Hello!
Got a panic&assertion failed with LMTP proxy. Target Dovecot LMTP
server hanged and Dovecot LMTP proxy server started logging
panics/assertions. Core dumps were disabled unfortunately, so I don't
know if this is helpful at all:
Dec 29 15:41:58 lmtp(8853): Panic: file lmtp-proxy.c: line 370
(lmtp_proxy_output_timeout): assertion failed: (proxy->data_input->eof)
Dec 29 15:41:58 lmtp(8853): Error: Raw backtrace:
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0 [0xb76aa7c1] ->
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0 [0xb76aa83f] ->
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0(i_error+0)
[0xb76aab14] -> dovecot/lmtp [0x804e3f4] ->
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0(io_loop_handle_timeouts+0xe0)
[0xb76b7720] ->
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x8b)
[0xb76b843b] ->
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0(io_loop_run+0x40)
[0xb76b7340] ->
/usr/local/dovecot20/lib/dovecot/libdovecot.so.0(master_service_run+0x2a)
[0xb76a31fa] -> dovecot/lmtp(main+0x170) [0x804b380] ->
/lib/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7516455] ->
dovecot/lmtp [0x804b171]
Dec 29 15:41:58 master: Error: service(lmtp): child 8853 killed with
signal 6 (core dumps disabled)
doveconf -n output:
$ /usr/local/dovecot20/bin/doveconf -c
/usr/local/dovecot20/etc/dovecot/dovecot-lmtpproxy.conf -n
# 2.0.8: /usr/local/dovecot20/etc/dovecot/dovecot-lmtpproxy.conf
# OS: Linux 2.6.31.5 i686 Debian 5.0.7
auth_cache_negative_ttl = 0
auth_mechanisms = plain login
auth_socket_path = /usr/local/dovecot20/var/run/dovecot-lmtpproxy/auth-userdb
auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@&:
auth_verbose = yes
base_dir = /usr/local/dovecot20/var/run/dovecot-lmtpproxy/
disable_plaintext_auth = no
listen = *
lmtp_proxy = yes
log_path = /var/log/dovecot.lmtpproxy/dovecot.lmtpproxy.log
login_log_format_elements = user=<%u> service=%s method=%m rip=%r lip=%l %c
login_trusted_networks = 172.16.83.64/26
mail_fsync = never
mail_gid = 1000
mail_location = maildir:~/Maildir
mail_uid = 1000
maildir_very_dirty_syncs = yes
passdb {
args = /usr/local/dovecot20/etc/dovecot/dovecot-sql.lmtpproxy.alias.conf
driver = sql
}
postmaster_address = postmaster@example.com
protocols = lmtp
service auth-worker {
user = $default_internal_user
}
service auth {
client_limit = 8192
unix_listener auth-userdb {
mode = 0666
}
}
service imap-login {
process_min_avail = 1
service_count = 0
vsz_limit = 1 G
}
service imap {
process_limit = 2048
}
service lmtp {
inet_listener lmtp {
address = *
port = 24
}
process_min_avail = 1
service_count = 0
user = mailuser
vsz_limit = 512 M
}
service pop3-login {
process_min_avail = 1
service_count = 0
vsz_limit = 1 G
}
service pop3 {
process_limit = 2048
}
ssl = no
verbose_proctitle = yes
protocol lda {
info_log_path =
log_path =
mail_fsync = optimized
}
protocol imap {
imap_client_workarounds = delay-newmail
mail_max_userip_connections = 20
}
protocol lmtp {
mail_fsync = optimized
}
protocol pop3 {
mail_max_userip_connections = 5
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}