I'm having some problems with my email, specifically sending a email to charlie@bonfirecoffee.com from my address, marcus@blendwebmarketing.com. 

The interesting part of this is that I can send no problem to the charlie@bonfirecoffee.com email from gmail, icloud and Charlie is receiving emails from other people as well. It seems that this account is the only one that is not sending properly. It seems that this email account is the only one that can't reach this address. 

Can you please help me troubleshoot this? Thank you!

Here is the error I am getting: 

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. 

charlie@bonfirecoffee.com INVALID_ADDRESS, ERROR_CODE :550, ERROR_CODE :5.1.1 <charlie@bonfirecoffee.com> Recipient not found.  <http://x.co/irbounce>

Received:from mail.zoho.com by mx.zohomail.com

with SMTP id 14919600551742.2311398231108797; Tue, 11 Apr 2017 18:20:55 -0700 (PDT)

Message-ID:<15b5fbfc584.11edf09cc152166.865253604215058607@blendwebmarketing.com>

Date:Tue, 11 Apr 2017 19:20:55 -0600

From:marcus <marcus@blendwebmarketing.com>

User-Agent:Zoho Mail

To:"charlie" <charlie@bonfirecoffee.com>

Subject:Test 20

Content-Type:multipart/alternative; 

boundary="----=_Part_476490_609595988.1491960055172"