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mspencer100

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SMTP Relaying denied. IP name lookup failed

We are currently experiencing delivery problems to several domains. Below is an SMTP Connection test that shows Relaying Denied by this servers (69.72.176.188).  Test was done on site (From the Exchange server) with this utility.  http://www.zoneedit.com/smtp.html? To see why we cannot get email to this domain (@AOL.com) Login on the exchange server, browser at the link above, tested the valid email address customerservice@vjbooks.com sending email to valid email address vjbooks2@aol.com

I do not know why this server would be involved at all and why the delivery failure?  
 

Details:  We are sending an email from our Exchange 2000 server SP1 (SBS2000), Verizon DNS servers 4.2.2.1 and 4.2.2.2. We have a Sendmail server as part of the Firewall (VJBFW) that all mail is forwarded to. , Static IP 66.14.52.102: MX pointing to VJBFW.vjbooks.com at 66.14.52.102

Test results.
SMTP Connection:
OK, connected to 66.14.52.102...
< 220 VJBFW ESMTP Sendmail 8.11.3/8.11.3; Mon, 4 Oct 2004 21:01:47 -0700
> HELO edit.dnsvr.com
< 250 VJBFW Hello [69.72.176.188], pleased to meet you
> MAIL FROM:<customerservice@vjbooks.com>
< 250 2.1.0 <customerservice@vjbooks.com>... Sender ok
> RCPT TO:<vjbooks2@aol.com>
< 550 5.7.1 <vjbooks2@aol.com>... Relaying denied. IP name lookup failed [69.72.176.188]

Whois results for 69.72.176.188
This utility is provided by ZoneEdit.Com, the industry leader in DNS and domain mangement solutions.
OrgName:    Pegasus Web Technologies
OrgID:      PWT-5
Address:    1719 Route 10E
Address:    Suite 220
City:       Parsippany
StateProv:  NJ
PostalCode: 07054
Country:    US

NetRange:   69.72.128.0 - 69.72.255.255
CIDR:       69.72.128.0/17
NetName:    PEGASUSHOST
NetHandle:  NET-69-72-128-0-1
Parent:     NET-69-0-0-0-0
NetType:    Direct Allocation
NameServer: NS1.PWEBTECH.COM
NameServer: NS2.PWEBTECH.COM

 
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Sembee
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You need to ask the ISP to setup a reverse DNS entry for your IP address. If they tell you that you need to do this, then unless own the IP addresses (which I doubt) then they are wrong.

If you are on a dynamic IP address range - even if it is static - which usually means you are connecting by DSL this may not help and you will end having to use an SMTP connector to send the email via your ISPs SMTP server.
http://www.amset.info/exchange/smtp-connector.asp

Simon.
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susanzeigler
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mspencer100

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The other thing I noticed is that I get this error when in do a DNS reports. Is this significant in your eyes?  Do you think it could be what is stopping email from getting to AOL , Earthlink and other domains?  
 
 http://www.dnsreport.com for vjbooks.com

Mail server host name in greeting
    WARNING: One or more of your mailservers may be claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). This probably won't cause any harm, but may be a technical violation of RFC821 4.3 (and RFC2821 4.3.1).

VJBFW.vjbooks.com claims to be host VJBFW.
 
Thank you for your help.
That isn't unusual and is easily fixed.

ESM, Admin Groups, <your admin group>, Servers, <your server>, Protocols, SMTP. Right click on default SMTP virtual server and choose Properties. Click on the last tab "Delivery" and enter advanced. In the box marked FQDN, enter the name that the server is known as on the Internet: mail.domain.com or whatever. This should match the name that you are using for your MX record.

Simon.
Sembee, currently the Delivery/Advanced/FQDN = vjbnt01.vjbooks.local and when I click on Check DNS I get Domain name is valid. If I try to match my MX record with vjbfw.vjbooks.com when I click on Check DNS I get domain name is not valid.  Also I looked at the default connector properties / general tab and the "Forward all mail through this connector to the following smart hosts" = vjbfw.vjbooks.com

   Local bridgeheads: = VJBNT01 Default SMTP Virtual Server.
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