3gk3byNa9co9nOU1L2BtUtKO0aw(a)domain7.tld>+OR+hdr:<AS4P195MB1790AA65F5F367F3CF0888BEDEA19(a)domain5.tld>+OR+hdr:<24E36A6E5BB2410C8090482B3E1EB40F(a)domain8.tld>&fl=uid,score&sort=uid+asc&fq=%2Bbox:d0f433254ee1b161c82c00002e1056c4+%2Buser:user@domain&rows=88&wt=xml} hits=0 status=0 QTime=275 2023-03-13 21:06:14.511 INFO (qtp1671846437-1628) [ x:dovecot] o.a.s.c.S.Request [dovecot] webapp=/solr path=/select params={q={!lucene+q.op%3DAND}hdr:<af03d59c\-2cd5\-1165\-aea5\-6ce7cfe16a89(a)domain.tld>+OR+hdr:<CAJbcrLvxCOGy6fcKBuhuu9B1SALwm9opS\-\-O\-kcMd3nevKrf1A(a)domain7.tld>+OR+hdr:<00eb01d8c8dc$caa8a580$5ff9f080$(a)domain1.tld>+OR+hdr:<VE1PR08MB4846DD525845DC743D47ED52EEBA9(a)domain7.tld>+OR+hdr:<00c701d8bb83$f307bc70$d9173550$(a)domain1.tld>&fl=uid,score&sort=uid+asc&fq=%2Bbox:d0f433254ee1b161c82c00002e1056c4+%2Buser:user@domain&rows=88&wt=xml} hits=0 status=0 QTime=59 2023-03-13 21:06:14.714 INFO (qtp1671846437-1652) [ x:dovecot] o.a.s.c.S.Request [dovecot] webapp=/solr path=/select params={q={!lucene+q.op%3DAND}hdr:<AS4P195MB179002723893D3932AF83A4CDEA29(a)domain5.tld>+OR+hdr:<F3112D85FDF144319FB0ABE348A75AE5(a)domain8.tld>+OR+hdr:<AM9PR10MB510032098A44B16182C9AAF39C4D9(a)domain8.tld>+OR+hdr:<\!\%26\!AAAAAAAAAAAYAAAAAAAAAI\/Oo\%2BConZZMkCvmEY7yWqjCgAAAEAAAADl2MLfkWRxJjQW\%2B3dOhZn0BAAAAAA%3D%3D(a)domain5.tld>+OR+hdr:<CAJbcrLtAEjLO0wbK5AAp8a3p0iRaoUeKA1wsD2ppDFeMnhL\-kA(a)domain7.tld>&fl=uid,score&sort=uid+asc&fq=%2Bbox:d0f433254ee1b161c82c00002e1056c4+%2Buser:user@domain&rows=88&wt=xml} hits=0 status=0 QTime=178 2023-03-13 21:06:14.771 INFO (qtp1671846437-1628) [ x:dovecot] o.a.s.c.S.Request [dovecot] webapp=/solr path=/select params={q={!lucene+q.op%3DAND}hdr:<DU0P189MB208990AA60E3EB5CB2F9BE98DCD39@domain>+OR+hdr:<DDA00A9A19CE4864AD87EF31B0E2113F(a)domain8.tld>+OR+hdr:<GV1PR01MB882049EDFF560AF4F4444F4BB1EE9(a)domain7.tld>&fl=uid,score&sort=uid+asc&fq=%2Bbox:d0f433254ee1b161c82c00002e1056c4+%2Buser:user@domain&rows=88&wt=xml} hits=0 status=0 QTime=34 2023-03-13 21:06:14.899 INFO (qtp1671846437-1652) [ x:dovecot] o.a.s.c.S.Request [dovecot] webapp=/solr path=/select params={q={!lucene+q.op%3DAND}hdr:<AS4P195MB1790922D3154E37AEF263FD1DEDF9(a)domain5.tld>+OR+hdr:<02E5E16DF27945B6A764F49A5D9E055E(a)domain8.tld>+OR+hdr:<CAEK\-5TdF_f%3Dn\%2BL1VWj3EVP9i%3DQe\%2BWaYcW%3DFNy8GSLfE5O1U7dw(a)domain7.tld>+OR+hdr:<4edb1720076ab71575067b0fc2b5d96c(a)domain2.tld>+OR+hdr:<1657012847.68884591(a)domain6.tld>&fl=uid,score&sort=uid+asc&fq=%2Bbox:4830f5144ee1b161c82c00002e1056c4+%2Buser:user@domain&rows=1&wt=xml} hits=0 status=0 QTime=46 Thanks -- Alessio Cecchi Postmaster @http://www.qboxmail.it https://www.linkedin.com/in/alessice

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Import collection of files containing one raw message each into dovecot
by Markus Schönhaber 21 Mar '23

21 Mar '23

Hi, given a bunch of files, each containing the raw source of a single email message. There's no structural or naming scheme like Maildir or something. Is there a (easy) way to import those mails into dovecot? AIUI doveadm import needs a source location in a supported mailbox format - which doesn't seem applicable here. -- Regards mks

