- dovecot - dovecot.org

2.2.14 Panic in sync_expunge_range()
by Hans Morten Kind 25 Oct '14

25 Oct '14

I am getting some panics after upgrading from 2.2.13 to 2.2.14 This panic happens for one user only, he is subscribed to 86 folders, on two of them this panic happens quite often - several times a day. The mbox folders seems OK, less than 30M with 30 and 200 messages. Panic: file mail-index-sync-update.c: line 250 (sync_expunge_range): assertion failed: (count > 0) hmk GNU gdb 6.8 Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i386-pc-solaris2.10"... Reading symbols from /datapool/local/dovecot-2.2.14/lib/dovecot/libdovecot-storage.so.0...done. Loaded symbols for /local/dovecot-2.2.14/lib/dovecot/libdovecot-storage.so.0 Reading symbols from /datapool/local/dovecot-2.2.14/lib/dovecot/libdovecot.so.0...done. Loaded symbols for /local/dovecot-2.2.14/lib/dovecot/libdovecot.so.0 Reading symbols from /datapool/local/program/lib/libssl.so.1.0.0...done. Loaded symbols for /local/program/lib/libssl.so.1.0.0 Reading symbols from /datapool/local/program/lib/libcrypto.so.1.0.0...done. Loaded symbols for /local/program/lib/libcrypto.so.1.0.0 Reading symbols from /datapool/local/program/lib/libz.so...done. Loaded symbols for /local/program/lib/libz.so Reading symbols from /lib/libm.so.2...done. Loaded symbols for /lib/libm.so.2 Reading symbols from /datapool/local/program/lib/libiconv.so.2...done. Loaded symbols for /local/program/lib/libiconv.so.2 Reading symbols from /lib/librt.so.1...done. Loaded symbols for /lib/librt.so.1 Reading symbols from /lib/libnsl.so.1...done. Loaded symbols for /lib/libnsl.so.1 Reading symbols from /lib/libsocket.so.1...done. Loaded symbols for /lib/libsocket.so.1 Reading symbols from /lib/libsendfile.so.1...done. Loaded symbols for /lib/libsendfile.so.1 Reading symbols from /lib/libc.so.1...done. Loaded symbols for /lib/libc.so.1 Reading symbols from /lib/libdl.so.1...done. Loaded symbols for /lib/libdl.so.1 Reading symbols from /usr/lib/libz.so...done. Loaded symbols for /usr/lib/libz.so Reading symbols from /lib/libaio.so.1...done. Loaded symbols for /lib/libaio.so.1 Reading symbols from /lib/libmd.so.1...done. Loaded symbols for /lib/libmd.so.1 Reading symbols from /lib/ld.so.1...done. Loaded symbols for /lib/ld.so.1 Core was generated by `dovecot/imap imap-postlogin'. Program terminated with signal 6, Aborted. [New process 76621 ] #0 0xfe7fc8e5 in _lwp_kill () from /lib/libc.so.1 #0 0xfe7fc8e5 in _lwp_kill () from /lib/libc.so.1 No symbol table info available. #1 0xfe7f7765 in thr_kill () from /lib/libc.so.1 No symbol table info available. #2 0xfe7a376f in raise () from /lib/libc.so.1 No symbol table info available. #3 0xfe7829e1 in abort () from /lib/libc.so.1 No symbol table info available. #4 0xfeda13ba in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at failures.c:152 backtrace = 0x8093660 "0xfeda22d7 -> 0xfeda15d3 -> 0xfef31e5f -> 0xfef32d65 -> 0xfef3349e -> 0xfef33b77 -> 0xfef1dcbd -> 0xfef170e4 -> 0xfef173a4 -> 0xfef1767d -> 0xfef03e09 -> 0xfeea5540 -> 0xfeea5714 -> 0xfeea5857 -> 0xfe"... #5 0xfeda22d7 in i_internal_fatal_handler (ctx=0x8047400, format=0xfef5ebc8 "file %s: line %d (%s): assertion failed: (%s)", args=0x8047424 ".ìõþú") at failures.c:152 status = 0 #6 0xfeda15d3 in i_panic (format=0xfef5ebc8 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:152 ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0, timestamp_usecs = 0} args = 0x8047424 ".