October 2013 - dovecot

[Dovecot] secure email server
by BONNET, Frank 23 Oct '13

23 Oct '13

Hello I have to setup a "secured" email server - encrypted filesystem - SSL or TLS only for SMTP and IMAPS - Talking only to some known other same-secured servers Any info/links welcome ! Please do not start some flame war around this ! I've been ordered to set up such server and I KNOW there are probably security holes but nothing's perfect so a starting point is necessary *Thank you for any infos*

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[Dovecot] Odd Feature Request - RBL blacklist lookup to prevent authentication
by Marc Perkel 23 Oct '13

23 Oct '13

I would like to have a list of IPs (hacker list) that I can do a lookup on so that if anyone tries to authenticate to dovecot they always fail if they are on my list. I have the list - and the list is available as a DNS blacklist. I'd like to have it work with both local IP lists or RBL lookup. The idea is so hackers from known IP addresses never succeed. If Dovecot provides the feature I have about 1/2 million IP addresses of known current hackers to block. Anyone else interested in this?

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[Dovecot] fstat() errors on /srv/mail/<username>/dovecot.index.log
by Zach La Celle 23 Oct '13

23 Oct '13

Dovecot version 2.1.7 Ubuntu 12.04.3 LTS Kernel 3.2.0-35-generic x86_64 I'm not sure exactly when this started occurring, but sporatically users report issues receiving email, having email saved to "Sent," etc. Looking in dovecot.log, I see the following errors: 2013-10-16 09:53:20 imap-login: Info: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27434, secured, session=<PnoiBtzoBgB/AAAB> 2013-10-16 09:53:20 imap(user1): Info: Disconnected: Logged out in=93 out=846 2013-10-16 09:53:21 imap(user2): Info: Disconnected: Logged out in=3616 out=495 2013-10-16 09:53:24 imap-login: Info: Login: user=<user3>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27436, secured, session=<jE5kBtzoBwB/AAAB> 2013-10-16 09:53:24 imap(user3): Info: Disconnected: Logged out in=93 out=819 2013-10-16 09:53:33 imap(user4): Error: fstat() failed with file /srv/mail/user4/dovecot.index.log: No such file or directory 2013-10-16 09:53:33 imap(user4): Error: fstat() failed with file /srv/mail/user4/dovecot.index.log: No such file or directory 2013-10-16 09:53:33 imap(user4): Error: fstat() failed with file /srv/mail/user4/dovecot.index.log: No such file or directory 2013-10-16 09:53:33 imap(user4): Error: fstat() failed with file /srv/mail/user4/dovecot.index.log: No such file or directory 2013-10-16 09:53:33 imap(user4): Error: fstat() failed with file /srv/mail/user4/dovecot.index.log: No such file or directory 2013-10-16 09:53:33 imap(user4): Error: fstat() failed with file /srv/mail/user4/dovecot.index.log: No such file or directory 2013-10-16 09:53:41 imap-login: Info: Login: user=<user3>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27438, secured, session=<UDJlB9zoCAB/AAAB> 2013-10-16 09:53:41 imap(user3): Info: Disconnected: Logged out in=93 out=819 2013-10-16 09:54:12 imap-login: Info: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27440, secured, session=<6bI5CdzoCQB/AAAB> 2013-10-16 09:54:12 imap(user1): Info: Disconnected: Logged out in=93 out=846 2013-10-16 09:54:12 imap(user5): Info: Disconnected: Logged out in=736 out=7064 2013-10-16 09:54:15 imap-login: Info: Login: user=<user6>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27442, secured, session=<t+FnCdzoCgB/AAAB> 2013-10-16 09:54:15 imap(user6): Info: Disconnected: Logged out in=95 out=902 2013-10-16 09:54:20 imap-login: Info: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27444, secured, session=<c/q1CdzoCwB/AAAB> 2013-10-16 09:54:20 imap(user1): Info: Disconnected: Logged out in=93 out=846 2013-10-16 09:54:24 imap-login: Info: Login: user=<user3>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=27446, secured, session=<nOb3CdzoDAB/AAAB> 2013-10-16 09:54:24 imap(user3): Info: Disconnected: Logged out in=93 out=819 These errors are not confined to a single user, and do not occur with the same frequency. I originally was running the Dovecot shipped with the default Ubuntu repositories (don't remember which version, but it was 1.*) and used a backport to upgrade to 2.1.7 to see if that fixed it. It did not. Any ideas why this is happening?

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[Dovecot] doveadm: Fatal: open(/dev/tty)
by Dan Langille 22 Oct '13

22 Oct '13

I received this message today, and remembered, you can't do that... $ doveadm pw -s SHA512-CRYPT Enter new password: doveadm(dan): Fatal: open(/dev/tty) failed: No such file or directory </pre> It seems if you have no tty, you can't create a password. Surely there is a better way to do this? Looking at the code, it's trying to open the tty and turn off echo. For the record: FreeBSD 8.4-RELEASE-p3 And yes, there is no console. I'm attached to a FreeBSD jail from the host system, directly via the ezjail-admin console command. # w 6:52PM up 18 days, 23:34, 0 users, load averages: 0.96, 0.57, 0.46 USER TTY FROM LOGIN@ IDLE WHAT # Ain't nobody there.. -- Dan Langille - http://langille.org/

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[Dovecot] using dovecot in Asterisk imap storage
by Asmaa Ahmed 22 Oct '13

