- dovecot - dovecot.org

[Dovecot] ldap authentication
by Daminto Lie 30 Aug '11

30 Aug '11

Hi, I have got Postfix, Dovecot IMAP and squirrelmail up and running on my ubuntu server 10.04 for a testing purpose. My question is in order to be able to login, do I need to create user accounts for each users on the server? I have about 20 users at the moment, and it's going to take time. I was thinking of using LDAP and have the dovecot authentication through LDAP. This way, I do not have to create accounts for 20 users on the server. The dovecot can just authenticate users by looking them up against the LDAP. I wonder if anyone would be able to share some guides as to how to set it up to work with Postfix and Dovecot. Thank you

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[Dovecot] dovecot w/ libwrap on fbsd
by Gelu Lupas 30 Aug '11

30 Aug '11

Dovecot with libwrap doesn't work on FreeBSD for some reason or another. I have these lines in my /etc/hosts.allow: ALL: LOCAL 127.0.0.1: allow pop3: ALL: allow ALL: ALL: deny Yet when you try to telnet to localhost, port 110 this is what happens: Aug 29 22:48:38 dodo dovecot: pop3-login: Error: connect(tcpwrap) failed: Permission denied I also tried auth_debug=yes to see what's wrong but it only shows the processes which handled the connection, no extra info with the reason why it failed. Here's the config: # 2.0.13: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 7.4-RELEASE i386 auth_mechanisms = plain login base_dir = /var/run/dovecot/ disable_plaintext_auth = no dotlock_use_excl = no first_valid_uid = 1000 listen = * login_access_sockets = tcpwrap login_greeting = login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c mail_location = mbox:~/Mail/:INBOX=/var/mail/%u mail_log_prefix = "%Us(%u): " mail_privileged_group = mail maildir_copy_with_hardlinks = no passdb { driver = pam } protocols = pop3 service auth { executable = /usr/local/libexec/dovecot/auth unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = root vsz_limit = 64 M } service imap-login { chroot = login client_limit = 128 process_limit = 32 process_min_avail = 3 service_count = 1 user = dovecot vsz_limit = 32 M } service imap { drop_priv_before_exec = no process_limit = 128 vsz_limit = 256 M } service pop3-login { chroot = login client_limit = 128 process_limit = 32 process_min_avail = 3 service_count = 1 user = dovecot vsz_limit = 32 M } service pop3 { drop_priv_before_exec = no process_limit = 128 vsz_limit = 256 M } service tcpwrap { unix_listener login/tcpwrap { group = $default_login_user mode = 0600 user = $default_login_user } } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_cipher_list = ALL:!LOW ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } verbose_proctitle = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } protocol lda { postmaster_address = postmaster(a)europrima.ro sendmail_path = /usr/sbin/sendmail }

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[Dovecot] : error while loading shared libraries: libdovecot.so.0 (arm cross compile)
by Stephen Feyrer 29 Aug '11