ìõþú" #7 0xfef31e5f in sync_expunge_range (ctx=0x8047600, seqs=0x80474d8) at ../../src/lib/array.h:197 map = (struct mail_index_map *) 0x80c5d90 range = (const struct seq_range *) 0x8093430 i = 134509780 count = 0 dest_seq1 = 562 prev_seq2 = 562 orig_rec_count = 4277606968 __FUNCTION__ = "sync_expunge_range" #8 0xfef32d65 in mail_index_sync_record_real (ctx=0x8047600, hdr=0x80b5d28, data=0x80b5df8) at ../../src/lib/array.h:197 rec = (const struct mail_transaction_expunge_guid *) 0x80b8968 end = (const struct mail_transaction_expunge_guid *) 0x80b8968 seqs = {arr = {buffer = 0x8093410, element_size = 8}, v = 0x8093410, v_modifiable = 0x8093410} seq = 0 modseq = 32612 ret = 0 __FUNCTION__ = "mail_index_sync_record_real" #9 0xfef3349e in mail_index_sync_record (ctx=0x8047600, hdr=0x80b5d28, data=0x80b5df8) at ../../src/lib/array.h:197 _data_stack_cur_id = 5 ret = 1 #10 0xfef33b77 in mail_index_sync_map (_map=0x80b5400, type=MAIL_INDEX_SYNC_HANDLER_HEAD, force=true) at ../../src/lib/array.h:197 map = (struct mail_index_map *) 0x0 index = (struct mail_index *) 0x80b53b0 view = (struct mail_index_view *) 0x80ab8b0 sync_map_ctx = {view = 0x80ab8b0, modseq_ctx = 0x809ca50, cur_ext_map_idx = 0, ext_intro_seq = 5, ext_intro_offset = 52, ext_intro_end_offset = 84, expunge_handlers = {arr = { buffer = 0x0, element_size = 0}, v = 0x0, v_modifiable = 0x0}, extra_contexts = {arr = { buffer = 0x809c348, element_size = 4}, v = 0x809c348, v_modifiable = 0x809c348}, unknown_extensions = 0x0, type = MAIL_INDEX_SYNC_HANDLER_HEAD, sync_handlers_initialized = 0, expunge_handlers_set = 0, expunge_handlers_used = 0, cur_ext_ignore = 0, internal_update = 0, errors = 0} thdr = (const struct mail_transaction_header *) 0x80b5d28 tdata = (const void *) 0x80b5df8 prev_seq = 5 start_offset = 0 prev_offset = 144 ret = 1 had_dirty = false reset = true __FUNCTION__ = "mail_index_sync_map" #11 0xfef1dcbd in mail_index_map (index=0x80b53b0, type=MAIL_INDEX_SYNC_HANDLER_HEAD) at mail-index-map-read.c:35 ret = 1 __FUNCTION__ = "mail_index_map" #12 0xfef170e4 in mail_index_try_open (index=0x80b53b0) at ../../src/lib/array.h:197 ret = 134919688 __FUNCTION__ = "mail_index_try_open" #13 0xfef173a4 in mail_index_open_files (index=0x80b53b0, flags=21) at ../../src/lib/array.h:197 ret = 1 #14 0xfef1767d in mail_index_open (index=0x80b53b0, flags=21) at ../../src/lib/array.h:197 ret = 134960048 __FUNCTION__ = "mail_index_open" #15 0xfef03e09 in index_storage_mailbox_open (box=0x80b47c8, move_to_memory=false) at index-storage.c:39 ibox = (struct index_mailbox_context *) 0x80b4a80 index_flags = 21 ret = 0 __FUNCTION__ = "index_storage_mailbox_open" #16 0xfeea5540 in mbox_mailbox_open_finish (mbox=0x80b47c8, move_to_memory=false) at mbox-storage.c:77 No locals. #17 0xfeea5714 in mbox_mailbox_open_existing (mbox=0x80b47c8) at mbox-storage.c:77 box = (struct mailbox *) 0x80b47c8 rootdir = 0xfeea581f "\215\225`ÿÿÿ\211T$\004\211\004$è\023¨ûÿ\211Eð\203}ð" box_path = 0x80b4b78 "/Home/USER/mail/pro/triad" move_to_memory = false #18 0xfeea5857 in mbox_mailbox_open (box=0x80b47c8) at mbox-storage.c:77 mbox = (struct mbox_mailbox *) 0x80b47c8 st = {st_dev = 82051096, st_pad1 = {0, 0, 0}, st_ino = 4141941, st_mode = 33152, st_nlink = 1, st_uid = 32440, st_gid = 4601, st_rdev = 0, st_pad2 = {0, 0}, st_size = 16826589, st_atim = { tv_sec = 1411034237, tv_nsec = 0}, st_mtim = {tv_sec = 1413152136, tv_nsec = 0}, st_ctim = { tv_sec = 1413659956, tv_nsec = 975959000}, st_blksize = 8192, st_blocks = 33016, st_fstype = "nfs", '\0' <repeats 12 times>, st_pad4 = {0, 0, 0, 0, 0, 0, 0, 0}} ret = 0 #19 0xfeec94cc in mailbox_open_full (box=0x80b47c8, input=0x0) at ../../src/lib/array.h:197 _data_stack_cur_id = 4 ret = 143 #20 0xfeec9807 in mailbox_open (box=0x80b47c8) at ../../src/lib/array.h:197 No locals. #21 0xfef024ec in index_storage_get_status (box=0x80b47c8, items=23, status_r=0x8047a04) at index-status.c:23 No locals. #22 