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"doveadm altmove -r" not working ?
by Benoit Branciard 21 Mar '23

21 Mar '23

Hello, I have some trouble using "doveadm altmove -r". Regular "doveadm altmove" is OK, selected mails were moved to alternate storage as expected. But I can't manage to get them back to original location, "doveadm altmove -r" has no effect. We are using Dovecot 2.3.4 (Debian Buster package). mail_location = mdbox:~/mdbox:DIRNAME=_@@_dbox-Mails_@@_:ALT=/slow%h/mdbox doveadm altmove -u myuser since 90d -> some message files are created under /slow/my/homedir/mdbox/storage doveadm altmove -r -u myuser all -> message files are still sitting under /slow/my/homedir/mdbox/storage, none were created into /my/homedir/mdbox/storage. Is there some known issues with doveadm altmove in this version ? Or am I missing something ? I can share more config details if needed. -- Benoit BRANCIARD Université Paris 1 Panthéon-Sorbonne - DSIUN-SIS B405 - Centre PMF - 90 rue de Tolbiac - 75013 Paris Tel. 01 44 07 89 68 http://dsiun.univ-paris1.fr

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Read-only / archive mode for IMAP mailboxes?
by Rᴇɴᴇ́ Pꜰᴇɪꜰꜰᴇʀ 20 Mar '23

20 Mar '23

Hello! We are currently exploring email archiving solutions. Is there a way to use an IMAP mailbox in read-only / archive mode? The requirement is that delibveries of new emails should be possible (via SMTP/LMTP), but no messages should be deleted via IMAP access. Frankly I don't think this works, but maybe some of you have tried this already. Regards, René. -- )\._.,--....,'``. fL Let GNU/Linux work for you while you take a nap. /, _.. \ _\ (`._ ,. R. Pfeiffer <lynx at luchs.at> + https://web.luchs.at/ `._.-(,_..'--(,_..'`-.;.' - System administration + Consulting + Teaching - 📨 Got mail delivery problems? https://web.luchs.at/information/blockedmail.php 📯 Complete contact information: https://web.luchs.at/kontakt/ 🔏 Download latest GPG/PGP keys: https://web.luchs.at/kontakt/gpg.asc ⛔ W͇A͇R͇N͇I͇N͇G͇:͇ ͇D͇O͇ ͇_͇N͇O͇T͇_͇ ͇S͇E͇N͇D͇ ͇E͇M͇A͇I͇L͇S͇ ͇W͇I͇T͇H͇ ͇H͇T͇M͇L͇ ͇C͇O͇N͇T͇E͇N͇T͇ ͇T͇O͇ ͇M͇Y͇ ͇E͇M͇A͇I͇L͇ ͇A͇D͇D͇R͇E͇S͇S͇!͇ ⛔

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Remote backup of IMAP user fails with dsync_remote epoll_ctl error
by dml＠plumeriahale.net 20 Mar '23

20 Mar '23

I’m trying backup a user’s IMAP folders from a system running dovecot 2.1.7. to a system running dovecot 2.3.19.1. After much perusing of the web and Dovecot documentation I tried this: 1) On the 2.1.7 host set up the doveadm server to listen on TCP port 2425 and defined a doveadm_password value 2) Issued the following command on the 2.13.19.1 system: doveadm -o doveadm_password=<password> backup -R -u <username> -S <host>:2425 tcp:<host> 3) The command returned the following errors: Error: doveadm server disconnected before handshake: EOF Error: Command backup failed for <username>: EOF 4) In the Dovecot log on the 2.1.7 system I found the following error message: dsync(<username>): Error: user <username>: Initialization failed: Namespace '': Unknown mail storage driver tcp dovecot: dsync(<username>): Fatal: User init failed A couple of questions: 1) I thought that setting up doveadm-server as an inet_listener (with a password) meant that all communications (including the backup) occurred over that link - is that not correct? Or does SSH also need to be enabled as well? 2) Am I specifying the arguments correctly? The definition of the destination argument is confusing in the documentation - if doveadm is trying to backup a user’s IMAP mailboxes from a remote source, and you’ve already specified the information needed to connect to the remote sources doveadm-server why would the source need to be specified again via the TCP: argument?

