March 2019 - dovecot - dovecot.org

child-wait.c and [-Wnull-pointer-arithmetic]
by Rupert Gallagher 18 Mar '19

18 Mar '19

Attached warnings from clang 7.0 when compiling child-wait.c from dovecot 2.3.5: "arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension [-Wnull-pointer-arithmetic]".

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LDAP users issue
by Anushka Bandara 18 Mar '19

18 Mar '19

Hi Team, I have enabled LDAP authentication with webmail client and it works successfully. But I found an error with LDAP user's mail. Email is not loaded when I log with an LDAP user. Login phase is successful and mail box is the issue. I created a mail user without including LDAP and that user works fine. Issue comes only with LDAP users. *Anushka Bandara* Research Engineer Lanka Software Foundation +94715846018

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Upgrade from 2.1.17 2.2.36
by lty 18 Mar '19

18 Mar '19

v2.1.1 v2.2.36 The screenshot is the result returned by imap. I don't want to want dovecot to return time, can I close it?

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`Spam' folder creation for multiple users
by Marek Kozlowski 17 Mar '19

17 Mar '19

:-) I've just added pigeonhole and a simple sieve script: ------------------------------------------------- require "fileinto"; if header :contains "X-Spam-Flag" "YES" { fileinto "Spam"; } ------------------------------------------------- If a user has this folder (`Spam') it works fine. If they haven't it results in an error. 1. Can I modify the script to create this folder if the need arise? 2. If not - what's the most recommended way of adding this folder for all users (~1000)? Thanks! Best regards, Marek

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MikroTik Users Contact List
by Kathleen Brown 17 Mar '19

17 Mar '19

Hello, Hope you're having a great day! I just wanted to know if you're looking to acquire MikroTik Users Contact List for your marketing efforts? Information Field: Names, Title, Email, Phone, Company Name, Company URL, Company physical address, SIC Code, Industry and Company Size (Revenue and Employee). Kindly review and let me know of your target interest so that I can get back to you with the exact counts and sample file. Do let me know if you have any questions for me. Regards, Kathleen Brown Database Executive If you do not wish to receive these emails. Please respond Exit.

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lda: Unknown mail storage driver maildir
by Rob De Langhe 17 Mar '19

17 Mar '19

hi all, I have a successful (self-compiled from source code) Dovecot v2.2.16 setup active on my Solaris-10 server, with mails stored in user's $HOME/Maildir The mails are fetched from the ISP with "fetchmail", using a "cron" job fetchmail -f $HOME/etc/pop3.myisp where the file "$HOME/etc/pop3.myisp" contains set logfile fetchmail.log poll pop.myisp.be with proto POP3 user myIspmailLogin there with password myIspPwd is rob here nokeep mda "/programs-3.2/amd64/64/libexec/dovecot/deliver" Now I want to get it also running on a Debian server, with the same Dovecot version, and exactly the same config files, but here I get the following messages in "/var/log/mail.log" when launching a "fetchmail" attempt : Mar 17 14:36:20 apps_b dovecot: lda(rob): Debug: Effective uid=1000, gid=1000, home=/home/rob Mar 17 14:36:20 apps_b dovecot: lda(rob): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=no, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir Mar 17 14:36:20 apps_b dovecot: lda(rob): Error: User initialization failed: Namespace '': Unknown mail storage driver maildir Mar 17 14:36:20 apps_b dovecot: lda(rob): Fatal: Invalid user settings. Refer to server log for more information. So it seems to be complaining about "maildir" storage driver ?! My config is: # /programs/3.4/x86_64/64/sbin/dovecot -n -c /usr/local/dovecot/dovecot.conf # 2.2.16: /usr/local/dovecot/dovecot.conf # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.4 disable_plaintext_auth = no first_valid_gid = 1000 first_valid_uid = 1000 last_valid_gid = 1500 last_valid_uid = 2000 mail_debug = yes mail_location = maildir:~/Maildir namespace inbox { 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 = } passdb { args = * driver = pam } postmaster_address = rob(a)mydomain.be ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd }

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LMTP Proxy failure using master login via destuser field
by Dirk 17 Mar '19

