Until now it has not been forwarded yet Is this sentence grammatically correct?
It's a bit clumsy. It would be better like this: "As of now, it
has not yet been forwarded".
Answer
No, in the present form the 'yet' is redundant. To be correct
the 'until now' or the 'yet' should be between 'not' and
'been'.
Either: "It has not until now been forwarded" or "It has not yet
been forwarded".