August 2016 - dovecot

passwd-file extra-fields: inbox=yes
by Michael Fox 02 Aug '16

02 Aug '16

I'd like to implement the virtual plugin so that POP3 users can see emails in their own inbox and a public namespace. As I understand it, I need to set "inbox=yes" separately, depending on which service the user is using. With passwd-file flat files, this means: userdb { args = ... /path/userdb.%s } userdb.imap: set the extra fields for each user = userdb_namespace/inbox/inbox=yes userdb.pop3: set the extra fields for each user = userdb_namespace/virtual/inbox=yes But without even getting to the virtual namespace part, I'm having difficulty getting the extra fields setting to work for a regular IMAP user. Specifically: If I use the Dovecot default settings of namespace inbox, which includes inbox=yes, and do NOT include the extra_fields value shown above, then IMAP users can log in OK. But if I comment out inbox=yes within namespace inbox, and then add the extra fields to userdb.imap (as shown above), (and reload doveadm), then the IMAP user is no longer able to login. Thunderbird displays "Login to server ... failed." and I get the following in syslog (mail.err): Aug 1 13:56:13 n6mef-gw dovecot: imap(mefimp(a)email.n6mef.org): Error: user mefimp(a)email.n6mef.org: Initialization failed: namespace configuration error: Duplicate namespace prefix: "" Aug 1 13:56:13 n6mef-gw dovecot: imap(mefimp(a)email.n6mef.org): Error: Invalid user settings. Refer to server log for more information. I'm at a loss for what's wrong. Can someone help? Userdb.imap test entry and doveconf -n below. Thanks, Michael Userdb.imap: mefimp::::Michael E Fox - mefimp:::userdb_namespace=/namespace/inbox/inbox=yes $ doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.16.0-76-generic x86_64 Ubuntu 14.04.4 LTS auth_mechanisms = cram-md5 auth_verbose = yes mail_gid = vmail mail_location = maildir:~/Maildir mail_plugins = " quota" mail_uid = vmail 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 = /etc/dovecot/deny-users deny = yes driver = passwd-file } passdb { args = scheme=cram-md5 username_format=%n /etc/dovecot/auth.d/%d/passdb driver = passwd-file } plugin { quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=50MB quota_rule2 = Trash:storage=+10%% quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full quota_status_success = DUNNO quota_status_toolarge = 552 5.2.3 Message is too large quota_warning = storage=90%% quota-warning 90 %n %d quota_warning2 = storage=75%% quota-warning 75 %n %d } pop3_lock_session = yes protocols = pop3 imap lmtp service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0600 user = vmail } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3 { executable = pop3 postlogin process_limit = 25 } service postlogin { executable = script-login /etc/dovecot/postlogin.sh group = vmail user = vmail } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { port = 12340 } } service quota-warning { executable = /etc/dovecot/quota-warning.sh user = vmail } ssl = required ssl_cert = </opt/xsc/ssl/certs/n6mef-gw.crt ssl_key = </opt/xsc/ssl/private/n6mef-gw.key ssl_protocols = !SSLv2 !SSLv3 userdb { args = username_format=%n /etc/dovecot/auth.d/%d/userdb.%s default_fields = home=/var/vmail/%d/%n driver = passwd-file } verbose_ssl = yes protocol lmtp { postmaster_address = xxxxxxxxxx } protocol imap { mail_max_userip_connections = 1 } protocol pop3 { mail_max_userip_connections = 1 } remote 192.168.7.0/24/24 { ssl = yes } remote 192.168.7.0/27/27 { ssl = no } $

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IMAP flags and dovecot-keywords not working as expected
by Mark Foley 01 Aug '16

01 Aug '16

I've converted most of our users from Outlook to Thunderbird. One important feature of Thunderbird is that it pays attention to the IMAP non-standard message flags via the 'tags' feature (see http://wiki2.dovecot.org/MailboxFormat/Maildir) This is important because 2 users make extensive use of Outlook categories (Tags, in Thunderbird). I found that when I set a message to the 1st Tbird tag 0 (Important), the corresponding IMAP file got an 'a' suffix. Likewise, if I manually added an 'a' suffix to an IMAP file the corresponding tag was set displayed in Thunderbird. This made it easy for me to exports Outlook Categories and set IMAP messages flags accordingly. This worked perfectly on the user I was experimenting with (me). Recently, I converted one of these Outlook 'categories' users to Thunderbird. I added the appropriate flag letters to their IMAP messages, changed their tag names in Thunderbird, and created the following dovecot-keywords file as: 0 Board_and_Committee 1 Completed 2 Health_Care_meetings 3 Notifications 4 OSHP-DAS 5 personal_or_To_Do 6 Retirement_exits 7 $label5 8 Junk 9 $Forwarded 10 $MDNSent 11 $label2 However, none of the tags show up correctly in Thunderbird. If I manually set a message to have a tag of 0, the corresponding IMAP file gets a flag of 'm', not 'a' and the following is added to the dovecot-keywords files: 12 $label1 How can I fix this? Where is "$label1" text defined? Why did Thunderbird not snag the text for '0' from the dovecot-keywords file and give the IMAP file a tag of 'a'? My current theory is that the "Default" Thunderbird Tags corresponding to IMAP flags are not changeable and if new tags are create in Tbird, they get new flag letters. That would, of course, mean that if a user changes Thunderbird tag name, they would lose all tag settings on existing message. That doesn't seem right and I hope my theory is wrong. Any insight would be appreciated. --Mark

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POP3 & IMAP inbox setting for virtual
by Michael Fox 01 Aug '16

01 Aug '16

Posted Monday 7/25. Haven't seen a response. Trying again: --- This is a noobie question, so bear with me if it's not worded correctly: Primary Requirements: 1) I'd like to have two namespaces - one private/per-user, and one public (visible by all logged-in users). The public mailbox(s) would be used to distribute information to all users. 2) I'd like both POP3 and IMAP users to see both namespaces. As I understand it, this requires the use of the virtual plugin for POP3, in order to create a virtual namespace which would mix together the private and public namespaces into one mailbox. I have read: http://wiki.dovecot.org/Plugins/Virtual https://sys4.de/de/blog/2013/02/11/dovecot-virtual-setup-mit-globaler-sieve- spamfilter-regel-fur-pop3-nutzer/ (via Google translation) The example uses a CASE statement in the MySQL userdb query. As I understand it, this is done to set which namespace contains the inbox: the private namespace or the virtual namespace -- depending on if the user is connected via the imap or pop3 service, respectively. Question: how do I accomplish the same goal (setting the proper namespace for the inbox) when using a passwd-file style flat file userdb? Thanks, Michael

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self signed certs and dovecot imaps : howto? tlsv1 alert unknown ca
by hanasaki＠gmail.com 01 Aug '16

01 Aug '16

How do you setup dovecot to use a self signed cert? One server will be connected to the internet. One will be totally internal and have no runtime access to the internet. Getting the below error msg. Also, I think I have a TLS 1.0 and need a 1.2 cert?... Thank you. Jul 28 20:09:27 host dovecot: imap-login:: user=<>, rip=10...., lip=10...., TLS: SSL_read() failed: error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca: SSL alert number 48, session=<kK2aELspLpkKAQF5>

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