Windows mailslots

I apologize if I post the question to the wrong group.

In the on-line documentation
(http://msdn.microsoft.com/library/de...-us/ipc/base/a
bout_mailslots.asp)
Microsoft says that Windows mailslots allow for sending messages without
particular size-limit. There is no broadcasting with message over 425 bytes,
but according to documentation, messages bigger than 425 bytes can still be
transported from one mail-slot to another. I needed something like that
(simple & convenient ) for my application. So, tried to implement mailslots
but to my disappointment, I was unable to send messages over 425 bytes at
all. I do not see any particular reason for this, except bug in
documentation. My mailslot server opens mailslot with no limit.

Does anyone can comment this ?
Thank you very much.
Marek