E-mail problems

[xbxDaniel]

I haven't received any messages from I-mockery.net when I'm supposed to get an e-mail when there's an update on a thread I'm watching, but I just found a message from Mockery saying that all these e-mails are being bounced back at him and flooded his account. I've checked all my filters and his messages should be getting through. I'm using Mozilla Thunderbird. Is there anyone with some advice out there?