- dovecot - dovecot.org

submission proxy -- where to config/present client cert?
by PGNet Dev 20 Jul '20

20 Jul '20

I've a dovecot instance setup with submission proxy, protocols = imap lmtp submission sieve hostname = internal.mx.example.com submission_relay_host = internal.mx.example.com submission_relay_port = 465 submission_relay_trusted = yes submission_relay_ssl = smtps submission_relay_ssl_verify = yes service submission-login { inet_listener submission { address = 10.2.2.10, 127.0.0.1 port = 50465 ssl = yes } } protocol submission { ssl_cert = < /sec/vmail/mx.example.com.server.EC.crt.pem ssl_key = < /sec/vmail/mx.example.com.server.EC.key.pem ssl_verify_client_cert = no } It submits to a postfix instance, atm on the same host, [internal.mx.example.com]:465 inet n - n - - smtpd -o smtpd_tls_req_ccert=no with that setup, all works as expected. If I turn ON required client cert verification @ postfix, - -o smtpd_tls_req_ccert=no + -o smtpd_tls_req_ccert=yes with that add'l req't, postfix log reports "no client certificate presented" Jul 18 14:52:38 mx postfix/submit-from-dovecot/smtpd[37133]: connect from internal.mx.example.com[10.2.2.10] Jul 18 14:52:39 mx postfix/submit-from-dovecot/smtpd[37133]: Anonymous TLS connection established from internal.mx.example.com[10.2.2.10]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384 Jul 18 14:52:39 mx postfix/submit-from-dovecot/smtpd[37133]: NOQUEUE: abort: TLS from internal.mx.example.com[10.2.2.10]: No client certificate presented Jul 18 14:53:09 mx postfix/submit-from-dovecot/smtpd[37133]: disconnect from internal.mx.example.com[10.2.2.10] commands=0/0 Clearly, I'm missing config. What in my dovecot submission config^^ do I need to change/add to get it to 'present' a client cert to the postfix relay for client cert verification?

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Set mail to only display mail within 30 or 60 days
by lty 20 Jul '20

20 Jul '20

Set mail to only display mail within 30 or 60 days, Here are two examples. 1. normal E.g: A654 FETCH 2:4 (FLAGS BODY[HEADER.FIELDS (DATE FROM)]) * 2 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {73} Date: Tue, 07 May 2020 12:26:55 +0800 From: <test(a)www.chengmail.ml> ) * 3 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {62} Date: Tue, 07 May 2020 12:35:34 +0800 From: lty(a)cndns.com ) * 4 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {62} Date: Tue, 07 Jul 2020 17:41:53 +0800 From: lty(a)cndns.com ) A654 OK Fetch completed (0.002 + 0.000 + 0.001 secs). 2. Set to display mail within 30 days E.g: A654 FETCH 2:4 (FLAGS BODY[HEADER.FIELDS (DATE FROM)]) * 4 FETCH (FLAGS (\Seen) BODY[HEADER.FIELDS (DATE FROM)] {62} Date: Tue, 07 Jul 2020 17:41:53 +0800 From: lty(a)cndns.com ) A654 OK Fetch completed (0.002 + 0.000 + 0.001 secs). Is there any way to display the result of case 2? I found lua. https://doc.dovecot.org/admin_manual/lua/#mail-lua But I don't know how to edit the lua script, Are there more examples? I also watched the help, but it doesn't help much. https://doc.dovecot.org/configuration_manual/authentication/lua_based_authe… https://doc.dovecot.org/configuration_manual/push_notification/#lua-push-no… Can Lua fulfill my needs?

