NDRs to a specific domain

[kovacsa]

Hello All .. I'm recieving this message when sending to one domain in particular.

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

Subject: Test
Sent: 8/5/2003 9:49 AM

The following recipient(s) could not be reached:

'person@place.ca' on 8/5/2003 9:49 AM
The recipient name is not recognized
The MTS-ID of the original message is: c=US;a= ;p=BL;l=CPDC-030805134853Z-49926


I'm using Exchange 5.5. Any ideas? Again, it is only one domain.

Thanks,

kovacsa

 

[Psingh]

It means either the eamil address does not exists or there can be some DNS issue at the ISP end.

If u r sure that the email address, to whom u r sending the mail is correct then try to speak to ur ISP. Trace the route to that particular domain and see at what stage the packets gets lost and convey the same to ur ISP.

PSingh

 

[kovacsa]

Hey PSingh, thanks for the reply.

I've done a tracert and pingpath to the mail.domain.com address. Not a single packet was lost along the way.

This problem only seems to happen between our company mail system and the ISP email system. If you send from somewhere outside of domain, ie hotmail, the message is delivered fine. Also .. any email from our domain to anywhere else, delivers fine.

Any ideas?

Thanks,

kovacsa

 

[Psingh]

Then there can be two things

1) The domain to whom u r trying to send the mail had blocked ur domain name so that they won't receive any mails from ur end.

2) There is some blockage at ur ISP side, that is restricting u to send the mail to that specific domain.

U have to check with both of them for the blockage.

PSingh

 

[kovacsa]

Hey PSingh, I'm going to contact the domain were trying to send to and investigate.

Quick Question ... when you say "ISP" what do you mean exactly? Would there be a reason our ISP would block emails to a third party domain from our Exchange Server?

Thanks again,

kovacsa

 

[Psingh]

They can block a particular IP address for some reason or they had not updated there DNS records.

PSingh