Can't send to a particular domain 2

[Rene1024]

Hi,

I'm having problems sending email to a group of people @myfloridahouse.gov from my exchange server. I keep getting an NDR that says:

The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address.

I know that email addresses are good because I can email them from my yahoo account.

I can successfuly ping myfloridahouse.gov from my computer, I can also tracert myfloridahouse.gov

Are there any settings on my exchange server that I can adjust resolve this problem?

Rgds.

Rene

 

[hkxuser]

This is a problem which appears to be more and more common. I've had similar issues in the past as well. If I were in your shoes I would try and get in touch with a sys admin from myfloridahouse.gov. Maybe mail from your domain is being blocked at their end. If that's the only domain you are having a problem with then I think it's worth a try. Before you do that I would download smtpdiag (do a google search for it). It's a cool command line tool that lets you run a test smtp connection from your domain to another one. It's very easy to use and will give you some helpful information. Best of luck!

-Rob

 

[markdmac]

More than likely your issue is related to RDNS problems. An increasing number of domains require that an RDNS lookup of your IP resolve to your domain name.

Visit

http://www.dnsstuff.com

and perform an RDNS lookup by entering your public IP. If it returns an error, speak with your ISP to get the RDNS record fixed.



I hope you find this post helpful.

Regards,

Mark

Check out my scripting solutions at

http://www.thespidersparlor.com/vbscript

 

[tecnomuzik]

Markdmac is most likely right about the RDNS and domains requiring your IP to resolve to your domain name, but there is a way around it.

To get around this you have to configure Exchange to send to that domain via your ISP's smtp server.
You can create a new SMTP connecter in your Exchange System Manager - right click on Connectors - Add New SMTP Connector.

Select 'Forward all mail through this connector to the following smart hosts' and in this field put in your ISP's SMTP server. i.e. smtp.yourisp.com

Under Localbridgeheads - select your Exchange server.
On the Address Space tab click Add - SMTP.
Email domain enter: *myfloridahouse.gov
Cost: 1

You should now be able to send emails to that domain.

 

[58sniper]

that's really not a good workaround, though, as the RFC requires you to have a valid PTR record anyways. Using a smarthost is just skirting the rules. Far more ISPs are blocking mail for no PTR record.

Pat Richard, MCSE MCSA:Messaging CNA
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[Rene1024]

Hi

Thanks for all your help, I a lready talked to the IT dept. at myfloridahouse.gov and they assured me that they are not blocking emails from my domain.

I did a RDNS for my public ip address and this is what I got:

Answer:
My public ip address PTR record: h-my pubic ip address.lsanca54.covad.net. [TTL 3600s] [A=my public ip address]

Is this what I should have?

Rgds.

Rene

 

[58sniper]

No - you should have a record that mentions your domain name, such as mail.domain.com. Have your ISP create the PTR record.

Pat Richard, MCSE MCSA:Messaging CNA
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[Rene1024]

The issue has been resolved, I followed 58sniper's advice, called my ISP and they created a PTR record for me. I'm now able to send messages to myfloridahouse.gov

Thanks to all for your help.

Rgds.

Rene.