- dovecot - dovecot.org

[Dovecot] Log imap commands
by forumer＠smartmobili.com 11 Jan '12

11 Jan '12

Hi, I am trying to optimize an imap library and I am comparing with some existing webmail, for instance from roundcube I can log the imap commands with the following format : [11-Jan-2012 14:22:55 +0100]: [DBD1] S: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Dovecot ready. [11-Jan-2012 14:22:55 +0100]: [DBD1] C: A0001 ID ("name" "Roundcube Webmail" "version" "0.6" "php" "5.3.5-1ubuntu7.4" "os" "Linux" "command" "/") [11-Jan-2012 14:22:55 +0100]: [DBD1] S: * ID NIL [11-Jan-2012 14:22:55 +0100]: [DBD1] S: A0001 OK ID completed. [11-Jan-2012 14:22:55 +0100]: [DBD1] C: A0002 AUTHENTICATE CRAM-MD5 [11-Jan-2012 14:22:55 +0100]: [DBD1] S: + RDM1MTE1NjkxOTQzODE4NDEuMTMyNjI4ODE3NUBzZC0zMDYzNT4= [11-Jan-2012 14:22:55 +0100]: [DBD1] C: d2ViZ3Vlc3RAc21hcnRtb2JpbGkuY29tIDczODMxNjUzZmVlYzdjNDVlNzRkYTg1YjIwMjk2NWM0 [11-Jan-2012 14:22:55 +0100]: [DBD1] S: A0002 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS FUZZY] Logged in [11-Jan-2012 14:22:55 +0100]: [DBD1] C: A0003 NAMESPACE [11-Jan-2012 14:22:55 +0100]: [DBD1] S: * NAMESPACE (("" ".")) NIL NIL [11-Jan-2012 14:22:55 +0100]: [DBD1] S: A0003 OK Namespace completed. [11-Jan-2012 14:22:55 +0100]: [DBD1] C: A0004 LOGOUT [11-Jan-2012 14:22:55 +0100]: [DBD1] S: * BYE Logging out ... And now I would like to do the same from my imap library so I have started wireshark but it's a bit messy and difficult to compare. I was wondering if dovecot allows to log imap communications ? Thanks

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[Dovecot] How to solve a "Connection queue full problem" - dovecot version 2.0.16
by Didier Gervaise 11 Jan '12

11 Jan '12

Hello, I put in production dovecot yesterday. After an hour, nobody could log in ("Max number of imap connection" error message on Thunderbird) Afterward, I found these messages in the logs: Jan 10 09:21:20 mailsrv dovecot: [ID 583609 mail.info] imap-login: Disconnected: Connection queue full (no auth attempts): rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx In the panic, I changed these values in /usr/local/etc/dovecot/conf.d/10-master.conf default_process_limit = 20000 default_client_limit = 20000 This apparently solved the problem but now I have these messages when I start dovecot: Jan 11 14:41:08 mailsrvspare dovecot: [ID 583609 mail.info] master: Dovecot v2.0.15 starting up Jan 11 14:41:08 mailsrvspare dovecot: [ID 583609 mail.warning] config: Warning: service auth { client_limit=4096 } is lower than required under max. load (103024) Jan 11 14:41:08 mailsrvspare dovecot: [ID 583609 mail.warning] config: Warning: service anvil { client_limit=20000 } is lower than required under max. load (60003) What should I do ? - adding "service_count = 0" in service imap-login { ... } and removing the modifications I did in 10-master.conf ? or - should I configure differently default_process_limit and default_client_limit ? It is a small site (about 1000 users). Currently I have 666 imap processes and 136 imap-login processes. Additionnal infos: The Server is a Solaris 10 Sun X4540 32GB RAM mailsrv:~ % /usr/local/sbin/dovecot -n # 2.0.16: /usr/local/etc/dovecot/dovecot.conf doveconf: Warning: service auth { client_limit=4096 } is lower than required under max. load (103024) doveconf: Warning: service anvil { client_limit=20000 } is lower than required under max. load (60003) # OS: SunOS 5.10 i86pc default_client_limit = 20000 default_process_limit = 20000 disable_plaintext_auth = no first_valid_uid = 100 mail_debug = yes mail_plugins = " quota" mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave passdb { driver = pam } plugin { quota = maildir:User quota quota_rule = ?:storage=4G quota_rule2 = Trash:storage=+100M quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=90%% quota-warning 90 %u quota_warning3 = storage=80%% quota-warning 80 %u sieve = ~/.dovecot.sieve sieve_dir = ~/ } postmaster_address = postmaster(a)esrf.fr protocols = imap pop3 lmtp sieve service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 } } service imap { process_limit = 2000 } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { user = dovecot } user = dovecot } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } protocol lda { mail_plugins = " sieve" } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = " quota imap_quota" } Best Regards -- ________________________________________________________ Didier GERVAISE didier.gervaise(a)esrf.fr 04 76 88 27 28 System Administrator ---- Computing Services ESRF 6 rue Jules Horowitz 38043 Grenoble Cedex 09 ________________________________________________________