0xfeeca8ac in mailbox_get_status (box=0x80b47c8, items=23, status_r=0x8047a04) at ../../src/lib/array.h:197 __FUNCTION__ = "mailbox_get_status" #23 0x08073ddb in imap_status_get (cmd=0x80b1fb8, ns=0x80ab1b0, mailbox=0x8093318 "pro/triad", items=0x8047a70, result_r=0x8047a04) at imap-status.c:23 client = (struct client *) 0x80b17b0 box = (struct mailbox *) 0x80b47c8 errstr = 0x8064d84 "\205Àu\034\213\205hÿÿÿÇD$\004\005" ret = 0 #24 0x08064e65 in cmd_status (cmd=0x80b1fb8) at cmd-status.c:23 client = (struct client *) 0x80b17b0 args = (const struct imap_arg *) 0x80ab240 list_args = (const struct imap_arg *) 0x80ab328 items = {status = 23, metadata = 0} result = {status = {messages = 0, recent = 0, unseen = 0, uidvalidity = 0, uidnext = 0, first_unseen_seq = 0, first_recent_uid = 0, last_cached_seq = 0, highest_modseq = 0, highest_pvt_modseq = 0, keywords = 0x0, permanent_flags = 0, permanent_keywords = 0, allow_new_keywords = 0, nonpermanent_modseqs = 0, no_modseq_tracking = 0, have_guids = 1, have_save_guids = 0, have_only_guid128 = 0}, metadata = { guid = "\000\000\000\000\001\000\000\000\r\000\000\000\033\000\000", virtual_size = 2199023255593, cache_fields = 0xfe7a67f2, precache_fields = 134861792, backend_ns_prefix = 0x80921a8 "0(\t\b\030", backend_ns_type = 134511236}, error = 134654712, errstr = 0x80b2038 "STATUS"} ns = (struct mail_namespace *) 0x80ab1b0 mailbox = 0x8093318 "pro/triad" orig_mailbox = 0x80ab2f8 "pro/triad" selected_mailbox = false #25 0x0806aa61 in command_exec (cmd=0x80b1fb8) at imap-commands.c:101 hook = (const struct command_hook *) 0x809bfd8 ret = 8 #26 0x080699d2 in client_command_input (cmd=0x80b1fb8) at imap-client.c:130 client = (struct client *) 0x80b17b0 command = (struct command *) 0x3 __FUNCTION__ = "client_command_input" #27 0x08069cb7 in client_command_input (cmd=0x80b1fb8) at imap-client.c:130 client = (struct client *) 0x80b17b0 command = (struct command *) 0x809d3d4 __FUNCTION__ = "client_command_input" #28 0x08069dba in client_handle_next_command (client=0x80b17b0, remove_io_r=0x8047b9d) at imap-client.c:130 No locals. #29 0x08069e57 in client_handle_input (client=0x80b17b0) at imap-client.c:130 _data_stack_cur_id = 3 ret = 10 remove_io = false handled_commands = false __FUNCTION__ = "client_handle_input" #30 0x08069fe0 in client_input (client=0x80b17b0) at imap-client.c:130 cmd = (struct client_command_context *) 0x80aa9a4 output = (struct ostream *) 0x80abe08 bytes = 55 __FUNCTION__ = "client_input" #31 0xfedba96d in io_loop_call_io (io=0x80abe70) at ioloop.c:28 ioloop = (struct ioloop *) 0x809bf20 t_id = 2 __FUNCTION__ = "io_loop_call_io" #32 0xfedbc0cc in io_loop_handler_run_internal (ioloop=0x809bf20) at ioloop-poll.c:96 ctx = (struct ioloop_handler_context *) 0x809ca10 pollfd = (struct pollfd *) 0x809e0a8 tv = {tv_sec = 1799, tv_usec = 999672} io = (struct io_file *) 0x80abe70 msecs = 1800000 ret = 0 call = true #33 0xfedbab06 in io_loop_handler_run (ioloop=0x809bf20) at ioloop.c:28 No locals. #34 0xfedbaa5d in io_loop_run (ioloop=0x809bf20) at ioloop.c:28 __FUNCTION__ = "io_loop_run" #35 0xfed41db1 in master_service_run (service=0x809be68, callback=0x80771da <client_connected>) at master-service.c:75 No locals. #36 0x08077577 in main (argc=2, argv=0x809bc78) at main.c:72 set_roots = {0x8092fe0, 0x0} login_set = {auth_socket_path = 0x80930e8 "", postlogin_socket_path = 0x8093120 "", postlogin_timeout_secs = 60, callback = 0x8076f4e <login_client_connected>, failure_callback = 0x807715d <login_client_failed>, request_auth_token = 1} service_flags = MASTER_SERVICE_FLAG_KEEP_CONFIG_OPEN storage_service_flags = MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT username = 0x0 c = -1

