[Dovecot] Problem in deliver (Panic: file index-mail-headers.c ...)

[Stefan Roese]

Hi All,

I'm experiencing a problem with some mails in deliver. Here the logged error message:

deliver(stefan at roese.nl): 2009-05-06 11:57:36 Panic: file index-mail-headers.c: line 141 
(index_mail_parse_header_finish): assertion failed: ((match[match_idx] & 
HEADER_MATCH_FLAG_FOUND) == 0)
deliver(stefan at roese.nl): 2009-05-06 11:57:36 Error: Raw 
backtrace: /usr/lib/dovecot/deliver 
[0xb801ee51] -> /usr/lib/dovecot/deliver(default_fatal_handler+0x4c) 
[0xb801ef9c] -> /usr/lib/dovecot/deliver 
[0xb801e6e5] -> /usr/lib/dovecot/deliver(index_mail_parse_header+0x739) 
[0xb7fdea19] -> /usr/lib/dovecot/deliver(message_parser_parse_header+0x48) 
[0xb8016e88] -> /usr/lib/dovecot/deliver(index_mail_parse_headers+0x106) 
[0xb7fdef76] -> /usr/lib/dovecot/deliver 
[0xb7fdf566] -> /usr/lib/dovecot/deliver(index_mail_get_headers+0x2f) 
[0xb7fdf98f] -> /usr/lib/dovecot/deliver(mail_get_headers_utf8+0x25) 
[0xb7fe7315] -> /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin.so 
[0xb7dd7530] -> /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin.so 
[0xb7de2169] -> /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin.so(sieve_eval_bc+0x47e) 
[0xb7de33ee] -> /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin.so(sieve_execute_bytecode+0x125) 
[0xb7de9565] -> /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin.so(cmu_sieve_run+0x325) 
[0xb7dd8835] -> /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin.so 
[0xb7dd6486] -> /usr/lib/dovecot/deliver(main+0x11e4) 
[0xb7fa6eb4] -> /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) 
[0xb7e09775] -> /usr/lib/dovecot/deliver [0xb7fa47c1]

This is dovecot v1.1.11 used on Kubuntu 9.04. Any ideas what's the source for this problem 
and how to solve it?

Thanks,
Stefan