There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator. #5.5.0 smtp;550 No such user

Posted on 2009-04-01
Last Modified: 2012-05-06
Need some help.  My boss sent an e-mail to a recipient, and got the following bounceback message from System Administrator.  We run Outlook 2007 on Microsoft Exchange 2003.  Not experiencing any other bouncebacks currently

The following recipient(s) cannot be reached: on 4/1/2009 12:53 PM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <myserver.mydomain.priv #5.5.0 smtp;550 No such user (>

Can you help me out with this and what to look for?  Is this on my side or on the recipients side.  I would think it is the recipient's side.  Thanks.
Question by:mbolton1967
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Accepted Solution

AJermo earned 125 total points
ID: 24042224
The message indicates the remote system did not find the recipent listed. This is a problem on the OTHER side.

Assisted Solution

jd_programmer1 earned 125 total points
ID: 24042348

Featured Post

Office 365 Training for Admins - 7 Day Trial

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Unified and professional email signatures help maintain a consistent company brand image to the outside world. This article shows how to create an email signature in Exchange Server 2010 using a transport rule and how to overcome native limitations …
A couple of months ago we ran into an issue that necessitated re-creating our Edge Subscriptions. However, when we attempted to execute the command: New-EdgeSubscription -filename C:\NewEdgeSub_01.xml we received an error indicating that the LDAP se…
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit If you want to manage em…
Suggested Courses

617 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question