qmail Setup

Blake Skinner yellowdog-general@lists.terrasoftsolutions.com
Tue Dec 3 17:58:01 2002


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> If you want to try what Charles suggests in this post, I believe
> the appropriate syntax for strace would be:
>   [root@byteme /root]# strace -p 1234 -ff -o /tmp/qmail-remote.strace
>
> where 1234 is the processID of your qmail-remote process.  Then try
> sending a message and see what is produced in these traces.
>
> I'd be real interested in knowing what you find out.

Ran the trace, had to watch qmail-rspawn instead of remote (remote dies 
nearly instantly). I can't seem to make heads or tails of the dump 
(Fairly new to Linux) so I am attaching the file to the e-mail. Thanks 
again!

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<excerpt>If you want to try what Charles suggests in this post, I
believe

the appropriate syntax for strace would be:

  [root@byteme /root]# strace -p 1234 -ff -o /tmp/qmail-remote.strace


where 1234 is the processID of your qmail-remote process.  Then try

sending a message and see what is produced in these traces.


I'd be real interested in knowing what you find out.

</excerpt>

Ran the trace, had to watch qmail-rspawn instead of remote (remote
dies nearly instantly). I can't seem to make heads or tails of the
dump (Fairly new to Linux) so I am attaching the file to the e-mail.
Thanks again!


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fcntl64(2, F_GETFL)                     = 0x800 (flags O_RDONLY|O_NONBLOCK)
close(0)                                = 0
fcntl64(2, F_DUPFD, 0)                  = 0
close(2)                                = 0
fcntl64(8, F_GETFL)                     = 0x1 (flags O_WRONLY)
close(1)                                = 0
fcntl64(8, F_DUPFD, 1)                  = 1
close(8)                                = 0
fcntl64(1, F_GETFL)                     = 0x1 (flags O_WRONLY)
close(2)                                = -1 EBADF (Bad file descriptor)
fcntl64(1, F_DUPFD, 2)                  = 2
execve("/var/qmail/bin/qmail-remote", ["qmail-remote", "attbi.com", "malice@skmail.homeip.net", "guiyon@attbi.com"], [/* 1 var */]) = 0
uname({sys="Linux", node="localhost.localdomain", ...}) = 0
brk(0)                                  = 0x1001aa4c
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(0x3, 0x7ffff108)                = 0
mmap(NULL, 70055, PROT_READ, MAP_PRIVATE, 3, 0) = 0x30027000
close(3)                                = 0
open("/lib/libresolv.so.2", O_RDONLY)   = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\000"..., 1024) = 1024
fstat64(0x3, 0x7ffff110)                = 0
mmap(0xffcd000, 141756, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xffcd000
mprotect(0xffdc000, 80316, PROT_NONE)   = 0
mmap(0xffdd000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0xffdd000
mmap(0xffed000, 10684, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffed000
close(3)                                = 0
open("/lib/libssl.so.2", O_RDONLY)      = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\304"..., 1024) = 1024
fstat64(0x3, 0x7ffff0f0)                = 0
mmap(0xff79000, 274940, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xff79000
mprotect(0xffa4000, 98812, PROT_NONE)   = 0
mmap(0xffa9000, 73728, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0x20000) = 0xffa9000
mmap(0xffbb000, 4604, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffbb000
close(3)                                = 0
open("/lib/libcrypto.so.2", O_RDONLY)   = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\3\222"..., 1024) = 1024
fstat64(0x3, 0x7ffff0d0)                = 0
mmap(0xfe5e000, 1092588, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xfe5e000
mprotect(0xff33000, 220140, PROT_NONE)  = 0
mmap(0xff3e000, 147456, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0xd0000) = 0xff3e000
mmap(0xff62000, 27628, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xff62000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\2M\34"..., 1024) = 1024
fstat64(0x3, 0x7ffff0b0)                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x30014000
mmap(0xfd01000, 1362744, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xfd01000
mprotect(0xfe1c000, 203576, PROT_NONE)  = 0
mmap(0xfe21000, 163840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x110000) = 0xfe21000
mmap(0xfe49000, 19256, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xfe49000
close(3)                                = 0
munmap(0x30027000, 70055)               = 0
brk(0)                                  = 0x1001aa4c
brk(0x1001aa7c)                         = 0x1001aa7c
brk(0x1001b000)                         = 0x1001b000
rt_sigaction(SIGALRM, {0x1000174c, [], 0}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN}, NULL, 8) = 0
chdir("/var/qmail")                     = 0
open("control/me", O_RDONLY|O_NONBLOCK) = 3
read(3, "skmail.homeip.net\n", 64)      = 18
close(3)                                = 0
open("control/timeoutremote", O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such file or directory)
open("control/timeoutconnect", O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such file or directory)
open("control/helohost", O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such file or directory)
open("control/smtproutes", O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such file or directory)
open("control/tlsclientciphers", O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such file or directory)
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
ioctl(3, 0x8912, 0x7ffffda8)            = 0
ioctl(3, 0x8913, 0x10019910)            = 0
ioctl(3, 0x8915, 0x10019910)            = 0
ioctl(3, 0x8913, 0x10019930)            = 0
ioctl(3, 0x8915, 0x10019930)            = 0
close(3)                                = 0
gettimeofday({1038962085, 362632}, NULL) = 0
getpid()                                = 4896
open("/etc/resolv.conf", O_RDONLY)      = 3
fstat64(0x3, 0x7fffdae8)                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x30015000
read(3, "nameserver 63.240.76.19\nsearch l"..., 4096) = 43
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x30015000, 4096)                = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
connect(3, {sin_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("63.240.76.19")}}, 28) = 0
send(3, "\326\16\1\0\0\1\0\0\0\0\0\0\5attbi\3com\0\0\377\0\1", 27, 0) = 27
gettimeofday({1038962085, 364158}, NULL) = 0
poll([{fd=3, events=POLLIN, revents=POLLIN}], 1, 5000) = 1
recvfrom(3, "\326\16\205\200\0\1\0\4\0\2\0\4\5attbi\3com\0\0\377\0\1"..., 512, 0, {sin_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("63.240.76.19")}}, [16]) = 229
close(3)                                = 0
time(NULL)                              = 1038962085
getpid()                                = 4896
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
connect(3, {sin_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("63.240.76.19")}}, 28) = 0
send(3, "\326\17\1\0\0\1\0\0\0\0\0\0\5attbi\3com\0\0\17\0\1", 27, 0) = 27
gettimeofday({1038962085, 416195}, NULL) = 0
poll([{fd=3, events=POLLIN, revents=POLLIN}], 1, 5000) = 1
recvfrom(3, "\326\17\205\200\0\1\0\1\0\2\0\4\5attbi\3com\0\0\17\0\1"..., 512, 0, {sin_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("63.240.76.19")}}, [16]) = 151
close(3)                                = 0
--- SIGSEGV (Segmentation fault) ---

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------------
Kettering's Observation:
         Logic is an organized way of going wrong with confidence.

Imbesi's Law with Freeman's Extension:
         In order for something to become clean, something else must
         become dirty; but you can get everything dirty without getting
         anything clean.

Political television commercials prove one thing: some candidates
can tell all their good points and qualifications in just 30 seconds.
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<fontfamily><param>Times New Roman</param>------------

Kettering's Observation:

        Logic is an organized way of going wrong with confidence.


Imbesi's Law with Freeman's Extension:

        In order for something to become clean, something else must

        become dirty; but you can get everything dirty without getting

        anything clean.


Political television commercials prove one thing: some candidates

can tell all their good points and qualifications in just 30 seconds.</fontfamily>
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