17 Mar '19

Hi list, I set up dovecot as IMAP proxy using a master user to login into the backend and it works beautifully. 👍🏻 Next I set out to do LMTP proxying and I struggled (initially). I got the log message: Mar 17 11:23:44 mail postfix/lmtp[2665]: 99A3F219C8: to=<johnny(a)doe.com>, relay=10.15.1.2[10.15.1.2]:24, delay=5.1, delays=4.9/0.05/0.01/0.07, dsn=5.1.1, status=bounced (host 10.15.1.2[10.15.1.2] said: 550 5.1.1 <"johnny(a)doe.com*director"@mail.server.com> User doesn't exist: "johnny(a)doe.com*director"@mail.server.com (in reply to RCPT TO command)) My director's passdb setting looked like this: passdb { driver = sql args = /etc/dovecot/sql/my-passdb.conf result_success = continue-ok result_failure = return-fail result_internalfail = return-fail } # Add director master user credentials if above succeeded passdb { driver = static args = proxy=y starttls=any-cert \ destuser=%u*director(a)example.com \ pass=correcthorsebatterystaple \ nopassword=y skip = unauthenticated } In the end I found that setting the `master` field instead of `destuser` solves the issue. It looks like LMTP does not know how to handle the master user separator although set. I this known/wanted behavior? Maybe this is something to mention on the wiki page, it took a while to figure this out... Kind regards, Dirk Mit freundlichen Grüßen Dirk Weise DevOps Engineer -- bitloft GmbH | Schulstraße 2 | D-42551 Velbert www.bitloft.de | weise(a)bitloft.de Telefon: +49 2051 40514-32 Geschäftsführer: Robin Clemens, Franz-Josef Wieneke Amtsgericht Wuppertal HRB 17297 | USt-IDNr. DE121540053

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testing dovecot LMTP with postfix/spamassassin
by Marek Kozlowski 17 Mar '19

17 Mar '19

:-) My postfix configuration is quite complex with a lot of special cases and rules. However I'd like to make an anti-spam configuration as simple and lightweight as possible (KISS). /etc/postfix/master.cf ------------------------------------------------------------------------ smtp inet n - n - - smtpd -o content_filter=spamassassin spamassassin unix - n n - - pipe user=nobody argv=/usr/bin/vendor_perl/spamc -e /usr/sbin/sendmail -oi -f ${sender} ${recipient} ------------------------------------------------------------------------ then the simplest sieve rule I can think of: ------------------------------------------------------------------------ require "fileinto"; if header :contains "X-Spam-Flag" "YES" { fileinto "Spam"; } ------------------------------------------------------------------------ I'd like to make this rule active for only local deliveries via dovecot LMTP with sieve plugin and setting postfix `mailbox_transport' to dovecot LMTP. I believe it is so simple it should work (am I wrong?). But... It would be more convenient to do some tests before applying changes to a production environment config. The problem is: I have no separate testing environment with my strange configuration I'm able to test a spamassassin score for an e-mail manually. How about dovecot LMTP? Can I test local mail delivery by dovecot LMTP manually? I mean: to simulate "I'm the Postfix" and produce for some testing e-mail the same effect as postfix granting it via `local_transport' to dovecot? Best regards, Marek

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LMTP: Undelivered Mail Returned to Sender: User doesn't exist! :-(
by Marek Kozlowski 17 Mar '19

17 Mar '19

:-) I'm using postfix for mail delivery and dovecot for mailbox access imaps pop3s. Postfix resolves, verifies and overwrites users' addresses by numerous subtle LDAP queries. However users are visible as local ones (openldap, pam, nss) in the sense I can run `id' or `finger' queries and receive replies. Dovecot handles all mailboxes over imap/pop correctly with no additional configuration for LDAP. Just (10-mail.conf): mail_location = maildir:/mailboxes/%u and it works fine. Because I'd like to use pigeonhole I'm trying to make local delivery via dovecot LMTP (https://wiki2.dovecot.org/HowTo/PostfixDovecotLMTP) I've configured the socket and added to `/etc/postfix/main.cf' the line: mailbox_transport = lmtp:unix:/var/spool/postfix/private/dovecot-lmtp I think that id dovecot handles mailboxes correctly over imap/pop it can easily find the users and their mailboxes so it doesn't need any additional configuration for LDAP. Unfortunately it doesn't work and results in: Undelivered Mail Returned to Sender: User doesn't exist! :-( What's the thing I've missed? Best regards, Marek

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How to create sent items, drafts and so on
by Sakuma, Koshiro 17 Mar '19

17 Mar '19

Hello, I've setup Dovecot and Postfix mailing systems. The protocol is imap. Now, I've realized that there are no "sent items, drafts" boxed under Maildir for each users. I would like to take back up Inbox, sent items, draft boxes. For sent items box, it seems to be stored in outlook client file which is "ost". The configuration parameters and version is as follows. I can see that "namespace" has been configured. How can I setup to see these folders? Thank you for your support! 1. Dovecot version ->2.2.36 2. dovecot -n ----------------------------------------------------------------------------------------------------------- #2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf # OS: Linux 3.10.0-957.5.1.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) # Hostname: mail.corp-associe.com auth_mechanisms = plain login auth_verbose = yes disable_plaintext_auth = no first_valid_uid = 1000 listen = * log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:~/Maildir mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = scheme=CRAM-MD5 username_format=%u /etc/dovecot/users driver = passwd-file } protocols = imap service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } ssl_cert = </etc/letsencrypt/fullchain1.pem ssl_key = # hidden, use -P to show it userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file } userdb { args = uid=vmail gid=vmail home=/var/spool/virtual/%d/%n driver = static }

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