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    #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Glen


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08-08-07 12:17 AM

The CEO at my firm is not able to send mail to a friend at a particular mail
domain. I have read countless articles on the MS KB as well as links within
the article and nothing has resolved the issue. I have a PIX 515E firewall
that has the fix protocol smtp 25 command enabled. I read an article stating
that this command should be disabled and I tried sending to the recipient
with the same error message. Sounds like it could possibly be an permissions
issue being that it states on the bounceback email that "You do not have
permission to send to this recipient." I am fairly confident that are mail
domain has not been blacklisted on the recipients mail server. Any insights
would be greatly appreciated.

--
Glen





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    RE: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Glen


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08-08-07 12:17 AM

Sorry this message was posted twice. The first time I tried posting it I got
a message stating that the service was unavailable. My apologies
--
Glen


"Glen" wrote:

> The CEO at my firm is not able to send mail to a friend at a particular ma
il
> domain. I have read countless articles on the MS KB as well as links withi
n
> the article and nothing has resolved the issue. I have a PIX 515E firewall
> that has the fix protocol smtp 25 command enabled. I read an article stati
ng
> that this command should be disabled and I tried sending to the recipient
> with the same error message. Sounds like it could possibly be an permissio
ns
> issue being that it states on the bounceback email that "You do not have
> permission to send to this recipient." I am fairly confident that are mail
> domain has not been blacklisted on the recipients mail server. Any insight
s
> would be greatly appreciated.
>
> --
> Glen





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Sanford Whiteman


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08-08-07 06:16 AM

On Tue, 07 Aug 2007 19:12:03 -0400, Glen <Glen@discussions.microsoft.com=
>  =

wrote:

> The  CEO  at  my  firm  is  not  able  to send mail to a friend at a
> particular  mail domain.

> I have a PIX 515E firewall that has the fix protocol smtp 25 command
> enabled.

PIX   SMTP   fixup  breaks  (E)SMTP  authentication.  If  you  require
authentication  before  relaying, no one will be able to relay through
the PIX. It's a very straightforward broken/fixed situation.

> Sounds  like it could possibly be an permissions issue being that it
> states  on  the bounceback email that "You do not have permission to
> send  to this recipient."

If  this  error is being generated by the recipient's correct MX, this
means  the  remote  MX  has  received  the  delivery  attempt, but has
rejected  the  attempt. This is invariably a result of the remote MX's
policies, whether they are based on a local user@domain, domain or IP.

If  the  error  is  being  generated by a mailserver deeper inside the
recipient's  domain  (beyond the MX level), then this is also a result
of  remote  domain  policies,  probably content-based in this case, or
quite  feasibly a false positive based on internal misconfiguration at
their end.

If  the error is being generated by a server that is neither an MX nor
mailbox server for the recipient's domain, then you are sending to the
wrong  remote  server, indicating that someone's DNS is broken, either
your local resolver or their public DNS zone.

Do an

nslookup -q=3Dmx example.com

from  your  outbound  mailserver, where example.com is the recipient's
domain.  Post  back  with the output. Include the actual domain, not a
fake.

> I  am fairly confident that are mail domain has not been blacklisted
> on  the  recipients  mail  server.

... a confidence based on what?

--Sandy





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Glen


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08-08-07 12:19 PM

Sandy, thank you for your reply. Here is the nslookup per your request.
Thanks again.

Glen

-- Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

H:\>nslookup -q=mx sfgiants.com
Server:  mpbf-mail.mpbf.local
Address:  10.10.1.2

Non-authoritative answer:
sfgiants.com    MX preference = 50, mail exchanger = mail.sfgiants.com
sfgiants.com    MX preference = 10, mail exchanger = catcher.sfgiants.com

sfgiants.com    nameserver = ns-west.cerf.net
sfgiants.com    nameserver = ns-east.cerf.net
catcher.sfgiants.com    internet address = 216.101.236.4
mail.sfgiants.com       internet address = 216.101.236.3
ns-east.cerf.net        internet address = 207.252.96.3
ns-west.cerf.net        internet address = 192.153.156.3

H:\>
Glen


"Sanford Whiteman" wrote:

> On Tue, 07 Aug 2007 19:12:03 -0400, Glen <Glen@discussions.microsoft.com>
> wrote:
> 
> 
>
> PIX   SMTP   fixup  breaks  (E)SMTP  authentication.  If  you  require
> authentication  before  relaying, no one will be able to relay through
> the PIX. It's a very straightforward broken/fixed situation.
> 
>
> If  this  error is being generated by the recipient's correct MX, this
> means  the  remote  MX  has  received  the  delivery  attempt, but has
> rejected  the  attempt. This is invariably a result of the remote MX's
> policies, whether they are based on a local user@domain, domain or IP.
>
> If  the  error  is  being  generated by a mailserver deeper inside the
> recipient's  domain  (beyond the MX level), then this is also a result
> of  remote  domain  policies,  probably content-based in this case, or
> quite  feasibly a false positive based on internal misconfiguration at
> their end.
>
> If  the error is being generated by a server that is neither an MX nor
> mailbox server for the recipient's domain, then you are sending to the
> wrong  remote  server, indicating that someone's DNS is broken, either
> your local resolver or their public DNS zone.
>
> Do an
>
>       nslookup -q=mx example.com
>
>  from  your  outbound  mailserver, where example.com is the recipient's
> domain.  Post  back  with the output. Include the actual domain, not a
> fake.
> 
>
> .... a confidence based on what?
>
> --Sandy
>





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Sanford Whiteman


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08-08-07 12:19 PM

> Sandy,  thank  you  for  your  reply.  Here is the nslookup per your
> request. Thanks again.