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[Dovecot] Providing shared folders with multiple backend servers
by Sven Hartge 11 Jan '12

11 Jan '12

Hi *, I am currently in the planning stage for a "new and improved" mail system at my university. Right now, everything is on one big backend server but this is causing me increasing amounts of pain, beginning with the time a full backup takes. So naturally, I want to split this big server into smaller ones. To keep things simple, I want to pin a user to a server so I can avoid things like NFS or cluster aware filesystems. The mapping for each account is then inserted into the LDAP object for each user and the frontend proxy (perdition at the moment) then uses this information to route each access to the correct backend storage server running dovecot. So far this has been working nice with my test setup. But: I also have to provide shared folders for users. Thankfully users don't have the right to share their own folders, which makes things easier (I hope). Right now, the setup works like this, using Courier: - complete virtual mail setup - global shared folders configured in /etc/courier/shared/index - inside /home/shared-folder-name/Maildir/courierimapacl specific user get access to a folder - each folder a user has access is mapped to the namespace #shared like #shared.shared-folder-name Now, if I split my backend storage server into multiple ones and user-A is on server-1 and user-B is on server-2, but both need to access the same shared folder, I have a problem. I could of course move all users needing access to a shared folder to the same server, but in the end, this will be a nightmare for me, because I forsee having to move users around on a daily basis. Right now, I am pondering with using an additional server with just the shared folders on it and using NFS (or a cluster FS) to mount the shared folder filesystem to each backend storage server, so each user has potential access to a shared folders data. Ideas? Suggestions? Nudges in the right direction? Grüße, Sven. -- Sigmentation fault. Core dumped.

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[Dovecot] Dovecot under Virtual Host environment??
by sparkietm 10 Jan '12

10 Jan '12

Hi all, Could anyone point me to a walk-through of setting up Dovecot for multiple domains under a Virtual Host environment? I'd like to offer clients their own email domain for each virtual host e.g john(a)client_1.com, sue(a)client_2.com. I'm guessing this is fairly common set-up, but a search on "multiple domains" didn't bring much back. Also, would it be possible to offer each client webmail? Many thanks in advance Mark -- View this message in context: http://old.nabble.com/Dovecot-under-Virtual-Host-environment---tp33114381p3… Sent from the Dovecot mailing list archive at Nabble.com.

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[Dovecot] dsync panic
by Jürgen Obermann 10 Jan '12