2 1

Properly "locking" a useraccount (on a proxy)
by Ralf Hildebrandt 25 Oct '14

25 Oct '14

I'm preparing a migration of several mailboxes to another machine. The different useraccounts are distributed to different backend machines by means of a dovecot LMTP/IMAP/POP proxy. Proxying is working really well (now that the kernel does as it should). But how can I "lock" a user during migration? The plan is: ============ * lock the user * kick the user (doveadm kick) * migrate mailbox (some rsync magic) * unlock the user again But how would I lock the user? What locking needs to achieve: 1) Disallow IMAP/POP login (that's easy!) 2) defer LMTP delivery somehow (Postfix is talking to dovecot's LMTP server) Because currently, we're seeing dovecot trying local delivery on the proxy machine once an account is locked (probably because LMTP proxying uses passdb lookups, and since that one is failing it's using the userdb lookup?): Oct 21 20:15:27 lmtp(87892): Error: user sys4(a)test.invalid: Initialization failed: Namespace '': mkdir(/var/mail/test.invalid/sys4/mdbox/mailboxes) failed: Permission denied (euid=10000(vmail) egid=10000(vmail) missing +w perm: /var/mail, we're not in group 8(mail), dir owned by 0:8 mode=0775) Admittedly, this is somehow working. But it's not very elegant to use a side-effect. Is the a reserved userdb/passwd return value which will let dovecot "tempfail" in a n elegant fashion? -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein

