[root@mh1 ~]# strace -p 29994
Process 29994 attached
accept(4, 0, NULL)                      = 11
fcntl(10, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0)                                = 0
getpeername(11, {sa_family=AF_LOCAL, NULL}, [2]) = 0
write(3, "\2\0\0\0*u\0\0", 8)           = 8
dup2(11, 0)                             = 0
dup2(11, 1)                             = 1
dup2(11, 2)                             = 2
close(11)                               = 0
write(3, "\3\0\0\0*u\0\0", 8)           = 8
getpeername(0, {sa_family=AF_LOCAL, NULL}, [2]) = 0
open("/var/lib/imap/log/postman/lmtpunix-29994", O_WRONLY|O_CREAT|O_APPEND, 0644) = -1 ENOENT (No such file or directory)
rt_sigprocmask(SIG_BLOCK, [INT QUIT ALRM TERM CHLD], [], 8) = 0
pselect6(1, [0], NULL, NULL, {0, 0}, {[], 8}) = 0 (Timeout)
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
write(1, "220 mh1.bi.corp.testmh.ch Cyrus "..., 85) = 85
rt_sigprocmask(SIG_BLOCK, [INT QUIT ALRM TERM CHLD], [], 8) = 0
pselect6(1, [0], NULL, NULL, {360, 0}, {[], 8}) = 1 (in [0], left {359, 999996919})
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
read(0, "LHLO mh1.bi.corp.testmh.ch\r\n", 4096) = 28
rt_sigprocmask(SIG_BLOCK, [INT QUIT ALRM TERM CHLD], [], 8) = 0
pselect6(1, [0], NULL, NULL, {0, 0}, {[], 8}) = 0 (Timeout)
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
write(1, "250-mh1.bi.corp.testmh.ch\r\n250-8"..., 128) = 128
rt_sigprocmask(SIG_BLOCK, [INT QUIT ALRM TERM CHLD], [], 8) = 0
pselect6(1, [0], NULL, NULL, {360, 0}, {[], 8}) = 1 (in [0], left {359, 999997217})
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
read(0, "MAIL FROM:<mh1@testmh.ch> SIZE=2"..., 4096) = 83
open("/var/lib/imap/msg/shutdown", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/var/lib/imap/msg/shutdown", O_RDONLY) = -1 ENOENT (No such file or directory)
fcntl(5, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
fstat(5, {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
stat("/var/lib/imap/mailboxes.db", {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
fcntl(5, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
open("/var/lib/imap/volatile/lock/s/user/user1.lock", O_RDWR|O_CREAT|O_TRUNC, 0666) = 11
fcntl(11, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
fcntl(5, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
fstat(5, {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
stat("/var/lib/imap/mailboxes.db", {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
fcntl(5, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
open("/var/spool/imap/s/user/user1/cyrus.index", O_RDWR) = 12
fstat(12, {st_mode=S_IFREG|0600, st_size=12128, ...}) = 0
mmap(NULL, 24576, PROT_READ, MAP_SHARED, 12, 0) = 0x7f22146b6000
fcntl(12, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
stat("/var/spool/imap/s/user/user1/cyrus.header", {st_mode=S_IFREG|0600, st_size=234, ...}) = 0
open("/var/spool/imap/s/user/user1/cyrus.header", O_RDONLY) = 13
fstat(13, {st_mode=S_IFREG|0600, st_size=234, ...}) = 0
mmap(NULL, 234, PROT_READ, MAP_SHARED, 13, 0) = 0x7f22146b5000
munmap(0x7f22146b5000, 234)             = 0
open("/var/lib/imap/quota/s/user.user1", O_RDWR) = 14
fstat(14, {st_mode=S_IFREG|0600, st_size=20, ...}) = 0
mmap(NULL, 20, PROT_READ, MAP_SHARED, 14, 0) = 0x7f22146b5000
munmap(0x7f22146b5000, 20)              = 0
close(14)                               = 0
fcntl(12, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
close(13)                               = 0
close(12)                               = 0
munmap(0x7f22146b6000, 24576)           = 0
close(11)                               = 0
open("/var/lib/imap/msg/shutdown", O_RDONLY) = -1 ENOENT (No such file or directory)
fcntl(5, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
fstat(5, {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
stat("/var/lib/imap/mailboxes.db", {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
fcntl(5, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
open("/tmp/cyrus_tmpfile_JZTgCC", O_RDWR|O_CREAT|O_EXCL, 0600) = 11
unlink("/tmp/cyrus_tmpfile_JZTgCC")     = 0
fcntl(11, F_GETFL)                      = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(11, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f22146bb000
lseek(11, 0, SEEK_CUR)                  = 0
open("/etc/localtime", O_RDONLY)        = 12
fstat(12, {st_mode=S_IFREG|0644, st_size=1892, ...}) = 0
fstat(12, {st_mode=S_IFREG|0644, st_size=1892, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f22146ba000
read(12, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0\0\0\0"..., 4096) = 1892
lseek(12, -1217, SEEK_CUR)              = 675
read(12, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\6\0\0\0\6\0\0\0\0"..., 4096) = 1217
close(12)                               = 0
munmap(0x7f22146ba000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, [INT QUIT ALRM TERM CHLD], [], 8) = 0
pselect6(1, [0], NULL, NULL, {0, 0}, {[], 8}) = 0 (Timeout)
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
write(1, "250 2.1.0 ok\r\n250 2.1.5 ok\r\n354 "..., 42) = 42
rt_sigprocmask(SIG_BLOCK, [INT QUIT ALRM TERM CHLD], [], 8) = 0
pselect6(1, [0], NULL, NULL, {360, 0}, {[], 8}) = 1 (in [0], left {359, 999997145})
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
read(0, "Received: from ns1.testmh.ch (mx"..., 4096) = 2764
write(11, "Return-Path: <mh1@testmh.ch>\r\nRe"..., 2980) = 2980
fstat(11, {st_mode=S_IFREG|0600, st_size=2980, ...}) = 0
fcntl(5, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
fstat(5, {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
stat("/var/lib/imap/mailboxes.db", {st_mode=S_IFREG|0600, st_size=22284, ...}) = 0
fcntl(5, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0xa7a975b7} ---
+++ killed by SIGSEGV +++