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I need some help with my Dovecot and Postfix configs - I'm unable to log in on my mail server
by Nils 19 Jul '20

19 Jul '20

Hello, currently I'm working on my first mailserver but I can't log in to the account I made. For now my client (Mozlla Thunderbird) detects the server config (STARTTLS, Port, ...) but it is "Unable to log in at server. Probbly wrong configuration, username or passsword". I know that I added username and password correctly so there must something else be wrong. I run Debian 10 x64 on a fresh installation. Installed are: postfix, postfix-pcre, dovecot-core, dovecot-imapd and dovecot-pop3d. Dovecot is version 2.3.4.1, Postfix is 3.4.10. Here are my configurations: Postfix main.cf: https://pastebin.com/S17jWDQd Postfix master.cf: https://pastebin.com/W0nynZG6 dovecot.conf: https://pastebin.com/tMD90Znn This is what my server logs (mail.info, mail.warn) tell me: root@bgrsld-mail0:~# tail /var/log/mail.info Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]: improper command pipelining after EHLO from unknown[192.168.2.110]: QUIT\r\n Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8465]: disconnect from unknown[192.168.2.110] ehlo=1 quit=1 commands=2 Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]: disconnect from unknown[192.168.2.110] ehlo=1 quit=1 commands=2 Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: connect from unknown[192.168.2.110] Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: improper command pipelining after EHLO from unknown[192.168.2.110]: QUIT\r\n Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: disconnect from unknown[192.168.2.110] ehlo=1 quit=1 commands=2 Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics: max connection rate 2/60s for (submission:192.168.2.110) at Jul 17 18:22:08 Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics: max connection count 2 for (submission:192.168.2.110) at Jul 17 18:22:08 Jul 17 18:28:19 bgrsld-mail0 postfix/anvil[8473]: statistics: max cache size 1 at Jul 17 18:22:08 root@bgrsld-mail0:~# tail /var/log/mail.warn Jul 17 18:21:50 bgrsld-mail0 postfix/postfix-script[8290]: warning: symlink leaves directory: /etc/postfix/./makedefs.out Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8465]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled Jul 17 18:22:08 bgrsld-mail0 postfix/submission/smtpd[8472]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled Jul 17 18:24:59 bgrsld-mail0 postfix/submission/smtpd[8485]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled (I removed any information from older issues that are already solved, thats why mail.warn misses a few lines and there is no mail.err, mail.err hadn't any newer messages) Here is my only line from dovecot's userpass file (/maildata/userpass): nils@intern.xxx.xxx:{CRYPT}$2y$05$kkxElxFGsLSyTJwbEaPZzO/QA33vGY3oGyHcgEZa9rpklgBTKQw9O My postfix vhosts file (/maildir/vhosts) intern.xxx.xxx My postfix vmaps file (/maildir/vmaps) nils(a)intern.xxx.xxx intern.xxx.xxx/nils/ I've also created the hased database with 'postmap /maildata/vmaps' This is the script I've used to create my user database: https://pastebin.com/9uViNqjB I haven't worked with postfiy or dovecot yet so there are many things I don't know. Because of this a lot of my configurations is copied from an iRedMail installation. I know that taking these configs may cause some problems but I don't know where to change them or what else is wrong or missing. Thank you for any help!

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Sieve and handling multiple addresses
by ＠lbutlr 19 Jul '20

19 Jul '20

I an trying to write a sieve action that will take mail that is addressed to a user only it is filed in a mailbox (e.g. "Direct") if it is to the email AND to any other email address, then file it in a mailbox named, e.g. "Cc". And if the mail is not addressed to the user at all, sieve does nothing with it. Message 1: to foo(a)example.com => Direct Message 2: to/cc foo(a)example.com & to/cc to anyone(a)anydomain.tlf => CC Optional: If it contains a specific header like "X-bypass: secret string" => no action Message 3: NOT to/cc foo(a)example.com => no action I've gotten exactly nowhere so far Something like if :allof (header :contains ["to"] ["foo#example.com"], header :contains ["cc"] ["foo#example.com"]) Takes care of the first part of the message 1 and 2 criteria. But then what? -- Was it everything you wanted to find? and did you miss me while you were looking for yourself out there?

