Anyone Having a Problem With My Site

If there is anyone out there who is having trouble with my web site I would appreciate a heads up on this. I received a kick back e-mail about someone who signed my mailing list that their address was not accepted. I am new to this stuff so if anyone can enlighten me it would be appreciated. In the meantime you may be assured that if something comes up I will try to fix it and I will reply to anyone that signs up wherever. Thanks Brandy