Solved

message bounced in exchange / #500 5.3.3 Unrecognized command ##

Posted on 2010-09-03
9
5,956 Views
Last Modified: 2012-05-10
an external user rcvd an NDR and i cant put my finger on why.
copy of NDR below
any ideas?

EXCHANGE.ourcompany.org rejected your message to the following e-mail addresses:
 
executiveassistant@ourcompany.org (executiveassistant@ourcompany.org)
 
EXCHANGE.ourcompany.org gave this error:
Unrecognized command
 
The recipient's e-mail system can't process this message. Please try resending the message later.
 
 
 
 
 
 
 
Diagnostic information for administrators:
 
Generating server: SERVER01.sender.local
 
executiveassistant@ourcompany.org
EXCHANGE.ourcompany.org #500 5.3.3 Unrecognized command ##
 
Original message headers:
 
Received: from SERVER01.sender.local ([fe80::88d9:a57e:832a:52d1]) by
 SERVER01.sender.local ([fe80::88d9:a57e:832a:52d1%11]) with mapi;
 Thu, 2 Sep 2010 16:24:39 -0700
From: Marianne <Marianne@sender.com>
To: "executiveassistant@ourcompany.org"
        <executiveassistant@ourcompany.org>
Subject: FW: Board Development Committee meeting on Tuesday, September 14,
 2010 at noon
Thread-Topic: Board Development Committee meeting on Tuesday, September 14,
 2010 at noon
Thread-Index: ActFbr6DgtmPHQPJSw6Ojjsad5nu0wEuBu4AAACHBOAAIaFN4AARnBbQ
Date: Thu, 2 Sep 2010 23:24:38 +0000
Message-ID: <C5BA8D71479D194A98702802D130AF6F09E850@SERVER01.sender.local>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
0
Comment
Question by:-pH
  • 3
  • 2
  • 2
  • +2
9 Comments
 

Expert Comment

by:chakrikolla
ID: 33597930
fdajajaja
0
 
LVL 15

Expert Comment

by:Dave_AND
ID: 33597998
Quite hard to say without knowing a bit more info, this can be caused by mail scanners, firewalls etc

What do you have between their server and yours?
0
 
LVL 2

Expert Comment

by:roarkinc
ID: 33598001
are you sure this was a legitimet email?  that error is usually only when the data sent to your server is invalid, like someone sending and email through telnet and they used a backspace or delete key which are invalid characters.
0
 
LVL 53

Expert Comment

by:Will Szymkowski
ID: 33598018
The NDR 5.3.3 usually indicates that the Remote server has insufficient disk space to hold email.  I would check the SMTP Log.
0
How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

 
LVL 15

Expert Comment

by:Dave_AND
ID: 33598038
You will usually get "Insufficient resources" if your drives are full.. or at least you do on Exchange 2007
0
 
LVL 1

Author Comment

by:-pH
ID: 33598090
it was a legit email, from somebody who has emailed our domain before.
disk space is fine.
there is an asa5510 and a cisco 3560 core switch between interwebs and our exchange server.
0
 
LVL 2

Accepted Solution

by:
roarkinc earned 250 total points
ID: 33598092
0
 
LVL 15

Assisted Solution

by:Dave_AND
Dave_AND earned 250 total points
ID: 33598170
You can look here: http://objectmix.com/microsoft-exchange/278383-no-esmtp-response-ehlo-test-com-500-5-3-3-unrecognized-command.html it has some specific posts about Pix and 5.3.3 errors.
0
 
LVL 1

Author Comment

by:-pH
ID: 33598830
thanks, i applied the no fixup on my asa and will further test
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
In this video we show how to create a Contact in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Contact ta…
In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Mail Flow…

757 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

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now