- dovecot - dovecot.org

lmtp seg fault
by Robert Blayzor 13 Nov '15

13 Nov '15

dovecot -n # 2.2.19: /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.9 (357ac0a0e68b+) # OS: FreeBSD 10.2-RELEASE-p7 amd64 doveconf: Warning: Dovecot was last started using /etc/dovecot/dovecot.conf, but this config is /usr/local/etc/dovecot/dovecot.conf auth_cache_size = 10 M auth_cache_ttl = 5 mins auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb auth_verbose = yes auth_worker_max_count = 10 base_dir = /var/run/dovecot/ default_client_limit = 2000 default_process_limit = 200 disable_plaintext_auth = no first_valid_uid = 25 imap_idle_notify_interval = 4 mins log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Ready to serve. mail_fsync = always mail_location = maildir:~/Maildir mail_nfs_index = yes mail_nfs_storage = yes mail_plugins = zlib quota mail_temp_dir = /var/tmp mailbox_list_index = yes maildir_very_dirty_syncs = yes managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body environment mailbox date index ihave duplicate mbox_write_locks = fcntl mmap_disable = yes namespace inbox { inbox = yes location = mailbox Archive { auto = subscribe special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { quota = maildir:User quota quota_exceeded_message = Quota exceeded (Mailbox is full) quota_rule = *:storage=1G quota_rule2 = Trash:ignore sieve = ~/.dovecot.sieve sieve_default = /etc/dovecot/sieve/global/JunkFolder.sieve sieve_dir = ~/.sieve sieve_extensions = -enotify sieve_global_dir = /etc/dovecot/sieve/global/ zlib_save = xz zlib_save_level = 6 } pop3_fast_size_lookups = yes pop3_save_uidl = yes protocols = imap pop3 lmtp sieve rejection_reason = Your message to <%t> was rejected:%n%n %r%n rejection_subject = [BOUNCE] %s service imap-login { inet_listener imap { port = 143 } process_min_avail = 4 service_count = 100 } service imap { executable = imap last-login } service last-login { executable = script-login /etc/dovecot/post-login.sh user = mailnull } service lmtp { process_min_avail = 4 unix_listener lmtp { mode = 0666 } user = mailnull } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 1 } service managesieve { process_limit = 100 } service pop3-login { inet_listener pop3 { port = 110 } process_min_avail = 4 service_count = 100 } service pop3 { executable = pop3 last-login } ssl = no ssl_cipher_list = ALL:!SSLv2:!LOW:!ADH:!NULL:!DES:@STRENGTH ssl_protocols = !SSLv2 !SSLv3 submission_host = localhost:25 userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol lmtp { mail_plugins = zlib quota sieve } protocol lda { mail_plugins = zlib quota } protocol imap { mail_max_userip_connections = 8 mail_plugins = zlib quota imap_quota } protocol pop3 { mail_max_userip_connections = 2 mail_plugins = zlib quota } protocol sieve { mail_max_userip_connections = 3 managesieve_implementation_string = Dovecot managesieve_max_line_length = 65536 } GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "amd64-marcel-freebsd"...(no debugging symbols found)... Core was generated by `lmtp'. Program terminated with signal 11, Segmentation fault. Reading symbols from /usr/local/lib/dovecot/libdovecot-lda.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/libdovecot-lda.so.0 Reading symbols from /usr/local/lib/dovecot/libdovecot-storage.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/libdovecot-storage.so.0 Reading symbols from /usr/local/lib/dovecot/libdovecot.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/libdovecot.so.0 Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done. Loaded symbols for /lib/libc.so.7 Reading symbols from /usr/local/lib/dovecot/lib10_quota_plugin.so...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/lib10_quota_plugin.so Reading symbols from /usr/local/lib/dovecot/lib20_zlib_plugin.so...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/lib20_zlib_plugin.so Reading symbols from /lib/libz.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libz.so.6 Reading symbols from /usr/lib/libbz2.so.4...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libbz2.so.4 Reading symbols from /usr/lib/liblzma.so.5...(no debugging symbols found)...done. Loaded symbols for /usr/lib/liblzma.so.5 Reading symbols from /usr/local/lib/dovecot/lib90_sieve_plugin.so...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/lib90_sieve_plugin.so Reading symbols from /usr/local/lib/dovecot-2.2-pigeonhole/libdovecot-sieve.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot-2.2-pigeonhole/libdovecot-sieve.so.0 Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done. Loaded symbols for /libexec/ld-elf.so.1 #0 0x0000000010dd08c0 in buffer_free () from /usr/local/lib/dovecot/libdovecot.so.0 (gdb) bt #0 0x0000000010dd08c0 in buffer_free () from /usr/local/lib/dovecot/libdovecot.so.0 #1 0x0000000010b12908 in mail_transaction_log_file_open () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #2 0x0000000010b165e0 in mail_transaction_log_find_file () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #3 0x0000000010b149d7 in mail_transaction_log_view_set () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #4 0x0000000010b03f4a in mail_index_sync_map () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #5 0x0000000010afb288 in mail_index_map () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #6 0x0000000010b11245 in mail_index_reset_error () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #7 0x0000000010b109ad in mail_index_open () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #8 0x0000000010b10853 in mail_index_open () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #9 0x0000000010aebd0b in index_storage_mailbox_open () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #10 0x0000000010aa3aec in maildir_is_backend_readonly () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #11 0x0000000010aa30f1 in maildir_is_backend_readonly () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #12 0x0000000011e15052 in zlib_plugin_deinit () from /usr/local/lib/dovecot/lib20_zlib_plugin.so #13 0x0000000010a7cfe2 in mailbox_open () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #14 0x0000000010a7cee4 in mailbox_open () from /usr/local/lib/dovecot/libdovecot-storage.so.0 #15 0x0000000010832330 in mail_deliver_save_open () from /usr/local/lib/dovecot/libdovecot-lda.so.0 #16 0x00000000128b4e1f in sieve_action_opr_optional_read () from /usr/local/lib/dovecot-2.2-pigeonhole/libdovecot-sieve.so.0 #17 0x00000000128ac9b3 in sieve_result_execute () from /usr/local/lib/dovecot-2.2-pigeonhole/libdovecot-sieve.so.0 #18 0x00000000128bc5bc in sieve_execute () from /usr/local/lib/dovecot-2.2-pigeonhole/libdovecot-sieve.so.0 #19 0x000000001266b06e in sieve_plugin_init () from /usr/local/lib/dovecot/lib90_sieve_plugin.so #20 0x00000000108329aa in mail_deliver () from /usr/local/lib/dovecot/libdovecot-lda.so.0 #21 0x00000000004087f1 in cmd_xclient () #22 0x0000000000407fbf in cmd_data () #23 0x0000000010de7bd3 in io_loop_call_io () from /usr/local/lib/dovecot/libdovecot.so.0 #24 0x0000000010de96ef in io_loop_handler_run_internal () from /usr/local/lib/dovecot/libdovecot.so.0 #25 0x0000000010de80d4 in io_loop_handler_run () from /usr/local/lib/dovecot/libdovecot.so.0 #26 0x0000000010de7eb8 in io_loop_run () from /usr/local/lib/dovecot/libdovecot.so.0 #27 0x0000000010d841d8 in master_service_run () from /usr/local/lib/dovecot/libdovecot.so.0 #28 0x0000000000405531 in main ()

