Problem with cyrillic characters in CDONTS.NewMail

I have a problem. I am using html form to send a message to mail box.
I open asp page by submitting the form data.
My html page uses Unicode (UTF-8) encoding to display russian and ukrainian symbols correctly.
When I write cyrillic symbols in the body of the message I receive ?????'?
in the mail box.
I use Lotus Domino server as our mail server and the Codepage 1251 (Cyrillic).
Does anybody know how to overcome the problem?
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mailformat=0  'i.e. mime format
BodyFormat = 0 'i.e html

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