5 7

Dovecot Master/Master Replication Problem
by Felix Amler 25 Oct '14

25 Oct '14

Hi, I've set up 2 servers with dovecot 2.2.9 using maildir using structure: /var/maildir/domain/localpart Server A: mx1.xxx.de Server B: mx2.xxx.de Mails are delivered to dovecot only on server A by exim4/dovecot deliver replication to Server B works immediatelly: mark mail as read on server A, mail is marked as read on server B. BUT: when i mark a mail as read on Server B, noting happens. On Server A I get messages like this in dovecot-error.log: 2014-10-22 22:35:05 dsync-server(localpart(a)domain.de): Error: stat(/var/maildir/domain.de/localpart/.dovecot-sync.lock/tmp) failed: Not a directory 2014-10-22 22:35:05 dsync-server(localpart(a)domain.de): Error: Failed to access mailbox dovecot-sync.lock: Internal error occurred. Refer to server log for more information. [2014-10-22 22:35:05] I googled a bit, this could habben if there is a file ".dovecot-sync.lock" in the maildir, but I've double checked that, there is no such file... Why does it work in one direction, but not in the other? Please help best regards Felix

2 1

Replication .dovecot-sync.lock
by Hans-Werner Paulsen 25 Oct '14

25 Oct '14

Hello all, I have set up two servers with dovecot and replication. The mail location is mail_location = sdbox:/var/spool/mail/%u Everything works fine when I override the homedirectories userdb { driver = passwd override_fields = home=/var/spool/mail/%u } But, when I do not override the homedirectories, replication does not work, and the following error is logged: Oct 24 14:40:45 dsync-local(hans): Error: Couldn't create lock /afs/mpa/home/hans/.dovecot-sync.lock: Permission denied With a self-written module an IMAP user can get access to his homedirectory: protocol imap { mail_plugins = afsToken } The user has to type in his password. Obviously this does not work for replication. Is there a way to specify a different location for the lockfile? Isn't better to use the maildirectory but the homedirectory? Is there a way to set the homedirectory differently for replication? Thank you for any help. HW -- Hans-Werner Paulsen hans(a)MPA-Garching.MPG.DE MPI für Astrophysik Tel 089-30000-2602 Karl-Schwarzschild-Str. 1 Fax 089-30000-2235 D-85741 Garching

