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I have configured s3 bucket with event configuration to sqs for every object creation. When I try out aws cli command I get the notification correctly. 

When I try using presigned url with curl/postman command, I dont get the sqs notification. **Is this a known issue and are there any work arounds?**
"""Tests for the existence of the specified bucket. Returns the error code
    if the bucket does not exist (200 if the bucket does exist).
    """
    bucket_name = normalize_bucket_name(bucket_name)
    s3_client = aws_stack.connect_to_service('s3')
    try:
        s3_client.head_bucket(Bucket=bucket_name)
    except ClientError as err:
        error_code = err.response.get('Error').get('Code')
        return False, error_code
    return True, 200
def check_content_md5(data, headers):
    actual = md5(strip_chunk_signatures(data))
    expected = headers['Content-MD5']
    try:
        expected = to_str(codecs.encode(base64.b64decode(expected), 'hex'))
    except Exception:
        expected = '__invalid__'
    if actual != expected:
        return error_response('The Content-MD5 you specified was invalid', 'InvalidDigest', status_code=400)
def error_response(message, code, status_code=400):