29 Aug '11

Hi. I've made a new attempt at build Dovecot. The build and then install processes appeared to work find. Then when I try to run Dovecot it reports the error: /share/MD0_DATA/optware/opt/sbin/dovecot: error while loading shared libraries: libdovecot.so.0: cannot open shared object file: No such file or directory To get a better idea of what's going on, I added --enable-devel-checks at ./configure and then ran gdb: # gdb --args dovecot -F GNU gdb 6.8 [snip] This GDB was configured as "arm-none-linux-gnueabi"... (no debugging symbols found) (gdb) run Starting program: /share/MD0_DATA/optware/opt/sbin/dovecot -F (no debugging symbols found) /share/MD0_DATA/optware/opt/sbin/dovecot: error while loading shared libraries: libdovecot.so.0: cannot open shared object file: No such file or directory Program exited with code 0177. (gdb) bt full No stack. (gdb) quit By the way on a separate but related note, adding --enable-maintiner-mode introduced a new problem also relating to libdovecot.so.0.0.0 I'll refer to that in the post script. # ls -alh /opt/lib/dovecot/ drwxr-xr-x 8 admin administ 4.0k Aug 27 16:31 ./ drwxr-xr-x 37 admin administ 16.0k Aug 27 16:27 ../ drwxr-xr-x 2 avahi avahi 4.0k Nov 26 2009 .debug/ drwxr-xr-x 2 admin administ 4.0k Aug 27 16:27 auth/ drwxr-xr-x 2 admin administ 4.0k Aug 27 16:31 doveadm/ -rw-r--r-- 1 admin administ 678 Aug 27 16:27 dovecot-config drwxr-xr-x 3 admin administ 4.0k Aug 26 18:01 imap/ drwxr-xr-x 2 admin administ 4.0k Aug 26 18:01 lda/ -rw-r--r-- 1 admin administ 527.6k Jan 6 2011 lib01_acl_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib01_acl_plugin.la* -rwxr-xr-x 1 admin administ 56.3k Aug 27 16:27 lib01_acl_plugin.so* -rw-r--r-- 1 admin administ 70.5k Jan 6 2011 lib02_imap_acl_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib02_imap_acl_plugin.la* -rwxr-xr-x 1 admin administ 13.1k Aug 27 16:27 lib02_imap_acl_plugin.so* -rw-r--r-- 1 admin administ 69.9k Jan 6 2011 lib02_lazy_expunge_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib02_lazy_expunge_plugin.la* -rwxr-xr-x 1 admin administ 13.0k Aug 27 16:27 lib02_lazy_expunge_plugin.so* -rw-r--r-- 1 admin administ 51.3k Jan 6 2011 lib05_snarf_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib05_snarf_plugin.la* -rwxr-xr-x 1 admin administ 7.4k Aug 27 16:27 lib05_snarf_plugin.so* -rw-r--r-- 1 admin administ 443.4k Jan 6 2011 lib10_quota_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib10_quota_plugin.la* -rwxr-xr-x 1 admin administ 51.5k Aug 27 16:27 lib10_quota_plugin.so* -rw-r--r-- 1 admin administ 23.6k Jan 6 2011 lib11_imap_quota_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib11_imap_quota_plugin.la* -rwxr-xr-x 1 admin administ 8.3k Aug 27 16:27 lib11_imap_quota_plugin.so* -rw-r--r-- 1 admin administ 56.9k Jan 6 2011 lib11_trash_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib11_trash_plugin.la* -rwxr-xr-x 1 admin administ 9.9k Aug 27 16:27 lib11_trash_plugin.so* -rw-r--r-- 1 admin administ 71.8k Jan 6 2011 lib15_notify_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib15_notify_plugin.la* -rwxr-xr-x 1 admin administ 10.6k Aug 27 16:27 lib15_notify_plugin.so* -rw-r--r-- 1 admin administ 14.4k Jan 6 2011 lib20_autocreate_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib20_autocreate_plugin.la* -rwxr-xr-x 1 admin administ 5.3k Aug 27 16:27 lib20_autocreate_plugin.so* -rw-r--r-- 1 avahi avahi 10.9k Nov 26 2009 lib20_convert_plugin.a -rw-r--r-- 1 admin administ 62.7k Jan 6 2011 lib20_expire_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib20_expire_plugin.la* -rwxr-xr-x 1 admin administ 10.6k Aug 27 16:27 lib20_expire_plugin.so* -rw-r--r-- 1 admin administ 161.0k Jan 6 2011 lib20_fts_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib20_fts_plugin.la* -rwxr-xr-x 1 admin administ 29.4k Aug 27 16:27 lib20_fts_plugin.so* -rw-r--r-- 1 admin administ 59.4k Jan 6 2011 lib20_listescape_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib20_listescape_plugin.la* -rwxr-xr-x 1 admin administ 9.4k Aug 27 16:27 lib20_listescape_plugin.so* -rw-r--r-- 1 admin administ 62.8k Jan 6 2011 lib20_mail_log_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib20_mail_log_plugin.la* -rwxr-xr-x 1 admin administ 10.1k Aug 27 16:27 lib20_mail_log_plugin.so* -rw-r--r-- 1 avahi avahi 54.4k Nov 6 2010 lib20_mbox_snarf_plugin.a -rw-r--r-- 1 admin administ 450.8k Jan 6 2011 lib20_virtual_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib20_virtual_plugin.la* -rwxr-xr-x 1 admin administ 47.6k Aug 27 16:27 lib20_virtual_plugin.so* -rw-r--r-- 1 admin administ 115.1k Jan 6 2011 lib20_zlib_plugin.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 lib20_zlib_plugin.la* -rwxr-xr-x 1 admin administ 18.4k Aug 27 16:27 lib20_zlib_plugin.so* -rw-r--r-- 1 admin administ 181.7k Jan 6 2011 lib21_fts_squat_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib21_fts_squat_plugin.la* -rwxr-xr-x 1 admin administ 48.8k Aug 27 16:27 lib21_fts_squat_plugin.so* -rw-r--r-- 1 admin administ 22.0k Jan 6 2011 lib30_imap_zlib_plugin.