Microsoft KB Archive/300580

= XCON: Cannot Send E-Mail Messages to a Growing List of Domains =

PSS ID Number: 300580

Article Last Modified on 4/8/2004

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The information in this article applies to:


 * Microsoft Exchange 2000 Server

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This article was previously published under Q300580



SYMPTOMS
When you try to send e-mail messages to recipients from certain domains, you may experience the following behaviors:
 * The e-mail message is not delivered and you receive a non-delivery report (NDR) that contains error code 5.0.0.
 * The number of domains that you cannot send e-mail messages to increases.
 * You notice one or more of the following events in the application log of the Event Viewer: Date:

Source: MSExchangeTransport

Time:

Category: (3)

Type: Warning

Event ID: 4001

User: N/A

Computer:

Description:

Message delivery to the remote domain 'mail.example.com' failed. The error message is 'An SMTP protocol error occurred'. , MAIL, 553 5.3.0 Mail from  refused, see http://mail-abuse.org/rbl+/lookup.cgi? Data: 0000: d7 02 04 c0 Date:

Source: MSExchangeTransport

Time:

Category: (3)

Type: Warning

Event ID: 4001

User: N/A

Computer:

Description: Message delivery to the remote domain 'mail.example.com' failed. The error message is 'An SMTP protocol error occurred'. , MAIL, 550 Mail from dial-up rejected; see http://mail-abuse.org/dul/enduser.htm or contact Example helpdesk at. Data: 0000: d7 02 04 c0 Date:

Source: MSExchangeTransport

Time:

Category: (3)

Type: Warning

Event ID: 4001

User: N/A

Computer:

Description:

Message delivery to the remote domain 'mail.example.com' failed. The error message is 'An SMTP protocol error occurred'. , MAIL, 550 5.7.1 Mail from  refused by blackhole site dialups.mail-abuse.org. Data: 0000: d7 02 04 c0 Date:

Source: MSExchangeTransport

Time:

Category: (3)

Type: Warning

Event ID: 4001

User: N/A

Computer:

Description:

Message delivery to the remote domain 'mail.example.com' failed. The error message is 'An SMTP protocol error occurred'. , RCPT, 554 Service unavailable; [ ] blocked using dialups.mail-abuse.org. Data: 0000: d7 02 04 c0



CAUSE
This behavior may occur when your Microsoft Exchange 2000 Server computer is listed as a messaging server that sends unsolicited commercial e-mail (UCE, also known as spam). This behavior may occur if your Exchange 2000 computer is an open mail relay.



RESOLUTION
To resolve this issue, follow these steps:  Verify that the Exchange 2000 computer is not an open mail relay. For additional information about how to do this, click the following article numbers to view the articles in the Microsoft Knowledge Base:

310380 HOW TO: Prevent Exchange 2000 from being used as a mail relay in Windows 2000

310356 HOW TO: Prevent mail relay in the IIS 5.0 SMTP server in Windows 2000

 Determine whether your Exchange 2000 computer is on an AOL unsolicited commercial e-mail list. For information about how to do this, contact AOL. Remove the Exchange 2000 computer from the AOL unsolicited commercial e-mail list. For information about how to do this, contact AOL. Determine whether the Exchange 2000 computer is on the Mail-Abuse.org list of organizations that send unsolicited commercial e-mail. To do this, follow these steps:  Visit the following Web site:

http://mail-abuse.org/cgi-bin/lookup

 On the MAPS lookup page, type the publicly-accessible IP address of the Exchange 2000 computer, and then press ENTER.

Note MAPS stands for Mail Abuse Prevention System.</li></ol> </li> Remove the Exchange 2000 computer from the Mail-Abuse.org list. To do this, follow these steps: <ol style="list-style-type: lower-alpha;"> Visit the following Web site:

http://work-rss.mail-abuse.org/cgi-bin/nph-rss-remove

</li> Type the publicly-accessible IP address of the Exchange 2000 computer in the '''You can search this index. Type the keyword(s) you want to search for''' box, and then press ENTER.</li> Follow any additional instructions to complete the removal of the Exchange 2000 computer from the list.</li></ol> </li> Remove the Exchange 2000 computer from any open relay block list that is not covered by Mail-Abuse.org. OpenRBL.org maintains a query engine that links to over three dozen open relay block lists. Each list maintains a separate list of open relay e-mail servers, so your server may show up on some, but not all, lists. <ol style="list-style-type: lower-alpha;"> Visit the following Web site and query on your server's IP address or Fully Qualified Domain Name (FQDN):

http://openrbl.org/

</li> If your server is on any of the open relay block lists, you will receive a link to that specific list provider's Web site.</li> The Web site for that list provider generally provides instructions on how to remove your server from that.</li></ol>

Note Perform the list removal process for every list that your server appears on. Removing your server from one list does not guarantee that it will be removed from all lists.</li></ol>

<div class="moreinformation_section">

MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

257538 XFOR: How to obtain additional information from Internet mail or unsolicited commercial e-mail

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The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Additional query words: orb

Keywords: kbprb KB300580

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch

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