Unable to deliver the message due to a communications failure

[KimVong]

I can't e-mail out to a couple of domain.
this is the error message

Your message did not reach some or all of the intended recipients.

Subject:
Sent: 10/2/2002 9:26 AM

The following recipient(s) could not be reached:

'Tariv@mindspring.com' on 10/2/2002 9:26 AM
Unable to deliver the message due to a communications failure
The MTS-ID of the original message is: c=US;a= ;p=Coast Oil Compan;l=COCMAIL-021002162620Z-895


I do have reverse DNS, and I can e-mail to all other domain except for this.
My exchange server 5.5 use to be open relay, and I have remove our ip address from most of the black list.
can someone tell me how to solve this problem?

thanks

KV

 

[devastator]

Can you perform an nslookup for mail.mindspring.com

 

[KimVong]

I did an nslookup on this mail.minspring.com and it's okay
what should I do next?
thanks

 

[Kjasa]

Can you connect to the server you find in the MX record? Telnet port 25. Looks like they have about 13 to choose from

 

[KimVong]

Yes I have DSL
and I went to

http://www.ordb.org

to check on the relay database, it look like there's a third party relay list that black list us. So BESTCT, I think we are both black listed.

what is the mx record?