10 Jan '12

Hello, when I try to convert from mbox to mdbox with dsync with one user it always panics: # /opt/local/bin/dsync -v -u userxy backup ssh root@minerva1 /opt/local/bin/dsync -v -u userxy dsync-local(userxy): Info: Papierkorb: uidnext changed: 161 != 1 dsync-local(userxy): Info: INBOX: uidnext changed: 9139 != 9105 dsync-local(userxy): Info: Trash: uidnext changed: 3924 != 3915 dsync-local(userxy): Info: Drafts: uidnext changed: 1563 != 1 dsync-local(userxy): Info: Gesendet: uidnext changed: 369 != 1 dsync-local(userxy): Info: Sent: uidnext changed: 1955 != 1 dsync-remote(userxy): Panic: Trying to allocate 2147483648 bytes dsync-remote(userxy): Error: Raw backtrace: 0xff14bc30 -> 0xff1658c0 -> 0xff15744c -> 0xff157520 -> 0xff159d90 -> 0xff156540 -> 0xff15cf5c -> 0xff156540 -> 0xff157100 -> 0xff16d158 -> 0xff16cfe8 -> 0xff26e350 -> 0x251c4 -> 0x2547c -> 0x21110 -> 0x20494 -> 0x1f230 -> 0x1f3d4 -> 0xff15e46c -> 0xff15f738 -> 0xff15e530 -> 0xff140ec8 -> 0x1525c -> 0x14608 Abort dsync-local(userxy): Error: read() from worker server failed: EOF dsync-local(userxy): Error: Unexpected reply from server: My local configuration is: # /opt/local/bin/doveconf -n # 2.0.16: /opt/local/etc/dovecot/dovecot.conf # OS: SunOS 5.10 sun4v auth_verbose = yes disable_plaintext_auth = no lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = imap.hrz.uni-giessen.de localhost mail_fsync = always mail_location = mbox:~/Mail:INBOX=/var/mail/%u mail_nfs_index = yes mail_nfs_storage = yes mail_plugins = mail_log notify zlib managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mmap_disable = yes namespace { inbox = yes location = prefix = separator = / type = private } namespace { hidden = yes list = no location = prefix = Mail/ separator = / subscriptions = yes type = private } passdb { driver = pam } passdb { args = /opt/local/etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { autocreate = Trash autocreate2 = caughtspam autocreate3 = Sent autocreate4 = Drafts autosubscribe = Trash autosubscribe2 = caughtspam autosubscribe3 = Sent autosubscribe4 = Drafts mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = postmaster(a)hrz.uni-giessen.de quota_full_tempfail = yes sendmail_path = /usr/lib/sendmail service auth { client_limit = 11120 } service imap-login { process_min_avail = 16 service_count = 0 vsz_limit = 640 M } service imap { process_limit = 4096 vsz_limit = 1 G } ssl_cert = </etc/ssl/imap_hrz.crt ssl_key = </etc/ssl/imap_hrz.key syslog_facility = local0 userdb { driver = passwd } version_ignore = yes protocol lda { info_log_path = log_path = mail_plugins = mail_log notify zlib sieve } protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags mail_max_userip_connections = 20 mail_plugins = mail_log notify zlib autocreate imap_zlib } protocol lmtp { mail_plugins = mail_log notify zlib sieve } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xv%08Xu } On the remote side the configuration is # 2.0.16: /opt/local/etc/dovecot/dovecot.conf # OS: SunOS 5.10 sun4u zfs auth_debug = yes auth_debug_passwords = yes auth_verbose = yes disable_plaintext_auth = no lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = minerva1.hrz.uni-giessen.de mail_debug = yes mail_fsync = always mail_location = mdbox:/sanpool/mail%h/mdbox mail_nfs_index = yes mail_nfs_storage = yes mail_plugins = mail_log notify quota zlib managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mdbox_rotate_interval = 1 days mdbox_rotate_size = 16 M mmap_disable = yes namespace { inbox = yes location = prefix = separator = / type = private } namespace { hidden = yes list = no location = prefix = Mail/ separator = / subscriptions = yes type = private } namespace { location = maildir:/var/mail/public:CONTROL=/sanpool/mail/%u/Maildir/public:INDEX=/sanpool/mail/%u/Maildir/public prefix = Public/ separator = / subscriptions = no type = public } passdb { driver = pam } passdb { args = /opt/local/etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { autocreate = Trash autocreate2 = caughtspam autocreate3 = Sent autocreate4 = Drafts autosubscribe = Trash autosubscribe2 = caughtspam autosubscribe3 = Sent autosubscribe4 = Drafts fts = squat mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size quota = fs:Home-Verzeichnis:noenforcing zlib_save = gz zlib_save_level = 3 } postmaster_address = postmaster(a)hrz.uni-giessen.de quota_full_tempfail = yes sendmail_path = /usr/lib/sendmail service auth { client_limit = 11120 } service imap-login { process_min_avail = 16 service_count = 0 vsz_limit = 640 M } service imap { process_limit = 4096 vsz_limit = 1 G } ssl_cert = </etc/ssl/server.crt ssl_key = </etc/ssl/server.key syslog_facility = local0 userdb { driver = passwd } version_ignore = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags mail_max_userip_connections = 20 mail_plugins = mail_log notify quota zlib autocreate fts fts_squat imap_quota imap_zlib } protocol lda { info_log_path = log_path = mail_plugins = mail_log notify quota zlib sieve } protocol lmtp { mail_plugins = mail_log notify quota zlib sieve } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xv%08Xu } Thank you, Jürgen Obermann Hochschulrechenzentrum der Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 44 Tel. 0641-9913054