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 lib30_imap_zlib_plugin.la* -rwxr-xr-x 1 admin administ 6.5k Aug 27 16:27 lib30_imap_zlib_plugin.so* -rw-r--r-- 1 admin administ 101.3k Jan 6 2011 libdovecot-lda.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 libdovecot-lda.la* lrwxrwxrwx 1 admin administ 23 Aug 27 16:31 libdovecot-lda.so -> libdovecot-lda.so.0.0.0* lrwxrwxrwx 1 admin administ 23 Aug 27 16:31 libdovecot-lda.so.0 -> libdovecot-lda.so.0.0.0* -rwxr-xr-x 1 admin administ 35.2k Aug 27 16:27 libdovecot-lda.so.0.0.0* -rw-r--r-- 1 admin administ 241.7k Jan 6 2011 libdovecot-login.a -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 libdovecot-login.la* lrwxrwxrwx 1 admin administ 25 Aug 27 16:31 libdovecot-login.so -> libdovecot-login.so.0.0.0* lrwxrwxrwx 1 admin administ 25 Aug 27 16:31 libdovecot-login.so.0 -> libdovecot-login.so.0.0.0* -rwxr-xr-x 1 admin administ 65.5k Aug 27 16:27 libdovecot-login.so.0.0.0* -rwxr-xr-x 1 admin administ 1.0k Aug 27 16:27 libdovecot-sql.la* lrwxrwxrwx 1 admin administ 23 Aug 27 16:31 libdovecot-sql.so -> libdovecot-sql.so.0.0.0* lrwxrwxrwx 1 admin administ 23 Aug 27 16:31 libdovecot-sql.so.0 -> libdovecot-sql.so.0.0.0* -rwxr-xr-x 1 admin administ 19.3k Aug 27 16:27 libdovecot-sql.so.0.0.0* -rw-r--r-- 1 admin administ 6.2M Jan 6 2011 libdovecot-storage.a -rwxr-xr-x 1 admin administ 1.1k Aug 27 16:27 libdovecot-storage.la* lrwxrwxrwx 1 admin administ 27 Aug 27 16:31 libdovecot-storage.so -> libdovecot-storage.so.0.0.0* lrwxrwxrwx 1 admin administ 27 Aug 27 16:31 libdovecot-storage.so.0 -> libdovecot-storage.so.0.0.0* -rwxr-xr-x 1 admin administ 737.5k Aug 27 16:27 libdovecot-storage.so.0.0.0* -rw-r--r-- 1 admin administ 1.8M Jan 6 2011 libdovecot.a -rwxr-xr-x 1 admin administ 1011 Aug 27 16:27 libdovecot.la* lrwxrwxrwx 1 admin administ 19 Aug 27 16:31 libdovecot.so -> libdovecot.so.0.0.0* lrwxrwxrwx 1 admin administ 19 Aug 27 16:31 libdovecot.so.0 -> libdovecot.so.0.0.0* -rwxr-xr-x 1 admin administ 440.8k Aug 27 16:27 libdovecot.so.0.0.0* drwxr-xr-x 2 admin administ 4.0k Aug 26 18:01 pop3/ Everything seems to be in the right place. So I don't know what's wrong. Now on to my post script. This issue first appears when I try to package my freshly built Dovecot for installation on my arm powered nas. #make dovecot-ipk [...] test -z "/opt/include/dovecot" || /usr/bin/mkdir -p "~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/include/dovecot" /usr/bin/install -c -m 644 settings.h settings-parser.h '~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/include/dovecot' make[5]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src/lib-settings' make[4]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src/lib-settings' Making install in lib-dovecot make[4]: Entering directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src/lib-dovecot' make[5]: Entering directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src/lib-dovecot' test -z "/opt/lib/dovecot" || /usr/bin/mkdir -p "~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/lib/dovecot" /bin/sh ../../libtool --mode=install /usr/bin/install -c -s libdovecot.la '~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/lib/dovecot' libtool: install: /usr/bin/install -c .libs/libdovecot.so.0.0.0 ~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/lib/dovecot/libdovecot.so.0.0.0 libtool: install: strip --strip-unneeded ~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/lib/dovecot/libdovecot.so.0.0.0 strip: Unable to recognise the format of the input file `~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/lib/dovecot/libdovecot.so.0.0.0' make[5]: *** [install-pkglibLTLIBRARIES] Error 1 make[5]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src/lib-dovecot' make[4]: *** [install-am] Error 2 make[4]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src/lib-dovecot' make[3]: *** [install-recursive] Error 1 make[3]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot/src' make[2]: *** [install-recursive] Error 1 make[2]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot' make[1]: *** [install-strip] Error 2 make[1]: Leaving directory `~/Projects/nslu2/optware/tsx09/builds/dovecot' make: *** [~/Projects/nslu2/optware/tsx09/builds/dovecot_2.0.13-2_arm.ipk] Error 2 So I went looking for libdovecot.so.0.0.0 and found, ls -ahl ~/Projects/nslu2/optware/tsx09/builds/dovecot-2.0.13-ipk/opt/lib/dovecot/: total 1.3M drwxr-xr-x 2 leonidis leonidis 4.0K Aug 27 17:07 . drwxr-xr-x 3 leonidis leonidis 4.0K Aug 27 17:07 .. -rw-r--r-- 1 leonidis leonidis 678 Aug 27 17:07 dovecot-config -rwxr-xr-x 1 leonidis leonidis 1.3M Aug 27 17:07 libdovecot.so.0.0.0 The other libraries appear to have been built and are waiting to be packaged up but ipackage doesn't seem to get that far. What this says about ipackage and how it might relate to my first problem I don't know. I apologise this all seems a bit like a broken record to me. -- Kind regards Stephen Feyrer.