2 1

2.2.14 and "Panic: file virtual-sync.c"
by Michael Köhler 25 Oct '14

25 Oct '14

Hi, after upgrading to 2.2.14 (debian wheezy with apt source from rename-it.nl) I´ve got from time to time a panic in virtual plugin. Here are an excerpt from the log file: ---------------------------------- Oct 21 20:44:15 mailserver dovecot: imap(michael@DOMAIN): flag_change: box=Virtual.Ungelesen, uid=1, msgid=<54466F71.3050702(a)makomi.de>, size=1661, flags=(\Seen \Draft \Recent) Oct 21 20:44:15 mailserver dovecot: imap(michael@DOMAIN): Panic: file virtual-sync.c: line 1115 (virtual_sync_backend_box): assertion failed: (array_count(&bbox->sync_pending_removes) == 0) Oct 21 20:44:15 mailserver dovecot: imap(michael@DOMAIN): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x752af) [0x7f5f2630e2af] -> /usr/lib/dovecot/libdovecot .so.0(+0x7530e) [0x7f5f2630e30e] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f5f262c05de] -> /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x266c ) [0x7f5f24abb9cc] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x35) [0x7f5f26601195] -> dovecot/imap(imap_sync_init+0x7a) [0x41faaa] -> dovecot/imap(cmd_sync_dela yed+0x190) [0x420710] -> dovecot/imap(client_handle_input+0x1d5) [0x417a35] -> dovecot/imap(client_input+0x72) [0x417d22] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5b) [ 0x7f5f263200fb] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xbb) [0x7f5f2632117b] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9) [0x7f5f26320189] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f5f26320208] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f5f262c5ab3] -> dovecot/imap(main+0x2a1) [0x 40c311] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f5f25f2bead] -> dovecot/imap() [0x40c475] Oct 21 20:44:15 mailserver dovecot: imap(michael@DOMAIN): Fatal: master: service(imap): child 31075 killed with signal 6 (core dumps disabled) ————————————————— Are the problem well-known? And what could I do? Thanks, Michael

2 1

dovecot-lda from postfix on remote dovecot server
by nik600 25 Oct '14

25 Oct '14

Dear all i've got many SMTP front-end that filter the mail and do some custom stuff... then when i've decided the final destination i'd like to call /usr/lib/dovecot/dovecot-lda to deliver the mail. Actually i have in master.cf: #####################à dovecot unix - n n - - pipe flags=DRhu user=vmail:vmail null_sender= argv=/usr/lib/dovecot/dovecot-lda -f ${sender} -d ${recipient} #####################à I'd like to know if is possible to use some other command or some additional parameter to deliver the mail to a remote dovecot server. Thanks -- /*************/ nik600 http://www.kumbe.it

3 3

Replication only sporadic
by Lucas Rothamel - Eye Catching Webdesign 24 Oct '14

24 Oct '14

Hello dear Dovecot Gurus, I am setting up two servers with Dovecot replication as hot-standby servers for a small high availability cluster, switch-over through DNS-redirect. For testing purposes, both servers are generating a small test mail every few minutes and delivering to the local dovecot each. In my mail client, I added both servers through IMAP to watch how the replication is working. However, I noted that replication is very sporadic: sometimes a new email is received "instantaneous" by both servers, then no replication updates are visible for hours, and suddenly all missing mail appear in the other server. Why is this? Can this be changed to be more realtime? Thank you! Lucas doveconf -n: # 2.2.14: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.7 ext4 auth_mechanisms = plain login cram-md5 disable_plaintext_auth = no info_log_path = /var/log/dovecot-info.log log_timestamp = "%Y-%m-%d %H:%M:%S " mail_debug = yes mail_location = maildir:/home/%d/%n/Maildir mail_plugins = " notify replication" mail_privileged_group = mail passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { mail_replica = remote:vmail@... quota = maildir:User quota quota_rule = *:storage=1GB replication_full_sync_interval = 1 hours } protocols = imap pop3 service aggregator { fifo_listener replication-notify-fifo { mode = 0600 user = vmail } unix_listener replication-notify { mode = 0600 user = vmail } } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = root } service config { unix_listener config { user = vmail } } service doveadm { user = vmail } service replicator { process_min_avail = 1 } ssl_cert = ... ssl_key = ... userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol imap { mail_plugins = quota imap_quota } protocol pop3 { mail_plugins = quota pop3_uidl_format = %08Xu%08Xv } protocol lda { info_log_path = /var/log/dovecot-lda.log mail_plugins = quota postmaster_address = ... } -- Lucas Rothamel Eye Catching Webdesign info(a)eye-catching-webdesign.de - www.eye-catching-webdesign.de You know, we go to the gym to keep the body fit. Similarly the mind needs some rest. The mind is bombarded with so many impressions. Our mind has been bombarded by impressions the whole time. It needs a different kind of rest other than sleep. And meditation is such a rest. It calms the mind. energizes the spirit and makes the body more strong and vibrant. improves the immune system. The immune cells, the T-cell count go higher through Sudarshan Kriya and meditation. And you feel so nice inside. - Sri Sri Ravi Shankar I love deadlines. I like the whooshing sound they make as they fly by. -- Douglas Adams