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[Dovecot] A small bug and a question about CONTEXT=SEARCH
by Anders 10 Jan '12

10 Jan '12

Hi, I have been looking at search and sorting with dovecot and have run into some things. The first one I think may be a minor bug because a set of commands result in the socket connection being closed without warning: UID SEARCH RETURN (SAVE COUNT) CHARSET UTF-8 (UNDELETED TEXT "foo") UID SEARCH RETURN (COUNT MIN) CHARSET UTF-8 () $ The empty paranthesis before the reference to the previous search result ($) is not legal IMAP, but should not cause the socket to be closed I think. Then I have question about RFC5267 and the announcement of CONTEXT=SEARCH in the capabilities. I think this RFC is supported by dovecot, or maybe just part of the RFC is supported? At least when I include the CONTEXT ADDTO or REMOVEFROM keywords I get an error, but UPDATE and CANCELUPDATE seem to be supported. The RFC has been updated by the RFC describing the NOTIFY extension to IMAP so maybe it has been decided to not add these keywords until a later time? I am using dovecot version 2.0.15 (with patches from Apple). Best Regards Anders

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[Dovecot] rewriting mail_location
by Burckhard Schmidt 10 Jan '12

10 Jan '12

Hello, I have LDAP as userdb. Entries containing attributes mail=alias.user1(a)some.domain.de and uid=user1 Mail to alias.user1(a)some.domain.de gets delivered into /datatest/user/alias.user1 instead of /datatest/user/user1 by lda. I have userdb { args = /usr/dovecot/etc/ldapuser.conf driver = ldap } with a ldapuser.conf: hosts ... base ... user_filter = (&(|(mail=%u)(mail=%n(a)some.domain) (uid=%u))(objectClass=posixAccount)) user_attrs = uid=mail_location=maildir:/datatest/user/%$, uidNumber=29,gidNumber=133 I hoped local part of attribute mail could be replaced by uid for local delivery with dovecots lda? Any hints how to do that? (With postfix I could rewrite the address to uid@host and use local_transport = dovecot.) postfix has virtual_transport = dovecot. LDAP entry: mail: alias.user1(a)some.domain.de uid: user1 homeDirectory: /dev/null uidNumber: 464 gidNumber: 100 mail to alias.user1(a)some.domain.de Jan 10 14:03:24 ubu1004 postfix/qmgr[25221]: C434D1EE: from=<user@domain>, size=239, nrcpt=1 (queue active) Jan 10 14:03:24 ubu1004 dovecot: lda: Debug: Loading modules from directory: /usr/dovecot/lib/dovecot Jan 10 14:03:24 ubu1004 dovecot: lda: Debug: Module loaded: /usr/dovecot/lib/dovecot/lib20_autocreate_plugin.so Jan 10 14:03:24 ubu1004 dovecot: auth: Debug: master in: USER#0111#011alias.user1#011service=lda Jan 10 14:03:24 ubu1004 dovecot: auth: Debug: ldap(alias.user1): user search: base=ou=users,ou=...,c=de scope=subtree filter=(&(|(mail=alias.user1)(mail=alias.user1(a)some.domain.de)(uid=alias.user1))(objectClass=posixAccount)) fields=uid,uidNumber,gidNumber some substitutions are visibly: Jan 10 14:03:24 ubu1004 dovecot: auth: Debug: ldap(alias.user1): result: uid(location=maildir:/datatest/user/%$/maildir)=user1 gidNumber(133)=100 uidNumber(29)=464 Jan 10 14:03:24 ubu1004 dovecot: auth: Debug: master out: USER#0111#011alias.user1#011location=maildir:/datatest/user/user1/maildir#011133=100#01129=464 Jan 10 14:03:24 ubu1004 dovecot: lda: Debug: auth input: alias.user1 location=maildir:/datatest/user/user1/maildir 133=100 29=464 Jan 10 14:03:24 ubu1004 dovecot: lda: Debug: Added userdb setting: plugin/location=maildir:/datatest/user/user1/maildir but alias "alias.user1" still used for delivery: Jan 10 14:03:24 ubu1004 dovecot: lda: Debug: Added userdb setting: plugin/133=100 Jan 10 14:03:24 ubu1004 dovecot: lda: Debug: Added userdb setting: plugin/29=464 Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): Debug: Effective uid=29, gid=133, home= Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): Debug: Namespace : type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/datatest/user/alias.user1/maildir:INDEX=/datatest/addons/index/alias.user1:CONTROL=/datatest/user/alias.user1/control:LAYOUT=fs Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): Debug: fs: root=/datatest/user/alias.user1/maildir, index=/datatest/addons/index/alias.user1, control=/datatest/user/alias.user1/control, inbox=/datatest/user/alias.user1/maildir, alt= Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): Debug: Namespace : Using permissions from /datatest/user/alias.user1/maildir: mode=0700 gid=-1 Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): Debug: none: root=, index=, control=, inbox=, alt= Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): Debug: Destination address: alias.user1@ubu1004 (source: user@hostname) Jan 10 14:03:24 ubu1004 dovecot: lda(alias.user1): msgid=unspecified: saved mail to INBOX Jan 10 14:03:24 ubu1004 postfix/pipe[25226]: C434D1EE: to=<alias.user1(a)some.domain.de>, relay=dovecot, delay=14, delays=14/0.01/0/0.02, dsn=2.0.0, status=sent (delivered via dovecot service) Jan 10 14:03:24 ubu1004 postfix/qmgr[25221]: C434D1EE: removed dovecot -n # 2.0.17 (684381041dc4+): /usr/dovecot/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-34-generic-pae i686 Ubuntu 10.04.3 LTS ext4 mail_gid = sysdov mail_location = maildir:/datatest/user/%n/maildir:INDEX=/datatest/addons/index/%n:CONTROL=/datatest/user/%n/control:LAYOUT=fs mail_plugins = autocreate mail_uid = sysdov passdb { args = failure_show_msg=yes imap driver = pam } service auth { client_limit = 30000 unix_listener auth-userdb { group = sysdov #effective 133 mode = 01204 user = sysdov #effective 29 } } userdb { args = /usr/dovecot/etc/ldapuser.conf driver = ldap } protocol lda { mail_plugins = autocreate } and ldapuser.conf: hosts ... base ... user_filter = (&(|(mail=%u)(mail=%n(a)some.domain) (uid=%u))(objectClass=posixAccount)) user_attrs = uid=mail_location=maildir:/datatest/user/%$, uidNumber=29,gidNumber=133 local part of mail should be replaced by uid for local delivery -- Regards --- Burckhard Schmidt

