Hi,

I know this is a self-inflicted problem due to wrong permissions set manually, but it should not crash I guess...

Regards Thomas

May 3 16:05:15 spectre dovecot: imap(alias@domain.tld): Error: opendir(/var/vmail/public/Mailing-Lists/Bind-Users/new) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +r perm: /var/vmail/public/Mailing-Lists/Bind-Users/new, euid is not dir owner) May 3 16:05:15 spectre dovecot: imap(alias@domain.tld): Error: stat(/var/vmail/public/Mailing-Lists/Bind-Users/tmp/ed136730ffd1de4b6d250000a998a2df) failed: Permission denied May 3 16:05:15 spectre dovecot: imap(alias@domain.tld): Panic: file mail-index.c: line 346 (mail_index_keywords_unref): assertion failed: (keywords->refcount > 0) May 3 16:05:15 spectre dovecot: imap(alias@domain.tld): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0 [0x7f7e592e1772] -> /usr/lib/dovecot/libdovecot.so.0 [0x7f7e592e17da] -> /usr/lib/dovecot/libdovecot.so.0(i_error+0) [0x7f7e592e1b83] -> /usr/lib/dovecot/libdovecot-storage.so.0 [0x7f7e5955d178] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_keywords_unref+0x10) [0x7f7e5958fcf0] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_copy+0x71) [0x7f7e5954dfa1] -> dovecot/imap alias@domain.tld 188.138.0.199 UID [0x409b69] -> dovecot/imap [alias@domain.tld 188.138.0.199 UID] [0x41004c] -> dovecot/imap [alias@domain.tld 188.138.0.199 UID] [0x4100fd] -> dovecot/imap alias@domain.tld 188.138.0.199 UID [0x410275] -> dovecot/imap alias@domain.tld 188.138.0.199 UID [0x410cc2] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xcb) [0x7f7e592ec4ab] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x18) [0x7f7e592eb628] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f7e592db1a3] -> dovecot/imap alias@domain.tld 188.138.0.199 UID [0x418d61] -> /lib/libc.so.6(__libc_start_main+0xe6) [0x7f7e58b661a6] -> dovecot/imap [alias@domain.tld 188.138.0.199 UID] [0x408999] May 3 16:05:15 spectre dovecot: master: Error: service(imap): child 9756 killed with signal 6 (core dumped)

#0 0x00007f7e58b79ed5 in raise () from /lib/libc.so.6 No symbol table info available. #1 0x00007f7e58b7b3f3 in abort () from /lib/libc.so.6 No symbol table info available. #2 0x00007f7e592e1785 in default_fatal_finish (type=<value optimized out>, status=0) at failures.c:164 backtrace = 0x10fc918 "/usr/lib/dovecot/libdovecot.so.0 [0x7f7e592e1772] -> /usr/lib/dovecot/libdovecot.so.0 [0x7f7e592e17da] -> /usr/lib/dovecot/libdovecot.so.0(i_error+0) [0x7f7e592e1b83] -> /usr/lib/dovecot/libdovecot-st"... #3 0x00007f7e592e17da in i_internal_fatal_handler (type=LOG_TYPE_PANIC, status=0, fmt=<value optimized out>, args=<value optimized out>) at failures.c:592 No locals. #4 0x00007f7e592e1b83 in i_panic (format=<value optimized out>) at failures.c:230 args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7fff547d8d40, reg_save_area = 0x7fff547d8c80}} #5 0x00007f7e5955d178 in mail_index_keywords_unref (_keywords=<value optimized out>) at mail-index.c:346 keywords = <value optimized out> __FUNCTION__ = "mail_index_keywords_unref" #6 0x00007f7e5958fcf0 in index_keywords_unref (keywords=0x115c620) at index-storage.c:614 No locals. #7 0x00007f7e5954dfa1 in mailbox_copy (_ctx=0x7fff547d8e20, mail=0x116d298) at mail-storage.c:1386 ctx = <value optimized out> box = (struct mailbox *) 0x1159e18 keywords = (struct mail_keywords *) 0x0 ret = -1 #8 0x0000000000409b69 in cmd_copy (cmd=0x112e8a8) at cmd-copy.c:66 client = (struct client *) 0x112e148 dest_ns = <value optimized out> dest_storage = <value optimized out> destbox = (struct mailbox *) 0x1159e18 t = (struct mailbox_transaction_context *) 0x115db60 search_args = (struct mail_search_args *) 0x116a6c8 messageset = 0x11301f8 "18430" mailbox = 0x1130200 "Public/Mailing-Lists/Bind-Users" storage_name = 0x1130207 "Mailing-Lists/Bind-Users" src_uidset = <value optimized out> status = MAILBOX_NAME_EXISTS_MAILBOX sync_flags = <value optimized out> imap_flags = <value optimized out> changes = {pool = 0x3000000020, uid_validity = 18022896, saved_uids = {arr = {buffer = 0x0, element_size = 9}, v = 0x0, v_modifiable = 0x0}, ignored_uid_changes = 1489302432, ignored_modseq_changes = 32638} copy_count = 1 msg = <value optimized out> ret = 1 __FUNCTION__ = "cmd_copy" #9 0x000000000041004c in client_command_input (cmd=0x112e8a8) at imap-client.c:646 client = (struct client *) 0x112e148 command = <value optimized out> __FUNCTION__ = "client_command_input" #10 0x00000000004100fd in client_command_input (cmd=0x112e8a8) at imap-client.c:696 client = (struct client *) 0x112e148 command = (struct command *) 0x6 __FUNCTION__ = "client_command_input" #11 0x0000000000410275 in client_handle_input (client=0x112e148) at imap-client.c:737 _data_stack_cur_id = 3 ret = 56 remove_io = <value optimized out> handled_commands = false __FUNCTION__ = "client_handle_input" #12 0x0000000000410cc2 in client_input (client=0x112e148) at imap-client.c:788 cmd = <value optimized out> output = (struct ostream *) 0x112e728 bytes = <value optimized out> #13 0x00007f7e592ec4ab in io_loop_handler_run (ioloop=<value optimized out>) at ioloop-epoll.c:212 ctx = (struct ioloop_handler_context *) 0x11047d0 event = (const struct epoll_event *) 0x1104840 list = (struct io_list *) 0x112e800 io = (struct io_file *) 0x112e7c0 tv = {tv_sec = 2, tv_usec = 537890} t_id = 2 msecs = <value optimized out> ret = 1 call = <value optimized out> #14 0x00007f7e592eb628 in io_loop_run (ioloop=0x11045c0) at ioloop.c:350 No locals. #15 0x00007f7e592db1a3 in master_service_run (service=0x1104490, callback=0x261c) at master-service.c:480 No locals. #16 0x0000000000418d61 in main (argc=1, argv=0x1104370) at main.c:359 service_flags = <value optimized out> storage_service_flags = <value optimized out> postlogin_socket_path = 0x0 username = 0x0 c = <value optimized out> set_roots = {0x41bf40, 0x0}