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Re: [Dovecot] File Permissions and delivery
by Timo Sirainen 29 Aug '11

29 Aug '11

On Fri, 2011-08-26 at 13:10 -0400, Simon Brereton wrote: > mail:~# ls /var/spool/mail/virtual/domain.net/simon/new/ > -rwxrwx--- 1 postfix mailsystem 2.5K Aug 26 03:33 1314326000.V801I1666018M803015.mail.net,S=2461:2, > -rwxrwx--- 1 postfix mailsystem 2.5K Aug 26 03:36 1314326209.V801I1666019M447273.mail.net,S=2460:2, > -rw-rw---- 1 postfix mailsystem 2.5K Aug 26 04:00 1314327630.V801I166601aM308173.mail.net,S=2477:2, > -rw------- 1 postfix mailsystem 2.5K Aug 26 04:22 1314328966.V801I166601bM756462.mail.net,S=2461:2, > -rw------- 1 postfix mailsystem 1.1K Aug 26 16:28 1314372534.V801I166601cM615258.mail.net,S=1097:2, > -rw------- 1 postfix mailsystem 1.1K Aug 26 16:31 1314372685.V801I166601dM264242.mail.net,S=1097:2, > > Mails are being delivered with 0600 permissions and not 0660 (the mails from courier seem to have all been 0770 as you can see). If I manually change the permission (to 0660) then I can see the mail in the MUA. If /var/spool/mail/virtual/domain.net/simon has 0770 permissions, the new mails should be delivered with 0660 permissions. (I don't remember if having g+s makes any difference in the directory like you have in the domain dir.) In any case, it would be better if mails were delivered as mailsystem:mailsystem 0600 since that's what you're reading them as. Unless you have some other good reason for requiring mailsystem group to be able to read them.