1 0

fail: doveadm backup -s "<state>" with a huuge number of mailboxes
by Heiko Schlittermann 13 Nov '15

13 Nov '15

Hello, I'm using 2.2.13. For syncing I'm using repetitions of about the following (simplified for readability): state_file=.s doveadm \ -o imapc_master_user=<master> \ -o imapc_password=<pw> \ -o imapc_host=<host> \ -o mail_fsync=never \ backup -s "$(<.s)" -u "<user>" -R imapc: >.s_new mv .s_new .s The user has about 4501 IMAP folders. This makes a huge state output of about 128 kB. This in turn leads to an overly long command line in the next iteration. (excuse: command line too long) Is there any chance to solve this? I think, the only possibility would be to have doveadm-backup -s read the state from a *file*, wouldn't it? (Apart from the fact that I do not see a manpage for this, except entries in the Wiki (but this may be due to poor packaging) of the Debian dovecot package.) Best regards from Dresden/Germany Viele Grüße aus Dresden Heiko Schlittermann -- SCHLITTERMANN.de ---------------------------- internet & unix support - Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} - gnupg encrypted messages are welcome --------------- key ID: F69376CE - ! key id 7CBF764A and 972EAC9F are revoked since 2015-01 ------------ -

2 2

Problems after upgrade from 2.0 to 2.2
by Frank Rust 12 Nov '15

12 Nov '15

Hi all, after upgrade from some 2.0 version to 2.2.19 (debian) i face map login problems: # doveconf -n # 2.2.19 (ca91d540fd87): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.9 # OS: Linux 2.6.32-5-amd64 x86_64 Debian 8.2 ext4 auth_debug = yes auth_debug_passwords = yes auth_verbose = yes auth_verbose_passwords = plain debug_log_path = /var/log/dovecot-debug.log hostname = test.my.domain.de info_log_path = /var/log/dovecot.log mail_access_groups = smmta mail_debug = yes mail_location = mbox:/extra/mail/mbox.dir/%u/mailboxes:DIRNAME=mBoX-MeSsAgEs:INDEX=/extra/mail/mbox.dir/%u/index:CONTROL=/extra/mail/mbox.dir/%u/control:INBOX=/extra/mail/%u mail_plugins = quota mail_privileged_group = smmta 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 index ihave duplicate 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 { driver = pam } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change append quota = fs:User quota quota_rule = *:storage=1G quota_rule2 = Trash:storage=+100M quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u sieve = file:~/sieve;active=~/.dovecot.sieve } postmaster_address = postmaster(a)my.domain.de protocols = " imap sieve pop3" quota_full_tempfail = yes ssl = required ssl_cert = </etc/ssl/StartCom/test.my.domain.pem ssl_cipher_list = EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA256:EECDH+aRSA+RC4:EDH+aRSA EECDH RC4:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS ssl_key = </etc/ssl/StartCom/test.my.domain.key ssl_prefer_server_ciphers = yes ssl_protocols = !SSLv2 !SSLv3 userdb { driver = passwd } verbose_ssl = yes protocol lda { mail_plugins = } When I try to log in with openssl: $ openssl s_client -connect test.familie-rust.de:993 CONNECTED(00000003) depth=1 C = IL, O = StartCom Ltd., OU = Secure Digital Certificate Signing, CN = StartCom Class 1 Primary Intermediate Server CA verify error:num=20:unable to get local issuer certificate --- Certificate chain 0 s:/C=DE/CN=test.my.domain.de/emailAddress=postmaster@my.domain.de i:/C=IL/O=StartCom Ltd./OU=Secure Digital Certificate Signing/CN=StartCom Class 1 Primary Intermediate Server CA 1 s:/C=IL/O=StartCom Ltd./OU=Secure Digital Certificate Signing/CN=StartCom Class 1 Primary Intermediate Server CA i:/C=IL/O=StartCom Ltd./OU=Secure Digital Certificate Signing/CN=StartCom Certification Authority --- Server certificate -----BEGIN CERTIFICATE—— (…) -----END CERTIFICATE----- subject=/C=DE/CN=test.my.domain.de/emailAddress=postmaster(a)my.domain.de issuer=/C=IL/O=StartCom Ltd./OU=Secure Digital Certificate Signing/CN=StartCom Class 1 Primary Intermediate Server CA --- No client certificate CA names sent Peer signing digest: SHA512 Server Temp Key: ECDH, P-384, 384 bits --- SSL handshake has read 4328 bytes and written 506 bytes --- New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384 Server public key is 4096 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: Protocol : TLSv1.2 Cipher : ECDHE-RSA-AES256-GCM-SHA384 Session-ID: B0...5B Session-ID-ctx: Master-Key: 59D...EC0 Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None TLS session ticket lifetime hint: 300 (seconds) TLS session ticket: 0000 - 35 47 73 57 22 45 21 7d-fe ea a4 36 f1 35 76 3a 5GsW"E!