1 0

Sieve Advice Needed, Please
by Casey Bralla 24 Oct '14

24 Oct '14

Anybody here familiar with the Sieve language? I'm rebuilding my mail server, and I am working with the sieve language to automatically filter spam into a separate account. However, I've hit a snag that I can't get around. BTW, I'm using a clean install of dovecot, postfix, spamassassin on Debian 7.5. I want to do server-side spam filtering, so I've got spamasassin identifying spam, and then have sieve sorting the mail to a special spam folder. I can easily send spam to special folder in the inbox for each mail user, but I wanted to have a single mail account for spam. I can use the "redirect" sieve command to send anything with the X-spam-flag set, but this triggers an error and bounces the offending mail. The bounce message is: From: MAILER-DAEMON(a)NerdWorld.org (Mail Delivery System) To: casey(a)vmailservertest.nerdworld.org Subject: Undelivered Mail Returned to Sender Date: Sun, 19 Oct 2014 16:41:49 -0400 (EDT) This is the mail system at host VMailServerTest.NerdWorld.org. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <spam(a)vmailservertest.nerdworld.org>: mail forwarding loop for spam(a)vmailservertest.nerdworld.org From: casey(a)vmailservertest.nerdworld.org Date: Sun, 19 Oct 2014 16:41:20 -0400 (EDT) viagra!!!! www.viagra.com I think this is a recursion problem, since the redirected mail has to go through the spamassassin check and sieve again. I tried to get clever and prevent the recursion, but I'm not clever enough. Here is my sieve rule file. # # # A rule to move spam to the spam user # based on spamassassin setting the spam flag # # # require ["redirect"]; (Not needed, since it is part of the basis sieve spec) # # rule:[SPAM] if header :contains "X-Spam-Flag" ["YES"] { if address :is "to" "Spam(a)VMailServerTest.NerdWorld.org" { keep; } else { redirect "spam(a)VMailServerTest.NerdWorld.org"; } } # # # Anybody able to give me any advice? TIA -- Casey Bralla Chief Nerd in Residence The NerdWorld Organisation www.NerdWorld.org

3 2

Re: special "what's my ip" pop account
by Joseph Tam 24 Oct '14

24 Oct '14

Steffen Kaiser writes: > let's put aside the question, if this way is sensible or not. [... continuing in nonsensible mode ...] > And if you are at it, maybe a dummy server with a self-made script that > returns "+OK POP3 your IP is ....", then return +FAIL for any further > command. Been there, done that (for a different problem). Not all mail readers will show you banners; to make this really work, you have to implement USER and PASS (accepts anything), STAT and LIST (one message available), RETR (dump your informational message payload), QUIT (disconnect), maybe TOP, and everything else is an +OK no-op. I patched Qualcomm's qpopper to do this. As to whether the OP *should* do this, definitely not. Find a better solution. Joseph Tam <jtam.home(a)gmail.com>

1 0

Public root folder is \Noselect
by G H 23 Oct '14

23 Oct '14

I am utilizing a public namespace via http://wiki2.dovecot.org/SharedMailboxes/Public and using sdbox storage format. How can I get rid of the \Noselect flag that is set by default for this folder? IMAP output: b LIST "" "*" * LIST (\HasNoChildren \Sent) "/" Sent * LIST (\HasNoChildren \Trash) "/" Trash * LIST (\Noselect \HasNoChildren) "/" Public * LIST (\HasNoChildren) "/" INBOX If this is not possible, what is the best way to create a sub-folder in here upon system setup (one w/o a \Noselect flag)? Thanks, G H

1 0