2 1

Re: [Dovecot] File Permissions and delivery
by Patrick Domack 29 Aug '11

29 Aug '11

My guess is your delivering email with postfix to the inbox, instead of using dovecot-lda. And something odd is going on with that postfix to get odd permissions like that. You probably needed to edit the postfix virtual deliever transport, or maybe you just forget to active the dovecot-lda (deliever) transport. Quoting Simon Brereton <simon.brereton(a)buongiorno.com>: > Hi > > I'm very new to Dovecot (been using Courier for 5 years), but I've > been persuaded of the merits of Dovecot and since the server needs > upgrading that seems like the perfect time/excuse. > > On a test server, I set up postfix and installed Dovecot (running > 32-bit Debian Squeeze, installed from apt-get). I mirrored the mail > store (Maildirs, for historical reasons located under > /var/spool/mail/virtual/domain.com/user). Then I ran the courier > migration perl script and everything was fine and dandy. > > However, when I can to do the production migration, things weren't > as smooth. The new server is 64-bit (not that I think it makes a > difference, but if you're going to help me you should have all the > information :) > > Again, I installed Postfix and Dovecot > Took down the old server > Mirrored the Maildirs > Ran the migration script > Restarted everything > > At this point everything looked like it was ok. Mail was being > received and delivered to the Maildirs and the IMAP login was fine. > However, I noticed errors in the logs when retreiving mail with the > MUA along the lines of: > > Aug 26 16:59:48 mail dovecot: IMAP(simon(a)lydiard.net): > open(/var/spool/mail/virtual/domain.net/simon/cur/1314328966.V801I166601bM7… failed: Permission denied (euid=999(mailsystem) egid=115(mailsystem) missing +r perm: > /var/spool/mail/virtual/domain.net/simon/cur/1314328966.V801I166601bM756462.mail.net,S=2461:2,) > > After messing around with the chown and chmod (even though these > were exactly the same as the test server) I finally discovered the > issue. > > mail:~# ls /var/spool/mail/virtual/domain.net/simon/new/ > -rwxrwx--- 1 postfix mailsystem 2.5K Aug 26 03:33 > 1314326000.V801I1666018M803015.mail.net,S=2461:2, > -rwxrwx--- 1 postfix mailsystem 2.5K Aug 26 03:36 > 1314326209.V801I1666019M447273.mail.net,S=2460:2, > -rw-rw---- 1 postfix mailsystem 2.5K Aug 26 04:00 > 1314327630.V801I166601aM308173.mail.net,S=2477:2, > -rw------- 1 postfix mailsystem 2.5K Aug 26 04:22 > 1314328966.V801I166601bM756462.mail.net,S=2461:2, > -rw------- 1 postfix mailsystem 1.1K Aug 26 16:28 > 1314372534.V801I166601cM615258.mail.net,S=1097:2, > -rw------- 1 postfix mailsystem 1.1K Aug 26 16:31 > 1314372685.V801I166601dM264242.mail.net,S=1097:2, > > Mails are being delivered with 0600 permissions and not 0660 (the > mails from courier seem to have all been 0770 as you can see). If I > manually change the permission (to 0660) then I can see the mail in > the MUA. > > After thinking for a while it occurred to me that this is covered in > the LDA section. But making changes to the config file (either > permissions or UID/GID) doesn't seem to make a difference. (Yes, I > did restart postfix and dovecot after the changes). > > Anyway, here is my dovecot -n: > > mail:~# dovecot -n > # 1.2.15: /etc/dovecot/dovecot.conf > # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.2 ext3 > log_timestamp: %Y-%m-%d %H:%M:%S > protocols: imap imaps pop3 pop3s > ssl_ca_file: /etc/ssl/keys/ca.crt > ssl_cert_file: /etc/ssl/keys/mail.net.crt > ssl_key_file: /etc/ssl/private/mail.net.key > disable_plaintext_auth: no > login_dir: /var/run/dovecot/login > login_executable(default): /usr/lib/dovecot/imap-login > login_executable(imap): /usr/lib/dovecot/imap-login > login_executable(pop3): /usr/lib/dovecot/pop3-login > mail_privileged_group: mailsystem > mail_location: maildir:/var/spool/mail/virtual/%d/%n > maildir_very_dirty_syncs: yes > mbox_write_locks: fcntl dotlock > mail_executable(default): /usr/lib/dovecot/imap > mail_executable(imap): /usr/lib/dovecot/imap > mail_executable(pop3): /usr/lib/dovecot/pop3 > mail_plugins(default): quota imap_quota > mail_plugins(imap): quota imap_quota > mail_plugins(pop3): quota > mail_plugin_dir(default): /usr/lib/dovecot/modules/imap > mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap > mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 > imap_client_workarounds(default): outlook-idle delay-newmail > imap_client_workarounds(imap): outlook-idle delay-newmail > imap_client_workarounds(pop3): > pop3_client_workarounds(default): > pop3_client_workarounds(imap): > pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh > lda: > postmaster_address: postmaster@net > mail_plugins: quota > log_path: > info_log_path: > deliver_log_format: msgid=%m: %f: %$ > auth default: > mechanisms: plain login > user: mailsystem > verbose: yes > passdb: > driver: sql > args: /etc/dovecot/dovecot-sql.conf > userdb: > driver: prefetch > userdb: > driver: static > args: uid=999 gid=115 home=/var/spool/mail/virtual/%d/%n > allow_all_users=yes > socket: > type: listen > client: > path: /var/spool/postfix/private/auth > mode: 432 > user: postfix > group: mailsystem > master: > path: /var/run/dovecot/auth-master > mode: 432 > user: mailsystem > group: mailsystem > plugin: > quota: maildir > > As you can see, I tried to go 0660 in both client and master. > > The portion of my master.cf > 81 # SPB - Attempt to deliver with Dovecot LDA > 82 dovecot unix - n n - - pipe > 83 flags=DRhu user=mailsystem argv=/usr/lib/dovecot/deliver -f > ${sender} -d ${user}@${nexthop} > > Is there anything else I should include? > > I'm pretty sure it's an error on my part. I'm just not clued up > enough to know where. > > My second problem is that I thought I had things back to where they > were before I messed with chown and chmod, but now I get this in the > logs > > dovecot: dovecot: Fatal: > chdir(/var/spool/mail/virtual/domain.net/simon//) failed: Permission > denied (euid=999(mailsystem) egid=115(mailsystem) missing +x perm: > /var/spool/mail/virtual) > > But the ls on that is exactly the same as on the test server: > ls /var/spool/mail/virtual/ > total 44K > drwxrwS--- 11 postfix mailsystem 4.0K Aug 25 23:07 ./ > drwxrwsr-x 5 amavis mailsystem 4.0K Oct 19 2009 ../ > drwxrws--- 5 mailsystem mailsystem 4.0K Aug 26 02:33 domain.net/ > > So, now I'm stumped. I hope someone can spot the simple thing I've missed! > > Thanks. > > > Simon

