Files of more than 20KB are not sent as email body   

I am trying to send the mails to different users and have a set of random files generated using openssl. Now I am trying to add the file contents as the email body. Files of 20KB or less are sent in the email body, but files with size more than 20KB are not being sent. The mails are sent with empty body.

Has anybody tried this or has any clue why is it so?

I investigated and it seems it is an issue with Notes. I modified the code to call save() method and I got following error when sending 32k message
Exception in thread "Thread-0" Traceback (innermost last):
(no code object) at line 0
at lotus.domino.local.Document.Nsend(Native Method)
at lotus.domino.local.Document.send(Unknown Source)
at lotus.domino.local.Document.send(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)

lotus.domino.NotesException: NotesException: Notes error: Field is too large (32
K) or View's column & selection formulas are too large

IBM support pages have info about this:
http://www-01.ibm.com/support/docview.wss?rs=475&context=SSKTWP&uid=swg21087474&loc=en_US&cs=utf-8&lang=en.

Workaround for this seems to be to change body data type to from Text to Rich Text.
I will test it and if it works I publish steps to correct the problem to NotesCLI space.