Please, refer to this mail
(http://grokbase.com/post/2009/07/15/spamassassin-plugin-doesn-t-send-full-mail-to-spamd/JCzoiz1UQ8ZKEInNXZQu0ndhk54)
for some (confused) background informations.
qpsmtpd spamassassin plugin is here:
http://github.com/abh/qpsmtpd/blob/7efee7b1af632fc1caf1a03a00b4d36790f25c1d/plugins/spamassassin
This plugin sends the full mail to spamd, but spamd reads only the
headers and wait for 300 seconds for the body (already sent by
qpsmtpd).
spamd strace:
read(6, SYMBOLS SPAMC/1.3\r\nUser: qpsmtpd\r\n\r\nX-Envelope-From:
perceptua...@studguard.de\r\nReceived: from c2.nethesis.it (HELO
pc-federico) (77.238.14.78)\r\nby nethesis.it (qpsmtpd/0.40) with
SMTP; Wed, 15 Jul 2009 18:17:09 +0200\r\nDate: Tue, 14 Jul 2009
19:00:57 +0700\r\nFrom: \Pat Bright\
forbidding...@sparkus.com\r\nSubject: Get a degree with no
problems.\r\nTo: cristian.man...@nethesis.it\r\nMessage-ID:
000d01ca047a$bf729840$6400a...@forbiddingsz3\r\nMIME-Version:
1.0\r\nX-MIMEOLE: Produced By Microsoft MimeOLE
V6.0.6001.18049\r\nX-Mailer: Microsoft Windows Mail
6.0.6001.18000\r\nContent-type: text/plain; format=flowed;
charset=iso-8859-1; reply-type=original\r\nContent-transfer-encoding:
7bit\r\nX-Priority: 3\r\nX-MSMail-priority: Normal\r\n\r\n, 4096) =
733
SA 3.2.5 on Centos 4.6, perl 5.8.5.
If I shorten the first line of the body, spamd reads the whole mail
(see mail referenced at the beginning for a strace).
Here is also a gdb backtrace of spamd waiting in read():
#0 0x009d17a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1 0x00cff673 in __read_nocancel () from /lib/tls/libpthread.so.0
#2 0x00cbb09f in PerlIOUnix_read () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#3 0x00cba8b1 in Perl_PerlIO_read () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#4 0x00cbc439 in PerlIOBuf_fill () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#5 0x00cb9a43 in Perl_PerlIO_fill () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#6 0x00cba803 in PerlIOBase_read () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#7 0x00cbc513 in PerlIOBuf_read () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#8 0x00cba8b1 in Perl_PerlIO_read () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#9 0x00cbdb14 in PerlIO_getc () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#10 0x00c64e6b in Perl_sv_gets () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#11 0x00c48aa4 in Perl_do_readline () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#12 0x00c49877 in Perl_pp_readline () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#13 0x00c3016d in Perl_runops_debug () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#14 0x00be1c91 in perl_run () from
/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so
#15 0x080493b2 in main ()
I'm looking for a way to isolate the source of the problem: perl, a
perl module, spamd, spamassassin, what else?
Thanks.
--
Ciao,
Filippo
