Unable to deliver the message due to a communications failure

[rabukhiny]

Hi, while sending to some addresses I get the bounce which looks like this. Why would that happen. Addresses are wierd, some domain name are in Ireland domainname.ie, other have numbers in a domain name. However that should not prevent delivery. From other mail system I do not have problems sending, but here I do.

'blahblah@5kblahblah.com' on 9/10/2003 12:54 PM

Unable to deliver the message due to a communications failure

The MTS-ID of the original message is: c=US;a= ;p=COMANY;l=SERVER_MAIL4-030910165400Z-37595

 

[Psingh]

I think the DNS server is unable to resolve the domain name. Try tracing the route of that particular domain name or try nslookup.

PSingh

 

[rabukhiny]

No actually it resolves it just fine, and I also was able to get MX record from our DNS and successfully telneted to that mx record on port 25 of all of our mail servers