Not receiving email from trusted partner.

I check email on the xfinity website.  I have regularly received email from this sender for many years.

@user_immp5z,,

Thanks letting us know. I can definitely understand the importance of receiving those emails from business associates. I’m sorry to learn that you’re not receiving your associate’s mail, especially after years of trouble‑free delivery. We are the right team of experts to assist with social media. We can help get this moving. In researching this error message further, I am seeing that this is usually a temporary deferral by the receiving mail system. It’s not a block; it usually clears once the sender’s system slows, retries, reduces connection bursts, or reputation signals improve. While it’s active, messages may be delayed and then delivered later automatically. How does this sound so far?

Thank you for your response.