}…6.5v: (…) Start Time: 1447309592 Timeout : 300 (sec) Verify return code: 20 (unable to get local issuer certificate) --- * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. 01 login frank myPassword * BYE Internal error occurred. Refer to server log for more information. closed And in the log files I find following information: dovecot.log Nov 12 07:47:27 imap-login: Info: Login: user=<frank>, method=PLAIN, rip=134.169.39.105, lip=134.169.39.22, mpid=9475, TLS, session=<...> dovecot-debug.log: Nov 12 07:47:27 imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Nov 12 07:47:27 auth: Debug: auth client connected (pid=11158) Nov 12 07:47:27 imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2002, ret=-1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2002, ret=-1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2002, ret=-1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2001, ret=1: unknown state [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x20, ret=1: SSL negotiation finished successfully [134.169.39.105] Nov 12 07:47:27 imap-login: Debug: SSL: where=0x2002, ret=1: SSL negotiation finished successfully [134.169.39.105] Nov 12 07:47:27 auth: Debug: client in: AUTH 1 PLAIN service=imap secured session=QkLwUFIkXsCGqSdp lip=134.169.39.22 rip=134.169.39.105 lport=993 rport=49246 resp=xxxx (previous base64 data removed) Nov 12 07:47:27 auth-worker(11140): Debug: pam(frank,134.169.39.105): lookup service=dovecot Nov 12 07:47:27 auth-worker(11140): Debug: pam(frank,134.169.39.105): #1/1 style=1 msg=Password: Nov 12 07:47:27 auth: Debug: client passdb out: OK 1 user=frank Nov 12 07:47:27 auth: Debug: master in: REQUEST 3038248961 11158 1 4e2362c2872f9288b7c8c3ebd8469620 session_pid=11159 request_auth_token Nov 12 07:47:27 auth-worker(11140): Debug: pam(frank,134.169.39.105): lookup Nov 12 07:47:27 auth: Debug: master userdb out: USER 3038248961 frank system_groups_user=frank uid=1000 gid=100 home=/home/frank auth_token=1e04d2c61fb327ec14c1e54ff678d73a325d20bf Nov 12 07:47:27 imap(frank): Debug: Loading modules from directory: /usr/lib/dovecot/modules Nov 12 07:47:27 imap(frank): Debug: Module loaded: /usr/lib/dovecot/modules/lib10_quota_plugin.so Nov 12 07:47:27 imap(frank): Debug: Effective uid=1000, gid=100, home=/home/frank Nov 12 07:47:27 imap(frank): Debug: Quota root: name=User quota backend=fs args= Nov 12 07:47:27 imap(frank): Debug: Quota rule: root=User quota mailbox=* bytes=1073741824 messages=0 Nov 12 07:47:27 imap(frank): Debug: Quota rule: root=User quota mailbox=Trash bytes=+104857600 messages=0 Nov 12 07:47:27 imap(frank): Debug: Quota warning: bytes=1020054732 (95%) messages=0 reverse=no command=quota-warning 95 frank Nov 12 07:47:27 imap(frank): Debug: Quota warning: bytes=858993459 (80%) messages=0 reverse=no command=quota-warning 80 frank Nov 12 07:47:27 imap(frank): Debug: Quota grace: root=User quota bytes=107374182 (10%) Nov 12 07:47:27 imap(frank): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=no, hidden=no, list=yes, subscriptions=yes location=mbox:/extra/mail/mbox.dir/frank/mailboxes:DIRNAME=mBoX-MeSsAgEs:INDEX=/extra/mail/mbox.dir/frank/index:CONTROL=/extra/mail/mbox.dir/frank/control:INBOX=/extra/mail/frank Nov 12 07:47:27 imap(frank): Debug: fs: root=/extra/mail/mbox.dir/frank/mailboxes, index=/extra/mail/mbox.dir/frank/index, indexpvt=, control=/extra/mail/mbox.dir/frank/control, inbox=/extra/mail/frank, alt= Nov 12 07:47:27 imap(frank): Debug: fs quota add mailbox dir = /extra/mail/mbox.dir/frank/mailboxes Nov 12 07:47:27 imap(frank): Debug: fs quota block device = /dev/mapper/ownCloudVG-ownCloudData Nov 12 07:47:27 imap(frank): Debug: fs quota mount point = /extra Nov 12 07:47:27 imap(frank): Debug: fs quota mount type = ext4 Nov 12 07:47:27 imap-login: Debug: SSL alert: close notify [134.169.39.105] What could cause the problem? The problem is not quota related (I enhanced the allowed quota and got the same results) best regards, Frank