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problem with client using TLS
by ratatouille 18 Jul '20

18 Jul '20

Hello! On my testserver running CentOS8 I have installed dovecot v2.3.8. I can connect to the server using claws-mail on my PC but can't using K9-mail on android device. Jul 18 12:24:57 imap-login: Debug: SSL: where=0x10, ret=1: before SSL initialization Jul 18 12:24:57 imap-login: Debug: SSL: where=0x2001, ret=1: before SSL initialization Jul 18 12:24:57 imap-login: Debug: SSL: where=0x2002, ret=-1: before SSL initialization Jul 18 12:24:57 imap-login: Debug: SSL: where=0x2002, ret=-1: before SSL initialization Jul 18 12:24:57 imap-login: Debug: SSL: where=0x2001, ret=1: before SSL initialization Jul 18 12:24:57 imap-login: Debug: SSL alert: where=0x4008, ret=582: fatal protocol version Jul 18 12:24:57 imap-login: Debug: SSL: where=0x2002, ret=-1: error Jul 18 12:24:57 imap-login: Debug: SSL error: SSL_accept() failed: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol Jul 18 12:24:57 imap-login: Info: Disconnected (no auth attempts in 0 secs): user=<>, rip=87.182.44.142, lip=185.84.81.115, TLS handshaking: SSL_accept() failed: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol, session=<uppwr7SqrrpXtiyO> Jul 18 12:24:57 imap-login: Debug: SSL error: SSL_accept() syscall failed: Invalid argument Tried different settings without luck. grep -v '^#' 10-ssl.conf ssl = yes ssl_cert = </etc/letsencrypt/live/smtp.dualbit.de/fullchain.pem ssl_key = </etc/letsencrypt/live/smtp.dualbit.de/privkey.pem ssl_dh = </etc/dovecot/dh.pem ssl_min_protocol = TLSv1.2 ssl_cipher_list = PROFILE=SYSTEM ssl_prefer_server_ciphers = yes Can somebody help solving this? Kind regards Andreas

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Non-standard socket locations w/ Dovecot + AWS Linux
by Antonio Leding 17 Jul '20

17 Jul '20

# === The post relates to Dovecot v2.2 running on AWS Linux v1 === # Hello all… The Dovecot sockets on this server are installed in two different locations one of which is different from what I have on my other Dovecot installations which run on Centos-7. Here are the sockets paths: — all sockets EXCEPT "auth-master” —> "/usr/local/var/run/dovecot” <<<<< this appears to be the default for this server — "auth-master” —> "/var/run/dovecot” <<<<< without this statement, Dovecot authentication always failed. The config stanza for this is shown below: service auth { unix_listener auth-userdb { path = /var/run/dovecot/auth-master mode = 0600 user = vmail } } ============ The above has been working great for several years but the time eventually came where I needed to upgrade. This of course meant I had to move lots of maildata between the servers. Unfortunately, the “auth-userdb" config mentioned above prevented “dsync" from working properly. This is the error I received when trying “dsync”: Error: userdb lookup: connect(/usr/local/var/run/dovecot/auth-userdb) failed: No such file or directory This error led me to the eventual fix which was adding the following to the “dovecot.conf” file: auth_socket_path = /var/run/dovecot/auth-master ============ So, to my questions: (1) Why would the socket path on this AWS installation be different from what I see on my Centos-based Dovecot servers and also what I’ve read in several Dovecot mailer discussions? (2) Can the default socket path be set at compile time? If so, then I'm thinking maybe the AWS folks — for whatever reason — decided to install all sockets (except ”auth-master”) in the “/usr/local/var/run/dovecot” directory. Are there any benefits or reason to do this? (3) Is there any requirement that the “auth-master” socket be located in the “/var/run/dovecot” directory? Also, there is nothing else in that directory — just the “auth-master” socket file — that’s it. (4) Why is “dsync" looking for "auth-userdb" in the “/usr/local/var/run/dovecot” directory despite the “auth" stanza stating it is located elsewhere in "/var/run/dovecot”? (5) And last, why do I need to add the “auth_socket_path” statement to get “dsync” working even though the socket path is stated in the “auth" stanza? Thanks in advance for your time on this. I know this is mostly to help educate me on what is going on so I really appreciate your feedback…

