RE: Validating email addresses

You can use the nslookup command on the 400 providing you are at v4r3+

It dos not appear like it works from a command line,

I started it like this -->   NSLOOKUP DMNNAMSVR('150.159.216.206')

And at the terminal screen I typed:
 > set type=MX

then I typed yahoo.com and was returned the following info:

 > yahoo.com
   Server:  ns2.lci.net
   Address:  150.159.216.206

   Nonauthoritative answer:
   yahoo.com       preference = 1, mail exchanger = mx2.mail.yahoo.com
   yahoo.com       preference = 0, mail exchanger = mx1.mail.yahoo.com

   Authoritative answers can be found from:
   yahoo.com       nameserver = NS3.EUROPE.yahoo.com
   yahoo.com       nameserver = NS1.yahoo.com
   yahoo.com       nameserver = NS5.DCX.yahoo.com
   mx2.mail.yahoo.com      internet address = 128.11.23.199
  < big snip>
   mx1.mail.yahoo.com      internet address = 128.11.23.247
   NS3.EUROPE.yahoo.com    internet address = 194.237.108.51
   NS1.yahoo.com   internet address = 204.71.200.33
   NS5.DCX.yahoo.com       internet address = 216.32.74.10


Bryan Dietz




                                                                                
                      
                    David Gibbs                                                 
                      
                    <david@midrange.com        To:     MIDRANGE-L@midrange.com  
                      
                    >                          cc:                              
                      
                    Sent by:                   Subject:     RE: Validating 
email addresses            
                    owner-midrange-l@mi                                         
                      
                    drange.com                                                  
                      
                                                                                
                      
                                                                                
                      
                    06/29/00 07:28 PM                                           
                      
                    Please respond to                                           
                      
                    MIDRANGE-L                                                  
                      
                                                                                
                      
                                                                                
                      




At 06:05 PM 06/29/2000, you wrote:
>         You should be able to do a DNS lookup to validated the e-mail
> domain.

Make sure, however, that you don't just look for the IP address of the
domain ... many domains do not have a IP address, just a MX or Mail
eXchanger record.

MIDRANGE.COM operated that way for years before the web page went online.

david

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