2 3

hunting the fatty
by mancyborg＠gmail.com 11 Nov '15

11 Nov '15

Hello dear list, I've recently discovered 'doveadm stats' and I'm trying to use "doveadm stats dump user" and "doveadm stats dump session" to understand the pop/imap users that put more stress on the hard disks. My problem is that some users refuse to delete their emails from the server, so they keep 20GB of maildir files on the server, the webmail (roundcube) takes forever to open the inbox, the imap searches takes forever and meanwhile all the users wait. (already tried roundcube + memcache(d) but didn't help) So my problem is not the storage usage itself: I don't care if the user gets tons of emails with big attachments; my problem is when the user opens / searches an imap folder with more than 10K mails and iostat util goes 100% for minutes. So I've enabled dovecot's stats and enjoying "doveadm stats top", "stats-top.pl" and "doveadm stats dump user/session", but talking about "doveadm stats dump user" and its output fields: user reset_timestamp last_update num_logins num_cmds user_cpu sys_cpu min_faults maj_faults vol_cs invol_cs disk_input disk_output read_count read_bytes write_count write_bytes mail_lookup_path mail_lookup_attr mail_read_count mail_read_bytes mail_cache_hits I'm not sure which of those fields can help me and I can't find any relevant documentation. So here are my questions: 1. is there a documentation for those 21 fields and for 'doveadm stats' in general ? 2. what's the difference between disk_output, read_bytes, read_count and mail_read_bytes ? 3. which field of those is, in your opinion, more representative for expressing the workload that gives me problems ? 4. which settings do I need to store 1 week worth of stats ? I'm currenty using the 'standard' values: stats_refresh = 30 secs stats_track_cmds = yes stats_memory_limit = 16 M stats_command_min_time = 1 mins stats_domain_min_time = 12 hours stats_ip_min_time = 12 hours stats_session_min_time = 15 mins stats_user_min_time = 1 hours Can you please tell me the correct parameters to store 1 week of stats ? Thank you, Mike

3 9

log client certificate
by Eugenio De Vena 11 Nov '15

11 Nov '15

Hello, I would like to log the client certificate ( don't want to authenticate using client certificate but just "log" the client certificate if present ( both Subject and Public key ) ). Is it possibile ? Eugenio

1 0

Active directory
by Станислав Черкасов 11 Nov '15

11 Nov '15

Hello. I have a iRedmail server integrated with AD. I make it following theese instructions http://www.iredmail.org/docs/active.directory.html In my AD i have a user attributes: sAMAccountName = user1 userPrincipalName = csi(a)int.mdom.com proxyAddresses = mail1(a)out.lor.com i need login with user user1 without domain and then have an address mail1(a)out.lor.com i user it in /⁠etc/⁠dovecot/⁠dovecot-⁠ldap.conf -⁠-⁠-⁠-⁠ hosts = dc1.int.mdom.com:389 ldap_version = 3 auth_bind = yes dn = userksa dnpass = sdjfuihJKHSAJKDHQUWjdskfh base = OU=Users,OU=QOL,DC=int,DC=mdom,DC=com scope = subtree deref = never user_filter = (&(objectClass=user)(sAMAccountName=%n) (memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) pass_filter = (&(objectClass=user)(sAMAccountName=%n) (memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) default_pass_scheme = CRYPT user_attrs = =home=/var/vmail/vmail1/%Ld/%Ln/Maildir/,=mail=maildir:/var/vmail/vmail1/%Ld/%Ln/Maildir/ -⁠-⁠-⁠-⁠ i have tried to do: #user_filter = (&(proxyAddresses=%u) (objectClass=person)(memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) #pass_filter = (&(proxyAddresses=%u) (objectClass=person)(memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) but nothing works.

1 0

Dovecot+AD
by Станислав Черкасов 11 Nov '15

11 Nov '15

Hello. I have a iRedmail server integrated with AD. I make it following theese instructions http://www.iredmail.org/docs/active.directory.html In my AD i have a user attributes: sAMAccountName = user1 userPrincipalName = csi(a)int.mdom.com proxyAddresses = mail1(a)out.lor.com i need login with user user1 without domain and then have an address mail1(a)out.lor.com i user it in /etc/dovecot/dovecot-ldap.conf ---- hosts = dc1.int.mdom.com:389 ldap_version = 3 auth_bind = yes dn = userksa dnpass = sdjfuihJKHSAJKDHQUWjdskfh base = OU=Users,OU=QOL,DC=int,DC=mdom,DC=com scope = subtree deref = never user_filter = (&(objectClass=user)(sAMAccountName=%n) (memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) pass_filter = (&(objectClass=user)(sAMAccountName=%n) (memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) default_pass_scheme = CRYPT user_attrs = =home=/var/vmail/vmail1/%Ld/%Ln/Maildir/,=mail=maildir:/var/vmail/vmail1/%Ld/%Ln/Maildir/ ---- i have tried to do: #user_filter = (&(proxyAddresses=%u) (objectClass=person)(memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) #pass_filter = (&(proxyAddresses=%u) (objectClass=person)(memberof=CN=Mail_Users,OU=Groups,OU=SFP,DC=int,DC=mdom,DC=com)) but nothing works.