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Namespace issues & duplicate maiboxes
by Antonio Leding 17 Jul '20

17 Jul '20

Hello, I am seeing duplicate mailboxes when I perform the “doveadm mailbox list” command…the output is as follows: ================= INBOX INBOX.Drafts INBOX.Trash INBOX.Sent INBOX.INBOX INBOX.INBOX.Sent Messages INBOX.INBOX.Drafts INBOX.INBOX.Trash INBOX.INBOX.Deleted Messages ================= Here is namespace config that seems to have caused the above duplicates. Please help me understand what I’m doing wrong here…and also, not sure if this is relevant but the client is Apple Mail… ================= namespace inbox { type = private separator = . inbox = yes prefix = INBOX. mailbox Trash { auto = subscribe special_use = \Trash } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } }

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Stuck here - help please
by Kishore Potnuru 17 Jul '20

17 Jul '20

Hi All, I have 2 test servers with the below configuration. ========================== Linux OS - Red Hat Enterprise Linux Server release 7.7 (Maipo) Dovecot version - 2.2.36 (1f10bfa63) Postfix version - 2.10.1 ========================== Trying to create High Availability. I have added both of the above servers behind a F5 load balancer. I have got a Load Balancer FQDN "intl-dev-imaptest.testorg.com". I have enabled/opened the ports (25/110/143/993/995) on the above " intl-dev-imaptest.testorg.com". When I send 10 emails to "intl-dev-imaptest.testorg.com", then those 10 emails are getting distributed between the above 2 backend servers (5 emails to each server). I see those 5 emails each in both the servers. >From Outlook I have configured the email address using "POP and IMAP", when I gave the IMAP server as "intl-dev-imaptest.testorg.com" ,then it shows only 5 emails from server1 in outlook and after a few seconds/minutes, automatically it shows/refreshes the other 5 emails from server2. But I am not seeing all the 10 emails at the same time. why? So I tried the sync command. When I execute sync command like below from server1, it reflects the same emails in other server2 also. Then I see the same number of emails in both the servers. Is it not possible to access the both servers emails at one time with the "sync" command? Do we need to run this on all the email boxes on both servers? don't we miss/lose any emails during this sync process multiple times? "doveadm sync -f -u kishore(a)test.testorg.com remote:vmail@bal3200dev002.testorg.com" Is "replication" and "sync" are same? Why are we not able to see all the emails at one time without the "sync" command? What is the best and easiest way to create High Availability with just 2 servers, like emails should travel to both servers equally and if one server goes down also, another server should take care of the emails/functionality. This is my requirement. My current real time environment: I have around 10 email domains and each domain is having 10 imap emails. In total around 100 email boxes/addresses. We receive around 50K emails in a day to those email addresses. We are using the "Maildir" format in our environment. Want to move to the High Availability option with 2 servers. Please help me to fix the issue. Thanks & Regards, Kishore Potnuru

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Outlook vs Thunderbird
by The Doctor 16 Jul '20

16 Jul '20

Got a client that usually uses Outlook I think 2010. This person tends to move their e-mails to certain folers. On Thunderbird, the move shows. Not on Outlook. Any explanation? -- Member - Liberal International This is doctor@@nl2k.ab.ca Ici doctor@@nl2k.ab.ca Yahweh, Queen & country!Never Satan President Republic!Beware AntiChrist rising! https://www.empire.kred/ROOTNK?t=94a1f39b A full cup must be carried steadily. -English proverb

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Variable expansion in passwords
by lukn 16 Jul '20

16 Jul '20

Hello list A user reports failure to log in after password change. The client side error message indicates a lost or dropped connection by the server. A peek into the server logs reveales this: dovecot: imap(user(a)example.com)<53267><el0HoZGqHIdb0K2G>: Error: Failed to expand plugin setting plain_pass = 'asdf%?asdf': Unknown variable '%?' This looks a lot like a %-variable in the user provided password is tried to be expanded... Is this a bug or did I misconfigure something? output of dovecot -n is attached. regards lukn

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