>Thanks for the reply.
>
>My lines already contains CRLF. So it doesn't help.
>
>Also, I have done some test with RFC 821 (that also use SMTP) method and the same message is sent correctly.
>
>See http://www.codeproject.com/csharp/sendmailcsharp.asp for details on the RFC 821 method.
>

Hmm..I'll have to look at that. Just another idea - do you happen to have any lines that are starting with a period "."?