My emails to you are being returned as follows....

Your message cannot be delivered to the following recipients:

Recipient address: markeng@communicomm.com
Reason: Remote SMTP server has rejected address
Diagnostic code: smtp;550 unknown user
Remote system: dns;mail.communicomm.com (TCP|167.206.5.78|10592|24.143.0.41|25) (communicomm.com [IMail 8.11 74203-38] NT-ESMTP Server X1)