[Zope] error with simple python script loop

[Christian Steinhauer]

>>
>>http://www.blunck.se/iehttpheaders/iehttpheaders.html
>>

What a nice tool. Now more debugging with some interesting results. 

###
for i in range(2):
  context.MailHost.send('bodytext', "rec at mail.com", "sender at mail.com",
'subj'+str(i))
###
This script produces: HTTP/1.1 204 No Content

###
for i in range(25):
  subj = str(i+1) + ' range python'
  context.MailHost.send('Range Python', "rec at mail.com", "sender at mail.com",
subj)
###
This script produces: HTTP/1.1 204 No Content

###
for i in range(2):
  context.MailHost.send('bodytext', "rec at mail.com", "sender at mail.com",
'subj'+str(i))
  context.emailcounter.write(str(int(context.emailcounter())+1))
###
This script produces: HTTP/1.1 200 OK

The third script has no output on the screen too but works fine and gives
HTTP Code 200 back. Can you tell me why he do this?