2 3

[Dovecot] limiting number of incorrect logins per connection
by Alex 29 Aug '11

29 Aug '11

Hi Guys, Running Dovecot 2 on my server. It is regularly getting dictionary auth attacked. What I have noticed is that once connected to a pop3/imap login session, you can send endless incorrect usernames+passwords attempts. This is a problem for me... I use fail2ban to try and stop these script kiddies. The problem is that fail2ban detects the bad auths, firewalls the IP, however, since it's an "established" session, the attacker can keep authing away... It's only on a subsequent (new) connection that the firewalling will take effect. Why is there no configuration option such as "max auth attempts per connection"? This would be useful, so once the limit is reached, the connection is dropped. is there a patch/workaround?

7 11

Re: [Dovecot] Catch22: user needs space to fix out of space condition
by Joseph Tam 29 Aug '11

29 Aug '11

Thanks to all who've made suggestions. It seems removing dotlocks as a locking method is the way to go. There is another dotlock locking variant mentioned in 10-mail.conf that seems to address this situation for those that can't get away from dotlocks: # dotlock_try: Same as dotlock, but if it fails because of permissions or # because there isn't enough disk space, just skip it. mbox_write_locks = dotlock_try fcntl Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] v2.0.14 released
by Timo Sirainen 29 Aug '11

29 Aug '11

http://dovecot.org/releases/2.0/dovecot-2.0.14.tar.gz http://dovecot.org/releases/2.0/dovecot-2.0.14.tar.gz.sig It's been a while since the previous release.. I've been a bit busy with my newly created Dovecot support company, but it was also summer and I wasted some time doing nothing useful. :) Most of my recent time has gone to adding new features to v2.1 branch. I'm planning on releasing v2.1.alpha1 somewhat soon and the final v2.1.0 sometimes later this year. This v2.0.14 release also contains one larger new feature: Ability to list and kick imap/pop3 proxy connections. This is done via a new "ipc" process where all proxying login processes connect to, which allows doveadm to communicate with them. If you're not using these features, this change (and its potential bugs) should be pretty much invisible. BTW. I know there are still mails I haven't read & replied to. I'll try to get to them eventually, but you may as well re-send anything you want me to read sooner rather than 6 months from now. Some of the largest changes since v2.0.13: + doveadm: Added support for running mail commands by proxying to another doveadm server. + Added "doveadm proxy list" and "doveadm proxy kick" commands to list/kick proxy connections (via a new "ipc" service). + Added "doveadm director move" to assign user from one server to another, killing any existing connections. + Added "doveadm director ring status" command. + userdb extra fields can now return name+=value to append to an existing name, e.g. "mail_plugins+= quota". - script-login attempted an unnecessary config lookup, which usually failed with "Permission denied". - lmtp: Fixed parsing quoted strings with spaces as local-part for MAIL FROM and RCPT TO. - imap: FETCH BODY[HEADER.FIELDS (..)] may have crashed or not returned all data sometimes. - ldap: Fixed random assert-crashing with with sasl_bind=yes. - Fixes to handling mail chroots - Fixed renaming mailboxes under different parent with FS layout when using separate ALT, INDEX or CONTROL paths. - zlib: Fixed reading concatenated .gz files.