The  nslookup  checks  out, so your mailserver's resolver is returning
the correct results for the remote domain.

That  eliminates  the possibility that you are connecting to the wrong
remote mailserver (which can result in self-evident policy violations,
for  example  when  you  connect  to  an  old,  deconfigured  MX, or a
webserver that does not accept incoming for the domain but does listen
on port 25, etc.).

It  leaves open the question of what mailserver -- yours, their mx, or
their mailbox server -- is generating your DSNs. What is the full text
of  a  sample  DSN? Please include header information so I can see the
whole path.

--Sandy





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Glen


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08-08-07 06:21 PM

Sandy, what is the easiest way to create a full text of a sample dsn? Thanks
!
--
Glen


"Sanford Whiteman" wrote:
 
>
> The  nslookup  checks  out, so your mailserver's resolver is returning
> the correct results for the remote domain.
>
> That  eliminates  the possibility that you are connecting to the wrong
> remote mailserver (which can result in self-evident policy violations,
> for  example  when  you  connect  to  an  old,  deconfigured  MX, or a
> webserver that does not accept incoming for the domain but does listen
> on port 25, etc.).
>
> It  leaves open the question of what mailserver -- yours, their mx, or
> their mailbox server -- is generating your DSNs. What is the full text
> of  a  sample  DSN? Please include header information so I can see the
> whole path.
>
> --Sandy
>





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Sanford Whiteman


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08-08-07 06:21 PM

> Sandy, what is the easiest way to create a full text of a sample dsn?

Copy/paste the text of a received .EML file.

All mail clients have a way of viewing message source.

--Sandy





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Glen


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08-09-07 12:20 AM

Sandy, I hope this is what you requested. If not, let me know. Thanks!

Microsoft Mail Internet Headers Version 2.0
Received: from mpbf-mail.mpbf.local ([10.10.1.2]) by mail.mpbf.com with
Microsoft SMTPSVC(6.0.3790.1830);
Mon, 6 Aug 2007 17:33:55 -0700
Received: from mpbf-mail.mpbf.local (127.0.0.1) by mpbf-mail.mpbf.local
(MlfMTA v3.2r1b3) id hmuuv60171s5 for <gsakamoto@mpbf.com>; Mon, 6 Aug 2007
17:33:55 -0700 (envelope-from <lmrobbins@avaya.com> )
Received: from nj300815-nj-outbound.avaya.com ([198.152.12.100])
by mpbf-mail.mpbf.local (SonicWALL 5.0.3.8711)
with SMTP; Mon, 06 Aug 2007 17:33:53 -0700
Received: from 100.6.9.135.in-addr.arpa (HELO 306181ANEX2.global.avaya.com)
([135.9.6.100])
by nj300815-nj-outbound.avaya.com with ESMTP; 06 Aug 2007 20:36:29 -0400
X-IronPort-AV: i="4.19,226,1183348800";
d="scan'208,217"; a="46353663:sNHT16793748"
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----_=_NextPart_001_01C7D88A.FE766FB6"
Subject: You are Invited to an Exclusive VIP Reception
Date: Mon, 6 Aug 2007 18:36:27 -0600
Message-ID:
< 90CA2570634FC84991D33CFB53DB1A103C8F0D@3
06181ANEX2.global.avaya.com>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: You are Invited to an Exclusive VIP Reception
Thread-Index: AcfYiv2ZVYRlWVKiQtunBdFcq3ttZg==
From: "Robbins, Laurie (Laurie)" <lmrobbins@avaya.com>
To: "Glen Sakamoto" <gsakamoto@mpbf.com>
X-Mlf-Threat: nothreat
X-Mlf-Threat-Detailed: nothreat;none;none;rules_rules_Score=-4.56_Lang=1
X-Mlf-UniqueId: i200708070033530063520
Return-Path: lmrobbins@avaya.com
X-OriginalArrivalTime: 07 Aug 2007 00:33:55.0109 (UTC)
FILETIME=[A2C27D50:01C7D88A]

------_=_NextPart_001_01C7D88A.FE766FB6
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

------_=_NextPart_001_01C7D88A.FE766FB6
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable


------_=_NextPart_001_01C7D88A.FE766FB6--

--
Glen


"Sanford Whiteman" wrote:
 
>
> Copy/paste the text of a received .EML file.
>
> All mail clients have a way of viewing message source.
>
> --Sandy
>





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Sanford Whiteman


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08-09-07 06:20 AM

> Sandy, I hope this is what you requested. If not, let me know. Thanks!

I was looking for the headers and body of a _DSN_.

--Sandy





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    Re: #5.7.1 smtp;550 5.7.1 Unable to deliver to <user@xxxx.com>>  
Glen


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08-10-07 12:24 AM

Sandy, I am struggling to find the headers and body of a DSN
--
Glen


"Sanford Whiteman" wrote:
 
>
> I was looking for the headers and body of a _DSN_.
>
> --Sandy
>





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