1 0

locked ldap users
by klemen＠arnes.si 11 Nov '15

11 Nov '15

Hello. I'm having a problem regarding locked users in ldap. We are using 389DS ldap server. We lock our users with nsAccountLock=true. If user successfully logs into dovecot, his credentials gets cached. When this user is locked its credentials still stay in cache. The problem I'm having is that our ldap server returns error code 53 ("Unwilling to perform - Account inactivated"). Dovecot takes this error code and decides that ldap doesnt work so it takes users credentials from cache (like stated in docs). User can still login untill his credentials are cleared from cache. Error message in logs: ldap(USERNAME,193.X.Y.Z,<aaaaaaaaaaaaaaaa>): ldap_bind() failed: Server is unwilling to perform Oct 20 14:39:31 SERVER dovecot: auth: ldap(USERNAME,193.X.Y.Z,<aaaaaaaaaaaaaaaa>): Falling back to expired data from cache Does dovecot reacts to error code 53 as it should? Maybe our ldap server should return different error code - like 49/533 (Account_disabled)? How would dovecot react to error code 49? Currenty we solve this problem by taking list of locked users and clear cache every minute. thank you and best regards, Klemen Andreuzzi Arnes

1 0

procmail as a content_filter with dovecot
by Vicki Brown 11 Nov '15

11 Nov '15

I am using Mac OS X Server. OS X Server uses postfix with dovecot set as mail_transport. I want to add procmail to the mix. I cannot use the (typical) mailbox_command = procmail -a "$EXTENSION" because mailbox_transport = dovecot overrides any mailbox_command parameter and it is NOT Possible to change, remove, or otherwise vary the mailbox_transport on OS X server. I'm thinking I should be able to set up a content_filter for procmail, but I've found nothing online to tell me if this is possible or how to declare it. Can anyone help? -- Vicki cfcl.com/vlb twitter.com/vlb

4 7

LDAP schema for dovecot proxy?
by Andrey Fesenko 10 Nov '15

10 Nov '15

Hello, I want to deploy dovecot proxy/director with the backend and authorization in LDAP. Dovecot wiki specifies only what is necessary to apply additional arguments that the scheme would have earned a proxy, but no solid LDAP schema. Is there such a scheme, such as the existing scheme http://www.zytrax.com/books/ldap/ape/courier.html http://pro-ldap.ru/sources/schema/qmail.schema http://open.rhx.it/phamm/schema/phamm.schema Unfortunately for the tasks they are not good because they just no dovecot-specific variables

1 0

Fw: new message
by dovecot 10 Nov '15

10 Nov '15

Hey! New message, please read <http://spectrumglobus.com/white.php?p> dovecot

1 0

Fw: new message
by dovecot 10 Nov '15

10 Nov '15

Hey! New message, please read <http://zoomincinema.in/rather.php?2> dovecot

1 0

Fw: new message
by fila＠pruda.com 10 Nov '15

10 Nov '15

Hey! New message, please read <http://prestigeimagegroup.com/few.php?hcpa> fila(a)pruda.com

1 0

Problem with permissions of the logfile
by Andreas Meyer 07 Nov '15

07 Nov '15

Hello! I want to have dovecot log into a separate file and set log_path = /var/log/dovecot instead of log_path = syslog Dovecot does not start if I do this. Tried to change permissions and overschip of the file, no luck, ha. Deleted it in the hope dovecot creates it but no. If I set log_path = syslog dovecot starts and I see it is running as # ps aux |grep dove root 2429 0.2 0.0 3416 2568 ? Ss 16:42 0:00 /usr/sbin/dovecot -F dovecot 2431 0.0 0.0 3100 2080 ? S 16:42 0:00 dovecot/anvil root 2432 0.0 0.0 3228 2316 ? S 16:42 0:00 dovecot/log root 2434 0.0 0.0 4220 3300 ? S 16:42 0:00 dovecot/config What must be done to have dovecot log into the specified file? Greetings Andreas

3 2

Questions on supporting Shared Mailboxes using imapc://
by Nathan Coulson 06 Nov '15

06 Nov '15

I was not able to get a shared mailbox setup working using imapc. Tested using mailboxes on the same server, as well as other servers. We are using dovecot 2.2.10 from Centos 7, following the guide at http://wiki2.dovecot.org/SharedMailboxes/ClusterSetup imapc_host=192.168.5.5 #(Local dovecot server) imapc_master_user= %u imapc_password=TempPass #imapc_user=test2(a)example.com # Added for testing. namespace { type = shared separator = / prefix = shared/%%u/ list = children location = imapc:~/shared/%%u/ } namespace { # used as a control to verify that shared mailboxes work type = shared separator = / prefix = shared2/%%u/ list = children location = sdbox:%%h:INDEXPVT=~/shared2/%%u } dict { acl = mysql:/etc/dovecot/dovecot-sql_aggelos_shares.conf.ext } plugin { acl = vfile acl_shared_dict = proxy::acl } mail_plugins = acl protocol imap { mail_plugins = acl imap_acl } passdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext } passdb { # for master user logins driver = sql args = /etc/dovecot/dovecot-sql_aggelos_aclmaster.conf.ext master = yes pass = yes } userdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext } I can login using test2@example.com*test@example.com (and see all of test2's email), and it looks like it authenticates ok via imap, but shared never shows up. No issues using shared2 which uses direct access to the mailbox doveadm acl debug -u test(a)example.com shared/test2(a)example.com (Fails, uses imapc) doveadm(test(a)example.com): Info: Mailbox 'INBOX' is in namespace 'shared/test2(a)example.com/' doveadm(test(a)example.com): Info: Mailbox path: /misc/1/2/mail/test@example.com-4/shared/test2@example.com/.INBOX doveadm(test(a)example.com): Info: All message flags are shared across users in mailbox doveadm(test(a)example.com): Info: User test(a)example.com has no rights for mailbox doveadm(test(a)example.com): Error: User test(a)example.com is missing 'lookup' right doveadm(test(a)example.com): Info: Mailbox shared/test2(a)example.com is NOT visible in LIST doveadm acl debug -u test(a)example.com shared/test2(a)example.com/Junk (Fails, contains a folder that exists) doveadm(test(a)example.com): Info: Mailbox 'Junk' is in namespace 'shared/test2(a)example.com/' doveadm(test(a)example.com): Info: Mailbox path: /misc/1/2/mail/test@example.com-4/shared/test2@example.com/.Junk doveadm(test(a)example.com): Info: All message flags are shared across users in mailbox doveadm(test(a)example.com): Info: User test(a)example.com has no rights for mailbox doveadm(test(a)example.com): Error: User test(a)example.com is missing 'lookup' right doveadm(test(a)example.com): Info: Mailbox shared/test2(a)example.com/Junk is NOT visible in LIST doveadm acl debug -u test(a)example.com shared/test2(a)example.com/z (Fails, contains a folder that does not exist. Expected result) doveadm(test(a)example.com): Error: Mailbox 'z' in namespace 'shared/test2(a)example.com/' doesn't exist in /misc/1/2/mail/test@example.com-4/shared/test2@example.com/.z doveadm acl debug -u test(a)example.com shared2/test2(a)example.com (Works, using direct storage) doveadm(test(a)example.com): Info: Mailbox 'INBOX' is in namespace 'shared2/test2(a)example.com/' doveadm(test(a)example.com): Info: Mailbox path: /misc/1/2/mail/test2(a)example.com-87/mailboxes/INBOX/dbox-Mails doveadm(test(a)example.com): Info: Per-user private flags in mailbox: \Seen doveadm(test(a)example.com): Info: User test(a)example.com has rights: lookup read write-seen doveadm(test(a)example.com): Info: Mailbox found from dovecot-acl-list doveadm(test(a)example.com): Info: User test2(a)example.com found from ACL shared dict doveadm(test(a)example.com): Info: Mailbox shared2/test2(a)example.com is visible in LIST It feels like the acl information in the vfiles is not available when using imapc. Our setup is as follows: (Currently does not use Dovecot Director, but has the same issues where shared mailboxes may not be local on the server) * Front servers, that are running dovecot (proxy to backend servers) * Backend Servers, each handle their own local users. Thank you -- Nathan Coulson System Administrator for Bravenet www.bravenet.com nathan(a)bravenet.com

