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NDR only from External addresses #5.5.0 smtp;500 Error code

Posted on 2004-10-06
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Last Modified: 2010-05-18
Hello,

I am receiving the following error code from a group of users when using the email through a distribution list, however I am unsure what the fix is for the NDR, can someone help me please.

From: System Administrator
Sent: 06 October 2004 12:12
To: Vidler, Trevor,(RAMESYS-MH); Lester, Diane,(RAMESYS-MH); Roberts, Jackie,(RAMESYS-MH); Bicknell01, Sharon (RAMESYS-NH); Hoskins, Sylvia,(RAMESYS-MH); Waite, Sue,(RAMESYS-MH); Lish, Mike,(RAMESYS-MH); Bracher, Kathy; Cooper, Linda; Targett, Norman; Hanney, Richard,(RAMESYS-MH); Jenkins, Karen,(RAMESYS-MH); Daniels, Gina,(RAMESYS-MH); Kelly, Paul,(RAMESYS-MH); Rees, Ian,(RAMESYS-MH); Marks, Bob,(RAMESYS-MH); Joyce, Terena,(RAMESYS-MH); Webster, Pauline,(RAMESYS-MH)
Subject: Undeliverable:Primary Care Access Survey 8th October 2004

Your message did not reach some or all of the intended recipients.

      Subject:      Primary Care Access Survey 8th October 2004
      Sent:      06/10/2004 12:12

The following recipient(s) could not be reached:

      Vidler, Trevor,(RAMESYS-MH) on 06/10/2004 12:12
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <mhexc02.MHPCT.xbas.nhs.uk #5.5.0 smtp;500 _l command unrecognized>

      Lester, Diane,(RAMESYS-MH) on 06/10/2004 12:12
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <mhexc02.MHPCT.xbas.nhs.uk #5.5.0 smtp;500 _l command unrecognized>

      Roberts, Jackie,(RAMESYS-MH) on 06/10/2004 12:12
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <mhexc02.MHPCT.xbas.nhs.uk #5.5.0 smtp;500 _l command unrecognized>

      Bicknell01, Sharon (RAMESYS-NH) on 06/10/2004 12:12
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <mhexc02.MHPCT.xbas.nhs.uk #5.5.0 smtp;500 _l command unrecognized>

      Hoskins, Sylvia,(RAMESYS-MH) on 06/10/2004 12:12
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <mhexc02.MHPCT.xbas.nhs.uk #5.5.0 smtp;500 _l command unrecognized>




Any help would be great to rectify the problem.
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Question by:AJAY_MASSON
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Accepted Solution

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ikm7176 earned 500 total points
ID: 12239174
From RFC1985

If one of the 500 level error codes (550 or 551) are sent, the client  should assume that the protocol is not supported in the remote host or that the protocol has not been implemented correctly on either the client or server host.  In this case, multiple ETRN commands (dealing with the aliases for the system) should not be sent.

Are you using any firewall, if so disable the SMTP service on the firewall.
If its PIX firewall, disable the MAILGUARD feature and SMTP fixup protocol

Disable the extended SMTP on the exchange server and check the mail delivery
http://support.microsoft.com/default.aspx?scid=kb;EN-US;257569
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