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[Dovecot] unlink_directory failed with 'Device or resource busy' on NFS
by 김기태 29 Aug '11

29 Aug '11

Hi, I'm getting some errors while I'm trying to move mailboxes from IMAP server to Outlook client. The error message is "IMAP command is failed" and I think it is useless. Here are the error messages written to server's syslog. imap(name(a)domain.com<mailto:name@domain.com>): Error: unlink_directory(/data/domain.com/name/INBOX/direct/.nfs00000000000033fd000… failed: Device or resource busy imap(name(a)domain.com<mailto:name@domain.com>): Error: unlink_directory(/data/domain.com/name/INBOX/IDC/.nfs000000000000709d000000… failed: Device or resource busy imap(name(a)domain.com<mailto:name@domain.com>): Error: unlink_directory(/data/domain.com/name/INBOX/OSSEC/.nfs000000000000709f0000… failed: Device or resource busy How can I solve this problem? I'm using Dovecot 2.0.13 and my configurations are: # 2.0.13: /usr/local/dovecot/etc/dovecot/dovecot.conf # OS: Linux 2.6.38-11-server x86_64 Ubuntu 11.04 listen = * mail_fsync = always mail_location = maildir:~:LAYOUT=fs mail_nfs_index = yes mail_nfs_storage = yes mmap_disable = yes passdb { args = /usr/local/dovecot/etc/dovecot/dovecot-ldap.conf.ext driver = ldap } ssl_cert = </etc/postfix/tls/smtpd.cert ssl_key = </etc/postfix/tls/smtpd.key userdb { args = uid=65534 gid=65534 home=/data/%Ld/%Ln driver = static }

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[Dovecot] Pop3 hanging up after login.
by Fabio Catunda 29 Aug '11