1 1

Re: Problem with permissions of the logfile
by Andreas Meyer 06 Nov '15

06 Nov '15

Hello! To stay on the list. "S. Muthu Kumar" <ksmutthu(a)gmail.com> schrieb am 06.11.15 um 21:49:32 Uhr: > log_path here means the logging channel path. It refers to the logger > daemon to use to generate logs. > > Most of the linux/unix based applications prefer to use common system > logger to take care of writing the logs preferably under /var/log/ as > there are other structures(like rotating those logs periodically). > > do refer to man pages of syslog.conf or rsyslog.conf and see how you > can generate individual log files for devecot via (r)syslog daemon > while you have delegated dovecot logging responsibility to (r)syslog. I must admit I don't understand what is going on. I am running rsyslog on two servers and on both servers version 2.2.13 of dovecot. On the first I set log_path = /var/log/dovecot1 with -rw------- 1 root root 1093533 6. Nov 17:24 dovecot1 in /var/log and everthing is fine. If I do this on the newly set up server, dovecot does not start. Ofcourse I could set it up to log to syslog and prepare rsyslog.conf but why is it so? Regards Andreas

1 0

Problem with permissions of the logfile
by Andreas Meyer 06 Nov '15

06 Nov '15

Hello! I want to have dovecot log into a separate file and set log_path = /var/log/dovecot instead of log_path = syslog Dovecot does not start if I do this. Tried to change permissions and overschip of the file, no luck, ha. Deleted it in the hope dovecot creates it but no. If I set log_path = syslog dovecot starts and I see it is running as # ps aux |grep dove root 2429 0.2 0.0 3416 2568 ? Ss 16:42 0:00 /usr/sbin/dovecot -F dovecot 2431 0.0 0.0 3100 2080 ? S 16:42 0:00 dovecot/anvil root 2432 0.0 0.0 3228 2316 ? S 16:42 0:00 dovecot/log root 2434 0.0 0.0 4220 3300 ? S 16:42 0:00 dovecot/config What must be done to have doveot log into the specified file? Greetings Andreas

1 0

Patch for Dovecot 2.2.19 compilation failure
by Hammer, Adam 06 Nov '15

06 Nov '15

I’m almost embarrassed to submit the following patch. ==== cut here ==== --- dovecot-2.2.19/src/lib/bits.h.orig Thu Mar 19 08:42:32 2015 +++ dovecot-2.2.19/src/lib/bits.h Thu Nov 5 15:10:35 2015 @@ -10,7 +10,9 @@ #include <limits.h> #include <stddef.h> -#include <stdint.h> +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif #define UINT64_SUM_OVERFLOWS(a, b) \ (a > (uint64_t)-1 - b)

