550 Authentication turned on in your email client

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550 Authentication turned on in your email client

Postby SWFuIFRob21wc2V0dA » Sat, 24 Jun 2006 23:59:01 GMT

Hi,

Please help as I am new to this and have been dropped in the deep end with 
this problem...

All users cannot receive SMTP mail and any messages sent to any email 
address get a NDR which has the message "550 Authentication turned on in your 
email client" as the reason.

We are able to send and receive internally, and send externally.

Our set up is that the MX records point to an online filtering service 
(emailsystems.com) and they then forward mail direct to our server. Mail is 
getting to them and being sent, but coming back as failed with the NDR as 
described.

I have run through our exchange setting with them and they match their own 
email servers (and I have not changed them). We had a problem with our domain 
host which is now resolved, but in the process of getting that sorted out, 
something else has gone wrong. The DNS records are showing as correct with 
static IP's where appropriate.

The server is set up only to receive mail from a specified range of IP 
addresses (for email systems) and does not need authentication for delivery 
of mail to it.

Have i missed another built in security to SBS2003? 

I have re-run the email wizard and rebooted without success.

Any help greatly appreciated.

Ian


RE: 550 Authentication turned on in your email client

Postby v-chacez » Tue, 27 Jun 2006 13:41:48 GMT

Hi Ian,

Thank you for posting here.

According to your description, I understand you can not receive emails from 
external. And the sender encountered NDR 550. If I'm off based, please feel 
free to let me know.

First I suggest you contact emailsystems.com to verify the configuration is 
correct.

Can you provide the info of NDR word for word?

From your post, it seems the configuration of exchange is correct.

Test 1. Please perform the following steps to narrow down this issue.

From internet on a WS command prompt type Telnet <IP address of exchange 
server> 25 and see if you get a connection.
For more information, please refer to the following article:
 
XFOR: Telnet to Port 25 of IMC to Test IMC Communication:
 http://www.**--****.com/ 


Test 2. The firewall may cause the problem. You can check your settings by 
the following article:

312415 XADM: Some Domains Send NDRs to an Exchange 2000 Server That Runs
 http://www.**--****.com/ 

Test 3. The problem may be caused by AntiVirus software on the Exchange 
server. I suggest you temporarily disable the Anti-virus software and the 
related 
services, and reboot the server, and then test if the problem occurs. 

For your information, you can read the following Microsoft Knowledge Base 
article, and make sure you configured your Anti-Virus correctly.

 
328841 XADM: Exchange and Antivirus Software
< http://www.**--****.com/ ;


Please let me know the results, I look forward to hearing from you.

Have a nice day!




Best Regards,

Chace Zhang (MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
This newsgroup only focuses on SBS technical issues. If you have issues 
regarding other Microsoft products, you'd better post in the corresponding 
newsgroups so that they can be resolved in an efficient and timely manner. 
You can locate the newsgroup here: 
 http://www.**--****.com/ 

When opening a new thread via the web interface, we recommend you check the 
"Notify me of replies" box to receive e-mail notifications when there are 
any updates in your thread. When responding to posts via your newsreader, 
please "Reply to Group" so that others may learn and benefit from your 
issue.

Microsoft engineers can only focus on one issue per thread. Although we 
provide other information for your reference, we recommend you post 
different incidents in different threads to keep the thread clean. In doing 
so, it will ensure your issues are resolved in a timely manner. 

For urgent issues, you may want to contact Microsoft CSS directly. Please 
check  http://www.**--****.com/  for regional support phone numbers.

Any input or comments in this thread are highly appreciated.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.


RE: 550 Authentication turned on in your email client

Postby SWFuIFRob21wc2V0dA » Tue, 27 Jun 2006 17:21:02 GMT

i Chace,

Thank you for your assistance.

In response:
The 550 NDR is/was correct, this was resolved by emailsystems pointing mail
directly to the IP address rather than the hostname - so there is a DNS issue
which is being resolved.

Otherwise the set up they have is correct. They have telnetted to the server
on 25 and can get a response, but the server is refusing mail. I have allowed
lists of IP addresses as there will only be specific addresses that mail will
come from (ie email systems) and I have double checked those that I can find.
I am almost certain there is somewhere else on the server / exchange that has
a option for these 'white' IP's that I have missed checking. Because of teh
problems associated with the above DNS issue, I made some changes to these
lists, but think I may have found one that i now cannot.
The places I know about are:
Exchange/Gloabl Settings/Message Delivery/Properties/Connection
Filtering/Global Accept
Default SMTP Virtual Server Properties/Access/Connection Control

Are you aware of anywhere else that I may have missed??

Any help appreciated.