29 Aug '11

Hi, I'm trying to implement a second dovecot server on a second machine to try to load balance IMAP/POP3 services. The first machine is already running and is working pretty well with dovecot-pop3d 1:1.0.15-2.3+lenny1. The new machine is running dovecot-pop3d 1:1.2.15-7 and accessing the existing maildirs over a NFS share on /mnt/mail. When I try to telnet localhost 110 on the new machine it just freezes after the "pass MySecret", like this: # telnet localhost 110 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. +OK Bem Vindo. user my.user(a)mydomain.com.br +OK pass MySecret ... (Nothing else happens) If I try to stop Dovecot with /etc/init.d/dovecot stop it stops, but the pop3 process keep running and the only way to stop it is with kill -9. On my log I only can see this: Aug 27 15:03:40 radamante dovecot: auth(default): client in: AUTH#0112#011PLAIN#011service=pop3#011secured#011lip=127.0.0.1#011rip=127.0.0.1#011lport=110#011rport=60421#011resp=<hidden> Aug 27 15:03:40 radamante dovecot: auth-worker(default): pam(my.user(a)mydomain.com.br,127.0.0.1): lookup service=dovecot Aug 27 15:03:40 radamante dovecot: auth-worker(default): pam(my.user(a)mydomain.com.br,127.0.0.1): #1/1 style=1 msg=Password: Aug 27 15:03:42 radamante dovecot: auth-worker(default): pam(my.user(a)mydomain.com.br,127.0.0.1): pam_authenticate() failed: Authentication failure (password mismatch?) Aug 27 15:03:42 radamante dovecot: auth(default): cache(my.user(a)mydomain.com.br,127.0.0.1): miss Aug 27 15:03:42 radamante dovecot: auth(default): ldap(my.user(a)mydomain.com.br,127.0.0.1): pass search: base=ou=Users, dc=mydomain, dc=com, dc=br scope=subtree filter=(&(mail=my.user(a)mydomain.com.br)) fields=mail,userPassword Aug 27 15:03:42 radamante dovecot: auth(default): ldap(my.user(a)mydomain.com.br,127.0.0.1): result: mail(user@domain)=my.user@mydomain.com.br userPassword(password)=<hidden> Aug 27 15:03:42 radamante dovecot: auth(default): client out: OK#0112#011user=my.user@mydomain.com.br#011user@domain=my.user@mydomain.com.br Aug 27 15:03:42 radamante dovecot: auth(default): master in: REQUEST#0111#01130330#0112 Aug 27 15:03:42 radamante dovecot: auth(default): passwd(my.user(a)mydomain.com.br,127.0.0.1): lookup Aug 27 15:03:42 radamante dovecot: auth(default): passwd(my.user(a)mydomain.com.br,127.0.0.1): unknown user Aug 27 15:03:42 radamante dovecot: auth(default): ldap(my.user(a)mydomain.com.br,127.0.0.1): user search: base=ou=Users, dc=mydomain, dc=com, dc=br scope=subtree filter=(&(mail=my.user(a)mydomain.com.br)) fields=homeDirectory,uidNumber,gidNumber Aug 27 15:03:42 radamante dovecot: auth(default): ldap(my.user(a)mydomain.com.br,127.0.0.1): result: uidNumber(uidNumber)=3478 gidNumber(gidNumber)=513 homeDirectory(homeDirectory)=/home/samba/my.user Aug 27 15:03:42 radamante dovecot: auth(default): master out: USER#0111#011my.user@mydomain.com.br#011uidNumber=3478#011gidNumber=513#011homeDirectory=/home/samba/my.user Aug 27 15:03:42 radamante dovecot: pop3-login: Login: user=<my.user(a)mydomain.com.br>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured Aug 27 15:03:42 radamante dovecot: auth(default): new auth connection: pid=30330 Aug 27 15:03:42 radamante dovecot: POP3(my.user(a)mydomain.com.br): Effective uid=8, gid=8, home=(none) Aug 27 15:03:42 radamante dovecot: POP3(my.user(a)mydomain.com.br): maildir: data=/mnt/mail/mydomain.com.br/my.user/Maildir Aug 27 15:03:42 radamante dovecot: POP3(my.user(a)mydomain.com.br): maildir++: root=/mnt/mail/mydomain.com.br/my.user/Maildir, index=, control=, inbox=/mnt/mail/mydomain.com.br/my.user/Maildir Aug 27 15:03:42 radamante dovecot: POP3(my.user(a)mydomain.com.br): Namespace : Using permissions from /mnt/mail/mydomain.com.br/my.user/Maildir: mode=0700 gid=-1 By now I have no clue whats going on, any help is appreciated. I don't understand if the problem is the NFS share or if it's something with the new version of Dovecot on Debian. Some more info: # dovecot -n # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.2 nfs log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap pop3 ssl: no disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login login_greeting: Bem Vindo. login_process_per_connection: no login_chroot: no login_process_size: 128 login_processes_count: 8 max_mail_processes: 2048 mail_max_userip_connections(default): 100 mail_max_userip_connections(imap): 100 mail_max_userip_connections(pop3): 10 verbose_proctitle: yes first_valid_uid: 1 last_valid_uid: 9999 last_valid_gid: 9999 mail_privileged_group: mail mail_uid: mail mail_gid: mail mail_location: maildir:/mnt/mail/%Ld/%Ln/Maildir mail_debug: yes mmap_disable: yes mail_nfs_storage: yes mail_nfs_index: yes maildir_copy_preserve_filename: yes mbox_write_locks: fcntl dotlock mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_process_size: 512 mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 imap_client_workarounds(default): delay-newmail imap_client_workarounds(imap): delay-newmail imap_client_workarounds(pop3): imap_idle_notify_interval(default): 30 imap_idle_notify_interval(imap): 30 imap_idle_notify_interval(pop3): 120 pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: default_realm: mydomain.com.br cache_size: 1024 cache_negative_ttl: 0 username_format: %Lu failure_delay: 3 debug: yes passdb: driver: pam passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: passwd userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf root@radamante:/etc/dovecot# egrep -v '^#|^$' dovecot-ldap.conf hosts = 192.168.5.37 192.168.5.124 sasl_bind = no tls = no auth_bind = no ldap_version = 3 base = ou=Users, dc=mydomain, dc=com, dc=br deref = never scope = subtree user_attrs = homeDirectory=homeDirectory,uidNumber=uidNumber,gidNumber=gidNumber user_filter = (&(mail=%u)) pass_attrs = mail=user@domain,userPassword=password pass_filter = (&(mail=%u)) default_pass_scheme = CRYPT Thanks in advance.

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