RE: can't send to yahoo.com

  • From: Chris Wall <Chris.Wall@xxxxxxxxxxxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 12 Aug 2004 12:16:56 -0400

Sorry, missed that one... 

-----Original Message-----
From: Lara, Greg [mailto:GLara@xxxxxxx] 
Sent: Thursday, August 12, 2004 12:14 PM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com

http://www.MSExchange.org/

Chris, Luke mentioned earlier in the thread that he was able to connect via
telnet to yahoo on port 25. 

Luke, if you're familiar with SMTP commands, I suggest you make the telnet
session again, but try to manually run through a complete session, for
example:

220 YSmtp mta399.mail.scd.yahoo.com ESMTP service ready helo smginc.com
(Their response codes may not match mine exactly, but it should say OK) mail
from:<myaddress@xxxxxxxxxx> 250 Ok rcpt to:<yahooaddress@xxxxxxxxx> 250 Ok
Data
354 End data with <CR><LF>.<CR><LF>
Subject: test message
Hi
.

Send the transcript of this session to the list if you can.


Greg Lara
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-----Original Message-----
From: Chris Wall [mailto:Chris.Wall@xxxxxxxxxxxxxxxxxxx]
Sent: Thursday, August 12, 2004 12:04 PM
To: [ExchangeList]
Subject: [exchangelist] RE: can't send to yahoo.com

http://www.MSExchange.org/

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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This e-mail message may contain privileged, confidential and/or proprietary
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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. 
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