Thanks
Ian

"chace zhang" wrote:


RE: 550 Authentication turned on in your email client

Postby v-chacez » Tue, 27 Jun 2006 18:34:21 GMT

i Ian,


Thank you for your reply.

To clarify this situation, please help me collect the following info:

How did emailsystems.com deliver messages to your exchange server? POP3
connector or SMTP ?
If you use POP3 connector to download emails from ISP, please refer to the
following article to troubleshooting this issue:
How to troubleshoot the POP3 Connector in Windows Small Business Server 2003

http://support.microsoft.com/?id=275575

The POP3 Connector May Not Deliver Mail to Users

http://support.microsoft.com/?id=325464

I still need the detailed NDR.

Based on my experience, Theerror code can also occur when the "Anonymous
access" check box has been disalbed. Please check the following these
steps:

1). Click "Start", click "Programs", click "Microsoft Exchange", then click
"System Manager".
2). In the Exchange System Manager, expand the "Servers" container.
3). Expand the container that is for your Exchange server.
4). Expand the "Protocols" container.
5). Expand the "SMTP" container.
6). Right-click the SMTP virtual server object, and then click "Properties".
7). Click the "Access" tab.
8). Click the "Authentication" button.
9). Click to select the "Anonymous access" check box.
10). Click "OK" twice.
11). Right-click the "SMTP virtual server", and then click "Stop".
12). Right-click the "SMTP virtual server", and then click "Start".
13). Click "Start", click "Programs", click "Administrative Tools", then
click "Services" to start the Services management console.
14). Restart both the "Simple Mail Transport Protocol (SMTP)" service and
the "Microsoft Exchange Routing Engine" service.

Test if the problem occurs.

4. In addition, the problem may be caused by the Anti-virus software in
sometimes. Did you temporarily remove or disable anti-virus software? I
suggest you read the following Microsoft Knowledge
Base article, and make sure you configured your Anti-Virus correctly.

328841 XADM: Exchange and Antivirus Software
<http://support.microsoft.com/?id=328841>

5. Also, the firewall may cause the problem. Please refer to the following
KB article.

275575 XCON: Client SMTP Authentication Is Enabled, But Relay Does Not Work,
http://support.microsoft.com/?id=275575

274638 Troubleshooting NDRs with 5.7.1 and 5.7.3 error codes
http://support.microsoft.com/?id=274638

Hope it helps.

If you have any questions on it, please feel free to let me know.



Best Regards,

Chace Zhang (MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
This newsgroup only focuses on SBS technical issues. If you have issues
regarding other Microsoft products, you'd better post in the corresponding
newsgroups so that they can be resolved in an efficient and timely manner.
You can locate the newsgroup here:
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx

When opening a new thread via the web interface, we recommend you check the
"Notify me of replies" box to receive e-mail notifications when there are
any updates in your thread. When responding to posts via your newsreader,
please "Reply to Group" so that others may learn and benefit from your
issue.

Microsoft engineers can only focus on one issue per thread. Although we
provide other information for your reference, we recommend you post
different incidents in different threads to

RE: 550 Authentication turned on in your email client

Postby SWFuIFRob21wc2V0dA » Tue, 27 Jun 2006 18:43:02 GMT

PDATE - I retyped all the 'white' IP addresses into the system and this
appears to have fixed the problem. Not sure why but as we are now getting
mail I will look into this as a priority


"Ian Thompsett" wrote:


RE: 550 Authentication turned on in your email client

Postby v-chacez » Wed, 28 Jun 2006 19:22:33 GMT

Hi 

Thank you for posting back.

I'm glad to hear this issue was resolved. If you would, pleas share your 
experience on this question, it would help other users encountering the 
same question.

I appreciate your time and cooperation. I look forward to hearing from you.

Thanks for your time.


Best Regards,

Chace Zhang (MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
This newsgroup only focuses on SBS technical issues. If you have issues 
regarding other Microsoft products, you'd better post in the corresponding 
newsgroups so that they can be resolved in an efficient and timely manner. 
You can locate the newsgroup here: 
 http://www.**--****.com/ 

When opening a new thread via the web interface, we recommend you check the 
"Notify me of replies" box to receive e-mail notifications when there are 
any updates in your thread. When responding to posts via your newsreader, 
please "Reply to Group" so that others may learn and benefit from your 
issue.

Microsoft engineers can only focus on one issue per thread. Although we 
provide other information for your reference, we recommend you post 
different incidents in different threads to keep the thread clean. In doing 
so, it will ensure your issues are resolved in a timely manner. 

For urgent issues, you may want to contact Microsoft CSS directly. Please 
check  http://www.**--****.com/  for regional support phone numbers.

Any input or comments in this thread are highly appreciated.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.


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