2 1

replication delays
by djk 05 Nov '15

05 Nov '15

I have two dovecot instances that replicate to each other. Mail arrives into "post" and it is generally accessed via IMAP on "france". Changes (moves/expunge etc) on "france" seem to replicate back to "post" more or less immediately. But this seems to happen only for this user. (Some) other users' (e.g. me) mail generally replicates more or less immediately in both directions. Nov 5 17:40:55 post dovecot: lmtp(willem@xxx): xF9mK6eUO1YsFQAAdYyp2A: sieve: msgid=<20151105173923.14970.95605@ssa-app-xxx>: stored mail into mailbox 'SSA' Nov 5 17:41:00 post dovecot: lmtp(willem@xxx): yV9mK6eUO1YsFQAAdYyp2A: sieve: msgid=<20151105173924.14970.91073@ssa-app-xxx>: stored mail into mailbox 'SSA' Nov 5 20:39:09 france dovecot: dsync-server(willem): save: box=SSA, uid=3130, msgid=<20151105173923.14970.95605@ssa-app-xxx>, size=9724 Nov 5 20:39:09 france dovecot: dsync-server(willem): save: box=SSA, uid=3131, msgid=<20151105173924.14970.91073@ssa-app-xxx>, size=9197 Any suggestions as to where to start looking? As you can see I am using 2.2.18 with mdbox and a simple all vmail based system with not many users. I am not seeing any error messages in my mail logs that suggest there any delays happening. Although I have seen a few things like this happening from time to time a busier account: Nov 5 12:12:07 france dovecot: dsync-server(djk): Error: Couldn't lock /home/imap/djk/.dovecot-sync.lock: Timed out after 30 seconds Nov 5 12:12:13 france dovecot: dsync-server(djk(a)tobit.co.uk): Error: Couldn't lock /home/imap/djk/.dovecot-sync.lock: Timed out after 30 seconds Nov 5 12:16:49 france dovecot: dsync-server(djk): Error: Couldn't lock /home/imap/djk/.dovecot-sync.lock: Timed out after 30 seconds root@france:/var/log# dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.8 (0c4ae064f307+) # OS: Linux 3.13.0-66-generic x86_64 Ubuntu 14.04.3 LTS auth_verbose = yes doveadm_password = <some secret string or other> first_valid_uid = 2000 imapc_features = rfc822.size fetch-headers imapc_host = <imap hostname> imapc_port = 993 imapc_ssl = imaps imapc_ssl_verify = no imapc_user = %n lda_mailbox_autocreate = yes login_greeting = IMAP ready. mail_attachment_dir = %h/attachments mail_attachment_min_size = 64 k mail_location = mdbox:%h:INBOX=%h/mail mail_plugins = " fts fts_lucene mail_log notify notify replication" mail_prefetch_count = 20 mailbox_list_index = yes 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 index ihave duplicate mdbox_rotate_size = 10 M namespace inbox { inbox = yes 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/dovecot-sql.conf.ext driver = sql } plugin { fts = lucene fts_lucene = whitespace_chars=@. mail_log_events = delete undelete expunge copy save mailbox_delete mailbox_rename mailbox_create mail_log_fields = uid box msgid size mail_replica = tcps:post:<same port as doveadm port> sieve = file:~/sieve;active=~/.dovecot.sieve } postmaster_address = postmaster(a)tobit.co.uk protocols = " imap lmtp sieve sieve" service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = vmail } unix_listener replication-notify { mode = 0666 user = vmail } } service auth { unix_listener exim-auth { group = Debian-exim mode = 0660 user = Debian-exim } } service config { unix_listener config { mode = 0666 user = vmail } } service doveadm { inet_listener { port = <some port or other> ssl = yes } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = <another port> } unix_listener lmtp { mode = 0666 } user = vmail } service managesieve-login { inet_listener sieve { port = <sieve port> } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service managesieve { process_limit = 100 } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 user = vmail } } ssl_cert = </etc/dovecot/tobit.crt ssl_client_ca_dir = /etc/ssl/certs ssl_key = </etc/dovecot/private/tobit.key ssl_protocols = !SSLv3 !SSLv2 userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = sieve }

1 0

Re: ssl-params: slow startup (patch for consideration)
by Joseph Tam 05 Nov '15

05 Nov '15

A. Schulze writes: > precomputing ssl-params is also possible without patching but it's a > little bit tricky > ... > Long version in german: https://andreasschulze.de/dovecot/ssl-params Nice. (You should probably point out to ensure ssl_parameters_regenerate is zero, otherwise all this work will get wiped out!) Joseph Tam <jtam.home(a)gmail.com>

2 1

Fw: new message
by Doug Wierenga 05 Nov '15

05 Nov '15

Hello! New message, please read <http://battersandco.com/meeting.php?e> Doug Wierenga

1 0

Fw: new message
by terry＠dop.com 05 Nov '15

05 Nov '15

Hello! New message, please read <http://profi2w.com.br/forget.php?80> terry(a)dop.com

1 0

ldap and proxy/proxy_maybe
by jjhoffart 04 Nov '15

04 Nov '15

Hello, I am trying to setup dovecot director and am receiving a lot of "Aborted login (proxy dest auth failed)" and "error proxying loops to itself" messages in the dovecot log. I don't fully understand the dovecot-ldap.conf file config? could someone please let me know if the following is correct. If so what could be causing the errors mentioned above, if not what needs to be corrected? hosts = 127.0.0.1:389 ldap_version = 3 auth_bind = yes dn = cn=vmail,dc=something,dc=somewhere dnpass = hi89Dfnptc55jRWG9oLQJUfWOH0CgV base = o=domains,dc=campus,dc=local scope = subtree deref = never # Below two are required by command 'doveadm mailbox ...' iterate_attrs = mail=user iterate_filter = (&(objectClass=mailUser)(accountStatus=active)(enabledService=mail)) user_filter = (&(objectClass=mailUser)(accountStatus=active)(enabledService=mail)(enabledService=%Ls%Lc)(|(mail=%u)(&(enabledService=shadowaddress)(shadowAddress=%u)))) user_attrs = mail=user,homeDirectory=home,=mail=maildir:~/Maildir/,mailQuota=quota_rule=*:bytes=%$ # Used for dn lookup pass_filter = (&(objectClass=mailUser)(accountStatus=active)(enabledService=mail)(enabledService=%Ls%Lc)(|(mail=%u)(&(enabledService=shadowaddress)(shadowAddress=%u)))) pass_attrs = mail=user,userPassword=password,someAttribute=proxy,hostName=host default_pass_scheme = CRYPT

