Dovecot 2.3.4 crash

[azurit at pobox.sk]

Hi,

is this a know problem? Newest Dovecot 2.3.4 package from  
repo.dovecot.org , Debian Stretch (fully upgraded).



Nov 29 14:25:11 server00 dovecot: lmtp(16854): Panic: file  
ostream-dot.c: line 208 (o_stream_dot_sendv): assertion failed:  
((size_t)ret == sent + added)


Nov 29 14:25:11 server00 dovecot: lmtp(16854): Error: Raw backtrace:  
/usr/lib/dovecot/libdovecot.so.0(+0xd25e1) [0x7fa5f7b655e1] ->  
/usr/lib/dovecot/libdovecot.so.0(+0xd2681) [0x7
fa5f7b65681] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0)  
[0x7fa5f7acd093] -> /usr/lib/dovecot/libdovecot.so.0(+0xbb97b)  
[0x7fa5f7b4e97b] -> /usr/lib/dovecot/libdovecot.so.0(+0x
fa4ae) [0x7fa5f7b8d4ae] ->  
/usr/lib/dovecot/libdovecot.so.0(o_stream_sendv+0x2e) [0x7fa5f7b8da3e]  
-> /usr/lib/dovecot/libdovecot.so.0(io_stream_copy+0x52)  
[0x7fa5f7b8e512] -> /usr
/lib/dovecot/libdovecot.so.0(o_stream_send_istream+0x58)  
[0x7fa5f7b8e008] ->  
/usr/lib/dovecot/libdovecot.so.0(smtp_client_command_send_more+0x1b1)  
[0x7fa5f7ad7351] -> /usr/lib/dov
ecot/libdovecot.so.0(+0x4a096) [0x7fa5f7add096] ->  
/usr/lib/dovecot/libdovecot.so.0(+0xfd0c3) [0x7fa5f7b900c3] ->  
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x75) [0x7fa5f7b
7e5d5] ->  
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x109)  
[0x7fa5f7b7ffd9] ->  
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x56)  
[0x7fa5f7b7e6e6] -> /
usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fa5f7b7e8f8] ->  
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)  
[0x7fa5f7af2d43] -> dovecot/lmtp [local DATA](main+
0x240) [0x565287c30f70] ->  
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)  
[0x7fa5f77142e1] -> dovecot/lmtp [local DATA](_start+0x2a)  
[0x565287c310ca]


Nov 29 14:25:11 server00 dovecot: lmtp(16854): Fatal: master:  
service(lmtp): child 16854 killed with signal 6 (core dumps disabled -  
https://dovecot.org/bugreport.html#coredumps)




azur