RE: can't send to yahoo.com

  • From: Chris Wall <Chris.Wall@xxxxxxxxxxxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 12 Aug 2004 12:04:27 -0400

Does each location have its own Internet Mail Connector?  If so, are both of
those servers referencing the same DNS Server (if no SMTP Gateway) or are
they both forwarding mail to the same SMTP Gateway server?  I would suspect
that the Philly office has different routing preferences and it sends mail
using a different Internet Mail Connector and probably uses a different DNS
server.  Still either could be your issue.

If you are listed as an open relay as Greg suggested, you may want to
attempt to telnet to yahoo on port 25 from each locations SMTP Gateway.
Your Philly gateway will probably have no issues connecting.  Your local
Gateway will most likely error out if it is being blacklisted....

The weird thing here is that your local gateway server is sending you the
'delayed' notifications.  In my experience, most blacklisted domains will
not get a 'delayed' message, but rather a return from the recipient domain
stating that your mail was rejected....  For this reason, it seems that you
are unable to even establish connection from your local domain to the
recipient domain.

Chris

-----Original Message-----
From: luke levis [mailto:luke.levis@xxxxxxxxxx] 
Sent: Thursday, August 12, 2004 11:52 AM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com

http://www.MSExchange.org/

here's an interesting twist.. our network is connected by a frame relay
connection and our mail server in our philly office can send to yahoo, and
aol, etc. just fine but our mailserver here can't

-----Original Message-----
From: Lara, Greg [mailto:GLara@xxxxxxx]
Sent: Thursday, August 12, 2004 11:47 AM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com


http://www.MSExchange.org/

Luke, it could be a dns issue as Chris mentioned, but the www.dnsreport.com
report for your domain indicated that you're an open relay. I don't know if
Yahoo rejects based on that, but I wouldn't be surprised, given the volume
of UCE they must process. 


Greg Lara
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-----Original Message-----
From: luke levis [mailto:luke.levis@xxxxxxxxxx]
Sent: Thursday, August 12, 2004 11:00 AM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com

http://www.MSExchange.org/

ok this is an email I got back this morning from one I sent yesterday

This is an automatically generated Delivery Status Notification.

THIS IS A WARNING MESSAGE ONLY.

YOU DO NOT NEED TO RESEND YOUR MESSAGE.

Delivery to the following recipients has been delayed.

       llevis@xxxxxxxxx

and here is the SMTP header

Microsoft Mail Internet Headers Version 2.0
From: postmaster@xxxxxxxxxx
To: luke.levis@xxxxxxxxxx
Date: Thu, 12 Aug 2004 02:46:13 -0400
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
        boundary="9B095B5ADSN=_01C47A59CCF46D600002C8B7scmail01.smginc."
X-DSNContext: 7ce717b1 - 1418 - 00000004 - C00402D1
Message-ID: <ednHM3SOl00010dea@xxxxxxxxxxxxxxxxxxx>
Subject: Delivery Status Notification (Delay)

--9B095B5ADSN=_01C47A59CCF46D600002C8B7scmail01.smginc.
Content-Type: text/plain; charset=unicode-1-1-utf-7

--9B095B5ADSN=_01C47A59CCF46D600002C8B7scmail01.smginc.
Content-Type: message/delivery-status

--9B095B5ADSN=_01C47A59CCF46D600002C8B7scmail01.smginc.
Content-Type: message/rfc822

X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: multipart/alternative;
        boundary="----_=_NextPart_001_01C47FD2.EF4F88E1"
Subject: 
Date: Wed, 11 Aug 2004 14:42:20 -0400
Message-ID: <EE6665357CA2004B9F78AF6936D147400ADAC9@xxxxxxxxxxxxxxxxxx>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Index: AcR/0u9aiup+2KBSQjm1gxHJjKD5vg==
From: "luke levis" <luke.levis@xxxxxxxxxx>
To: <llevis@xxxxxxxxx>

------_=_NextPart_001_01C47FD2.EF4F88E1
Content-Type: text/plain;
        charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

------_=_NextPart_001_01C47FD2.EF4F88E1
Content-Type: text/html;
        charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable


------_=_NextPart_001_01C47FD2.EF4F88E1--

--9B095B5ADSN=_01C47A59CCF46D600002C8B7scmail01.smginc.--
-----Original Message-----
From: Lara, Greg [mailto:GLara@xxxxxxx]
Sent: Thursday, August 12, 2004 10:17 AM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com


http://www.MSExchange.org/

Thanks Al, I appreciate your thorough answer. 

RFC 821 is pretty loose in terms of the semantic requirements of the SMTP
"conversation," and your explanation clarifies very well why. I guess a
discussion of the SMTP protocol is outside the realm of this list, but I'll
let it suffice to say that until the more recent RFCs (such as 2505) carry
more weight with software developers and administrators, or until a better
protocol is developed, UCE will continue to plague us.


Greg Lara
----------------------------------------------------------------------------
---------------------------
This e-mail message may contain privileged, confidential and/or proprietary
information intended only for the person(s) named. If you are not the
intended recipient, please destroy this message, and any attachments, and
notify the sender by return e-mail. If you are not the intended
recipient(s), or the employee or agent responsible for delivering the
message to the intended recipient(s), you are hereby notified that any
dissemination, disclosure or copying of this communication is strictly
prohibited. 
----------------------------------------------------------------------------
---------------------------

-----Original Message-----
From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx]
Sent: Thursday, August 12, 2004 9:34 AM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com

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