There are a number of scams related to domain renewals, some try to trick you into renewing with a different company while others try to trick you into registering domains you don't require (and usually at inflated prices). The emails from ygnetwork-ltd.com try to suggest that nother company is about to register domains with your name in them, this is false.
Here's a copy of what the scam email looks like:
Conetix suggests that you read all emails carefully and if the provider is known to be a scammer (as is the case for ygnetwork-ltd.com), delete them immediately.
Please feel free to forward your corresponence through to Conetix if you believe it's a scam and one of our support staff will help evaluate it for you.