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[Dovecot] Proxy login failures
by Urban Loesch 10 Jan '12

10 Jan '12

Hi, I'm using two dovecot pop3/imap proxies in front of our dovecot servers. Since some days I see many of the following errors in the logs of the two proxy-servers: ... dovecot: pop3-login: Error: proxy: Remote "IPV6-IP":110 disconnected: Connection closed: Connection reset by peer (state=0): user=<myuser>, method=PLAIN, rip=remote-ip, lip=localip ... dovecot: imap-login: Error: proxy: Remote "IPV6-IP":143 disconnected: Connection closed: Connection reset by peer (state=0): user=<myuser>, method=PLAIN, rip=remote-ip, lip=localip ... When this happens the Client gets the following error from the proxy: -ERR [IN-USE] Account is temporarily unavailable. System-details: OS: Debian Linux Proxy: 2.0.5-0~auto+23 Backend: 2.0.13-0~auto+54 Have you any idea what could cause this type of error? Thanks and regards Urban Loesch doveconf -n from one of our backendservers: # 2.0.13 (02d97fb66047): /etc/dovecot/dovecot.conf # OS: Linux 2.6.38.8-vs2.3.0.37-rc17-rol-em64t-timerp x86_64 Debian 6.0.2 ext4 auth_cache_negative_ttl = 0 auth_cache_size = 40 M auth_cache_ttl = 12 hours auth_mechanisms = plain login auth_username_format = %Lu auth_verbose = yes deliver_log_format = msgid=%m: %$ %p %w disable_plaintext_auth = no login_trusted_networks = our Proxy IP's (v4 and v6) mail_gid = mailstore mail_location = mdbox:/home/vmail/%d/%n:INDEX=/home/dovecotindex/%d/%n mail_plugins = " quota mail_log notify zlib" mail_uid = mailstore managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave imapflags notify mdbox_rotate_size = 5 M passdb { args = /etc/dovecot/dovecot-sql-account.conf driver = sql } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size from mail_log_group_events = no quota = dict:Storage used::file:%h/dovecot-quota sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +notify +imapflags sieve_max_redirects = 10 zlib_save = gz zlib_save_level = 5 } protocols = imap pop3 lmtp sieve service imap-login { inet_listener imap { port = 143 } service_count = 0 vsz_limit = 256 M } service lmtp { inet_listener lmtp { address = * port = 24 } unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } vsz_limit = 512 M } service pop3-login { inet_listener pop3 { port = 110 } service_count = 0 vsz_limit = 256 M } ssl = no ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { args = /etc/dovecot/dovecot-sql-account.conf driver = sql } protocol lmtp { mail_plugins = " quota mail_log notify zlib sieve zlib" } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_max_userip_connections = 40 mail_plugins = " quota mail_log notify zlib imap_quota imap_zlib" } protocol pop3 { mail_plugins = " quota mail_log notify zlib" pop3_logout_format = bytes_sent=%o top=%t/%p, retr=%r/%b, del=%d/%m, size=%s uidl_hash=%u }