1 0

ssl-params: slow startup (patch for consideration)
by Joseph Tam 04 Nov '15

04 Nov '15

Based on the recent found weaknesses in DH key exchange, http://weakdh.org/ I increased ssl_dh_parameters_length to 2048 bits, and found waited for 5+ minutes for dovecot to come back online after a restart. Unless you got a fast machine, the initialization of DH parameters can exceed your patience. Regeneration may not be a problem (if ssl_parameters_regenerate=0 or if Dovecot uses old parameters until regeneration finishes), but for cold starts, the server can be tied up for a few minutes creating DH parameters while clients queue up. I ran "openssl dhparam 2048" and got wildly varying run times of 1m45s, 11m56s, 0.4s, 2m19s, 3h23s. Most of the time was spent testing primality of candidate p *and* (p-1)/2 -- so called "safe prime". If you're unlucky, this can take a long time. However, it appears "safe" primes are not what they're cracked up to be -- they offer some guarantees, but are not safer than non-safe primes. Creating DH parameters without requiring primality of (p-1)/2 (i.e. what "openssl dhparam -dsaparam" does) results in much lower run-time bounds. I cribbed some OpenSSL code to create this (untested) patch. -------------------------------------------------------------------------------- --- iostream-openssl-params.c~ Tue Nov 3 16:08:38 2015 +++ iostream-openssl-params.c Tue Nov 3 15:43:39 2015 @@ -6,5 +6,2 @@ -/* 2 or 5. Haven't seen their difference explained anywhere, but 2 is the - default.. */ -#define DH_GENERATOR 2 @@ -14,2 +11,3 @@ DH *dh; + DSA *dsa; unsigned char *p; @@ -17,3 +15,13 @@ - dh = DH_generate_parameters(bitsize, DH_GENERATOR, NULL, NULL); + dsa = DSA_generate_parameters(bitsize, NULL, 0, NULL, NULL, NULL, NULL); + if (dsa == NULL) { + *error_r = t_strdup_printf( + "DSA_generate_parameters(bits=%d) failed: %s", + bitsize, openssl_iostream_error()); + return -1; + } + + dh = DSA_dup_DH(dsa); + DSA_free(dsa); + if (dh == NULL) { @@ -20,4 +28,4 @@ *error_r = t_strdup_printf( - "DH_generate_parameters(bits=%d, gen=%d) failed: %s", - bitsize, DH_GENERATOR, openssl_iostream_error()); + "DSA_dup_DH() failed: %s", + openssl_iostream_error()); return -1; -------------------------------------------------------------------------------- The other way to prevent long startup times is to pre-compute the DH parameter using "openssl dhparam -out dh2048.pem 2048". I can contribute a patch to do this (read file, convert it into ssl-parameters.dat, then set/behave like ssl_parameters_regenerate=0), but I couldn't figure out the best place to do this. ssl_params_if_unchanged()? Joseph Tam <jtam.home(a)gmail.com>

2 1

dovecot-lda can't create /var/mail dotlocks on debian
by John Clements 03 Nov '15

03 Nov '15

I've been using dovecot+postfix happily for many years, and I'm now configuring it for a new machine. However, I'm running into an old problem again, and thinking that there must be a better solution. The problem is that dovecot-lda is unable to create dotlock files in the /var/mail directory. Dovecot version: 1:2.2.13-12~deb8u1 (I'm guessing this is upstream version 2.2.13) OS: Debian Jessie Currently, my mail directory has these permissions: clements@desmond:~$ ls -ld /var/mail drwxrwsr-x 2 root mail 4096 Nov 2 22:07 /var/mail clements@desmond:~$ ls -l /var/mail total 8 -rw------- 1 clements mail 1382 Nov 2 21:59 clements -rw------- 1 granitemon mail 530 Nov 2 22:07 granitemon I've added mail_privileged_group = mail to allow creation of the dotlock files. When I configure postfix to deliver using dovecot-lda, I get logs that look like this: Nov 3 11:12:20 desmond dovecot: lda(granitemon): Error: setegid(privileged) failed: Operation not permitted Nov 3 11:12:20 desmond dovecot: lda(granitemon): msgid=< 20151103181306.A4B5B5FF32(a)desmond.XXXDOMAIN.org>: save failed to INBOX: BUG: Unknown internal error In order to isolate the error, I took postfix out of the equation, and called dovecot-lda directly: clements@desmond:/tmp$ cat bogusmail From: clements(a)XXXDOMAIN.org To: granitemon@localhost Date: November 3 2015 Subject: graaaah this is the body clements@desmond:/tmp$ /usr/lib/dovecot/dovecot-lda -e -d clements < bogusmail BUG: Unknown internal error clements@desmond:/tmp$ In response to this, mail.log now contains this similar error: Nov 3 11:34:57 desmond dovecot: lda(clements): msgid=unspecified: save failed to INBOX: BUG: Unknown internal error Nov 3 11:34:57 desmond dovecot: lda(clements): Error: setegid(privileged) failed: Operation not permitted I've tried a number of "random internet search" solutions, including - changing perms on mail files from 660 to 600 - enabling 'mail_access_groups=mail' in 10-mail.conf - adding individual users to the mail group. I guess I'm pretty confident that if dovecot is writing "BUG: Unknown internal error" in the logs, that this is is actually a bug in dovecot. OBresearch: I read through the release notes of 2.2.14 -- 2.2.19 to see if a relevant-looking bug had been fixed, but nothing jumped out at me. OBresearch: searching the dovecot mailing list, I found one *extremely* relevant thread called "Re: [Dovecot] started with dovecot sieve <http://dovecot.markmail.org/message/kgd34wberxuvmrsa?q=setegid>", but there didn't seem to be a solution contained in the thread. Final note: this doesn't appear to be confined to debian jessie: I took a look at my existing installation, and I see that in fact I just went ahead and made /var/mail world-writeable, which seems... sub-optimal. I'm sure I could do that here, too, but I'd certainly rather not. Thanks in advance, and let me know if I've left out relevant crucial information. Best, John Clements

2 7