22 Oct '13

Hello, I am trying to use postfix/dovecot as mail server to be the imap storage for my voicemail system.For that I installed postfix and dovecot and trying to follow the instructions in this post http://etel.wiki.oreilly.com/wiki/index.php?title=Storing_Voicemail_on_an_I… I should add a master user for Asterisk to your IMAP server that has access to all user's mailboxes and as per the instructions, I should edit auth section in dovecot.conf which I can't find! Is there something wrong or should I add this section by myselfAlso I don't have dovecot.masterusers, should I create it? $/etc/dovecot$ /usr/sbin/dovecot -n# 2.0.19: /etc/dovecot/dovecot.conf# OS: Linux 3.2.0-31-virtual x86_64 Ubuntu 12.04.3 LTS mail_location = maildir:~/Maildirmanagesieve_notify_capability = mailtomanagesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihavepassdb { driver = pam}plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve}protocols = imap pop3 sieveservice auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix }}ssl_cert = </etc/ssl/certs/dovecot.pemssl_cipher_list = ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUMssl_key = </etc/ssl/private/dovecot.pemuserdb { driver = passwd}protocol imap { imap_client_workarounds = delay-newmail mail_max_userip_connections = 10}protocol pop3 { mail_max_userip_connections = 10 pop3_client_workarounds = outlook-no-nuls oe-ns-eoh}protocol lda { deliver_log_format = msgid=%m: %$ mail_plugins = sieve postmaster_address = postmaster quota_full_tempfail = yes rejection_reason = Your message to <%t> was automatically rejected:%n%r} Thanks.

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[Dovecot] Dbox group file permissions
by Chris Lasater 22 Oct '13

22 Oct '13

Hi everyone, I feel like I am missing something obvious here. I have dovecot up and running and every piece of mail is given user read/write permission. I see the option mail_gid, but I do not see anyplace to set the group permissions. I see the below wiki talking about new home directories getting their permission from the parent directory, but this does not seem to work. Any assistance would be appreciated. http://wiki2.dovecot.org/SharedMailboxes/Permissions I changed the group permissions on the parent directory, and used rm -rf to delete the user directories, then logged in again so it was recreated. [user@dovecot ~]$ sudo ls -la /mnt/home/imapd/domain.example.net/ total 24 drwxr-x--- 6 imapd imapd 4096 Oct 21 17:35 . drwxr-xr-x 46 imapd nagios 4096 Oct 21 16:55 .. drwx------ 3 imapd imapd 4096 Oct 21 16:59 user1 drwx------ 3 imapd imapd 4096 Oct 21 17:35 user2 Setup Mail is written in dbox format CentOS 5.9 dovecot 2.2.6 NFS with director Mail Configs mail_home = /mnt/home/imapd/%d/%n mail_location = dbox:/mnt/home/imapd/%d/%n mail_uid = imapd mail_gid = imapd Thanks, Chris

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[Dovecot] Mailboxes separated from IMAP server
by Reymer Antonio Vargas Solano 21 Oct '13

21 Oct '13

Hello folks, At my university we are trying to implement a distributed email backend, but I have some troubles, The topology: Server A: Postfix+LMTP # MTA Server B: Dovecot+LMTP # Just mailboxes Server C: Dovecot # POP3/IMAP Right now the Server A can leave a received email to the Server B, but I don't know how to communicate Server C to the Server B to retrieve the emails. I think that we should use IMAP protocol, but I am confused about how to connect them, I don't know if we have to use a proxy IMAP server, or another thing. Can anyone give me an idea? Regards, Reymer Antonio Vargas Solano

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[Dovecot] dovecot dropbox plugin created another problem ?
by Benny Pedersen 21 Oct '13

21 Oct '13

http://blog.dynamoo.com/2013/10/dropbox-spam-leads-to-malware-on-errr.html

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[Dovecot] bangkokmaco@gmail.com has indicated you're a friend. Accept?
by bangkokmaco＠gmail.com 21 Oct '13

21 Oct '13

Hi, bangkokmaco(a)gmail.com wants to follow you. ****** Is bangkokmaco(a)gmail.com you friend? ****** If Yes please follow the link below: http://invites.fliporamail.com/signup_e.html?fullname=Dovecot+Mailing+List&… If No please follow the link below: http://invites.fliporamail.com/signup_e_no.html?fullname=Dovecot+Mailing+Li… Follow the link below to remove yourself from all such emails http://invites.fliporamail.com/uns.jsp?email=dovecot@dovecot.org&iid=3fa84c…

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[Dovecot] Upgrade from 2.1 to 2.2 on Debian
by Lucas Rothamel - Eye Catching Webdesign 21 Oct '13

21 Oct '13

Hello, I am currently running Dovecot 2.1 on current Debian and need to upgrade to 2.2 to use the replication features. I understand that I therefore need to compile Dovecot myself. I am using a MySQL database for users authentication, therefore I need to compile Dovecot with mysql support: *./configure --with-mysql* Unfortunately this terminates with: *configure: error: Can't build with MySQL support: libmysqlclient not found* I installed libmysqlclient from debian repos, but it does not help. Also, how do I then connect the newly installed dovecot to my existing /etc/init.d/dovecot script? Thank you. Lucas -- Lucas Rothamel Eye Catching Webdesign info(a)eye-catching-webdesign.de - www.eye-catching-webdesign.de You know, we go to the gym to keep the body fit. Similarly the mind needs some rest. The mind is bombarded with so many impressions. Our mind has been bombarded by impressions the whole time. It needs a different kind of rest other than sleep. And meditation is such a rest. It calms the mind. energizes the spirit and makes the body more strong and vibrant. improves the immune system. The immune cells, the T-cell count go higher through Sudarshan Kriya and meditation. And you feel so nice inside. - Sri Sri Ravi Shankar I love deadlines. I like the whooshing sound they make as they fly by. -- Douglas Adams

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