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[Dovecot] Strange error: DIGEST-MD5 mechanism can't be supported with given passdbs
by Yubao Liu 10 Jan '12

10 Jan '12

Hi all, I have no idea about that message, here is my configuration, what's wrong? Debian testing, Dovecot 2.0.15 $ doveconf -n # 2.0.15: /etc/dovecot/dovecot.conf # OS: Linux 3.1.0-1-686-pae i686 Debian wheezy/sid auth_default_realm = corp.example.com auth_krb5_keytab = /etc/dovecot.keytab auth_master_user_separator = * auth_mechanisms = gssapi digest-md5 auth_realms = corp.example.com auth_username_format = %n first_valid_gid = 1000 first_valid_uid = 1000 mail_location = mdbox:/srv/mail/%u/Mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave passdb { args = /etc/dovecot/master-users driver = passwd-file master = yes pass = yes } passdb { driver = pam } plugin { sieve = /srv/mail/%u/.dovecot.sieve sieve_dir = /srv/mail/%u/sieve } protocols = " imap lmtp sieve" service auth { unix_listener auth-client { group = Debian-exim mode = 0660 } } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { args = home=/srv/mail/%u driver = passwd } protocol lmtp { mail_plugins = " sieve" } protocol lda { mail_plugins = " sieve" } # cat /etc/dovecot/master-users xxx@corp.example.com:zzzzzzzz The zzzzz is obtained by "doveadm pw -s digest-md5 -u xxx(a)corp.example.com", I tried to add prefix "{DIGEST-MD5}" before the generated hash and/or add "scheme=DIGEST-MD5" to the passwd-file passdb's "args" option, both don't help. The error message: dovecot: master: Dovecot v2.0.15 starting up (core dumps disabled) dovecot: auth: Fatal: DIGEST-MD5 mechanism can't be supported with given passdbs gold dovecot: master: Error: service(auth): command startup failed, throttling I opened debug auth log, it showed dovecot read /etc/dovecot/master-users and parsed one line, then the error occurred. Doesn't passwd-file passdb support digest-md5 password scheme? If it doesn't support, how do I configure digest-md5 auth mechanism with digest-md5 password scheme for virtual users? Regards, Yubao Liu

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[Dovecot] Postfix user map
by Timo Sirainen 10 Jan '12

10 Jan '12

http://hg.dovecot.org/dovecot-2.1/rev/f562bcaca215 implements "postmap" type sockets, which follow Postfix's tcp_table(5) protocol. So you can ask: get user@domain and Dovecot answers one of: - 200 1 - 500 User not found - 400 Internal failure So you can use this with Postfix: virtual_mailbox_maps = tcp:127.0.0.1:1234 With Dovecot you can enable it with: service auth { inet_listener postmap { listen = 127.0.0.1 port = 1234 } } Anyone have ideas if this could be improved, or used for some other purposes?

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