E-mail address not valid?

I got this shortly after sending out an e-mail:

MAILER-DAEMON@as.christophersanford.com
to rsherid@gmail.com
date Tue, Aug 18, 2009 at 12:53 PM
subject failure notice
mailed-by as.christophersanford.com
hide details 12:53 PM (1 minute ago)
Hi. This is the qmail-send program at as.christophersanford.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<info@157lounge.com>:
This address no longer accepts mail.

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So, it didn't go through? I got the e-mail off a business card.