Memory leak?

Hi,

my tmda-inject called via qmail-queue crashes when trying to send an 
email with a 14MB attachment due to "out of memory". In the process, 
tmda-inject allocates the grand total of 148MB. That seems a bit 
excessive to me for an email of 14MB. Could there be something wrong 
with my configuration or is it a memory leak?


output from "free -s 1" before and after crash:
===============================================
              total       used       free     shared    buffers     cached
Mem:        515600     448496      67104          0      14504     110724
-/+ buffers/cache:     323268     192332
Swap:      1048568        248    1048320

              total       used       free     shared    buffers     cached
Mem:        515600     300560     215040          0      12140      82188
-/+ buffers/cache:     206232     309368
Swap:      1048568        248    1048320


log in /var/log/qmail/smtpd/current:
====================================
2007-01-31 17:31:50.591071500 Traceback (most recent call last):
2007-01-31 17:31:50.591195500   File "/usr/bin/tmda-inject", line 461, in ?
2007-01-31 17:31:50.591423500     main()
2007-01-31 17:31:50.591473500   File "/usr/bin/tmda-inject", line 452, 
in main
2007-01-31 17:31:50.591654500     log_msg)
2007-01-31 17:31:50.591702500   File "/usr/bin/tmda-inject", line 285, 
in inject_message
2007-01-31 17:31:50.591822500     Util.sendmail(Util.msg_as_string(msg, 
78), to_address, envelope_sender)
2007-01-31 17:31:50.591866500   File 
"/usr/lib/python2.3/site-packages/TMDA/Util.py", line 564, in msg_as_string
2007-01-31 17:31:50.592068500     g.flatten(msg, unixfrom=unixfrom)
2007-01-31 17:31:50.592111500   File 
"/usr/lib/python2.3/site-packages/TMDA/pythonlib/email/generator.py", 
line 84, in flatten
2007-01-31 17:31:50.592164500     self._write(msg)
2007-01-31 17:31:50.592205500   File 
"/usr/lib/python2.3/site-packages/TMDA/pythonlib/email/generator.py", 
line 119, in _write
2007-01-31 17:31:50.592264500     self._fp.write(sfp.getvalue())
2007-01-31 17:31:50.592346500 MemoryError: out of memory


outgoing filter file:
=====================
to *@=mydomain.com bare
to-file ~/.tmda/lists/whitelist tag envelope dated=11d from bare
to-file ~/.tmda/lists/whitelist_confirmed tag envelope dated=11d from bare
to-file ~/.tmda/lists/whitelist_outgoing tag envelope dated=11d from bare
to * tag envelope dated=11d reply-to dated from bare=append


I am using tdma-inject version 1.1.9.

I would appreciate any comments on this.

Regards,
Arik