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Disable folder creation for details username
by Robert Blayzor 20 Mar '23

20 Mar '23

This may be more of a CPanel issue than Dovecot but CPanel uses Dovecot and not sure if this is a knob we have available in Dovecot or we need to reach out to Cpanel directly to see if this is some custom code they added to their distros. Anyway, W/R/T emails sent with dtails/ + addresses ie: foo+bar(a)mydomain.com And with LDA/LMTP, in Cpanel by default the detials part, in this case "bar" will be created in it's own folder. Automatically. To us, this can be an attack vector/DOS from a malicious actor so we want to turn it off. We understand there is: lda_mailbox_autocreate Which we have yes, as we do want to create mailboxes automatically when the first message comes in, but not these folders. I don't know if this folder autocreation on detail part is a Dovecot thing, or specific to Cpanel. It appears CPanel has a patch/code to option to turn it off, but it's only on a per mailbox basis. We want to turn this behavior off globally. As far as I know, CPanel doesn't release whatever patches they made to make this happen, asking here if anyone has experience with this before we start chasing them for answers. -- inoc.net!rblayzor XMPP: rblayzor.AT.inoc.net PGP: https://pgp.inoc.net/rblayzor/

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Dovecot unified event filtering
by Felix Auringer 20 Mar '23

20 Mar '23

Hello, I have an issue with debug logging when using a custom plugin for Dovecot. In my plugin, I create a child event of the session's user event: ```c struct event *plugin_event = event_create(list->ns->user->event); event_set_name(plugin_event, "oidc_shared_mailboxes_plugin"); event_set_min_log_level(plugin_event, LOG_TYPE_WARNING); event_set_append_log_prefix(plugin_event, "oidc-shared-mailboxes-plugin: "); ``` I then use passthrough events like the following: ``` e_debug(event_create_passthrough(data->event)->event(), "Modified mailbox_list_iter_init was called."); e_warning(event_create_passthrough(event)->event(), "Did not find required key 'roles' in the JWT body."); ``` `e_warning` and `e_error` work fine. If I understand the documentation for the unified event filtering (https://doc.dovecot.org/configuration_manual/event_filter/#unified-filter-l…) correctly, I should be able to enable debug logging for with `log_debug = event="oidc_shared_mailboxes_plugin"`. However, this setting has no influence on the logging behavior. The setting I have to set for the debug logging to work is `mail_debug = yes` (I do not have to set `log_debug` at all). Is this intended behavior or am I doing something wrong? Best regards, Felix Auringer Here is the output of `dovecot -n` (I removed the passdb, userdb, namespace, service, and managesieve settings as they cluttered the output): ``` # 2.3.19 (b3ad6004dc): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.19 (4eae2f79) # OS: Linux 5.10.0-15-amd64 x86_64 Debian 11.6 # Hostname: c3dd5b346d22 auth_mechanisms = plain login xoauth2 oauthbearer debug_log_path = /dev/stdout disable_plaintext_auth = no first_valid_uid = 1000 info_log_path = /dev/stdout last_valid_uid = 1000 log_debug = event="oidc_shared_mailboxes_plugin" log_path = /dev/stdout login_greeting = Hello there! .... GIZ Mail! mail_location = maildir:~/mail mail_plugins = " oidc_shared_mailboxes" plugin { oidc_shared_mailboxes_client_id = dovecot-test } protocols = imap lmtp ``` --- Gesellschaft für interkulturelles Zusammenleben gGmbH (GIZ) Felix Auringer IT Reformationsplatz 2 13597 Berlin Tel: 030/513 0100 00; Fax: 030/513 0100 09 www.giz.berlin; felix.auringer(a)giz.berlin Amtsgericht Charlottenburg HRB 200872 B Geschäftsführerin: Dr. Britta Marschke

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Error: Can't load SSL certificate
by Horst Simon 20 Mar '23

20 Mar '23

I try to logon to map using dovecot with SSL required. I get following entries in the log:Mar 20 13:49:30 auth: Debug: Loading modules from directory: /opt/lib/dovecot/modules/auth Mar 20 13:49:30 auth: Debug: Module loaded: /opt/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so Mar 20 13:49:30 auth: Debug: Read auth token secret from /opt/var/run/dovecot/auth-token-secret.dat Mar 20 13:49:30 auth: Debug: passwd-file /opt/etc/dovecot/userdb:Read 1 users in 0 secs Mar 20 13:49:30 auth: Debug: auth client connected (pid=26120) Mar 20 13:49:30 imap-login: Error: Failed to initialize SSL server context: Can't load SSL certificate (ssl_cert setting): error:12800067:DSO support routines::could not load the shared library: filename(libz.so): libz.so: cannot open shared object file: No such file or directory, error:12800067:DSO support routines::could not load the shared library: user=<>, rip=192.168.117.5, lip=192.168.117.2, session=<eX3e+Uv3k8DAqHUF> Mar 20 13:49:30 imap-login: Info: Disconnected: TLS initialization failed. (no auth attempts in 0 secs): user=<>, rip=192.168.117.5, lip=192.168.117.2, session=<eX3e+Uv3k8DAqHUF The library files exist in the include directory [/opt] # find . -name libz* -print ./lib/opkg/info/libzstd.control ./lib/opkg/info/libzstd.list ./lib/libz.so ./lib/libz.so.1 ./lib/libz.so.1.2.13 ./lib/libzstd.so ./lib/libzstd.so.1 ./lib/libzstd.so.1.5.2 ./lib/libz.a Have the dovecot settings the same on other servers and it works, Dovecot is v2.3.18, installed from Entware for QNAP. Any help appreciated. Horst

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