RE: NDR
- From: <ChongJa@xxxxxxxxxxxxxxxx>
- To: <exchangelist@xxxxxxxxxxxxx>
- Date: Wed, 18 Jan 2006 13:22:23 -0500
Why am I gettting this particular error with this server? If I log into
arcsmtp5 and do a telnet session to another SMTP server its fine, they
recognize my server as arcsmtp5.redcross.org which is correct, rather
than arcsmtp5.arcdmz.re.redcross.org which is the internal DNS name and
would be no public A record for this.
220 mta18.srv.hcvlny.cv.net -- Server ESMTP (Sun Java System Messaging
Server 6.
2-4.03 (built Sep 22 2005))
helo
251 mta18.srv.hcvlny.cv.net system name not given in HELO command,
arcsmtp5.redc
ross.org [162.6.217.41].
________________________________
From: John T (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
Sent: Wednesday, January 18, 2006 12:55 PM
To: [ExchangeList]
Subject: [exchangelist] RE: NDR
http://www.MSExchange.org/
You are looking at the wrong side.
http://www.dnsstuff.com/tools/lookup.ch?name=arcsmtp5.arcdmz.re.redcross
.org&type=A
Since there is no A record, there is no way to see if there is a PTR
record for the corresponding IP address.
John T
eServices For You
-----Original Message-----
From: ChongJa@xxxxxxxxxxxxxxxx [mailto:ChongJa@xxxxxxxxxxxxxxxx]
Sent: Wednesday, January 18, 2006 9:14 AM
To: [ExchangeList]
Subject: [exchangelist] NDR
http://www.MSExchange.org/
I have a user that's getting an NDR when sending to a user
@ada.state.oh.us. Although the NDR appears that it's doing some sort of
reverse DNS lookup, I don't think this is the case. When I put in
ada.state.oh.us in dnsstuff.com it comes back with an error that their
mx record is referencing a cname rather than an A record. I did some
research which suggests that when this is any mail sent to this domain
is rejected. When I connect to their mail server on port 25 and issue a
helo it comes back with syntax error. When I issue ehlo it does not
appear to do anything. Wondering if this is something on their end or
ours. (All our outbound mail goes out to mailsweeper smarthosts (2)
Received:571 - MAIL REFUSED - Reverse DNS failed; cannot resolve the
(arcsmtp5.arcdmz.re.redcross.org) domain in the HELO command.
James Chong
ETS Sr. Exchange Engineer
Office: 703.206.7548
Cell: 703.863.1483
chongja@xxxxxxxxxxxxxxxx
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