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9.1

SMTP 554 Client host rejected

Asked by f3tpadmin in Domain Name Service (DNS), Exchange Email Server, Simple Mail Transfer Protocol (SMTP)

Tags: exchange 2003 smtp dns

Hello all,

I am encountering an email issue with one of our employees. It is when he sends an email to a company (lets call it xyz) He has tried multiple contacts in the company (we know they are accurate). However the emails bounce back immediately with the following error.

Any thoughts? I had our ISP change our pointer record so a reverse lookup is now the correct dns entry...

View the Solution FREE for 30 Days

         
             Your message did not reach some or all of the intended recipients.
 
      Subject:	Our Employee - New contact information
      Sent:	9/3/2009 1:19 PM
 
The following recipient(s) cannot be reached:
 
      first.lastname@companyxyz.com on 9/3/2009 1:19 PM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <mail.mycompany.com #5.5.0 smtp;554 <75-144-198-237-Connecticut.hfc.comcastbusiness.net[75.144.198.237]>: Client host rejected: Use your providers mailgateway 20060811>

20100315-EE-VQP-143 - Hierarchy / EE_QW_3_20080625

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SMTP 554 Client host rejected

Asked by f3tpadmin in Domain Name Service (DNS), Exchange Email Server, Simple Mail Transfer Protocol (SMTP)

Tags: exchange 2003 smtp dns

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