Message tracker object cannot be found error

We have been having issues sending mail to a particular domain. I tracked the message and I'm getting an error with a strange entry that I think is the problem. I'm not sure how to interpret it.

The object *************************************************0**********0**0 in the message tracking logs cannot be found in the directory. The object may have been deleted The tracking history may be incorrect.

I've seen this error on two separate emails and it always applies to the domain that is not receiving our emails.

What does it mean?
numb3rs1xAsked:
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Exchange_GeekCommented:
Perform a simple telnet test to the other server and check if you can drop an email. Also, what is the NDR you are getting when you are not able to the particular domain.

If possible please attach the message header in this thread.

thanks.
numb3rs1xAuthor Commented:
I'm more interested in how something like this gets logged. We were able to solve the problem. It was something the admin had to do on his side that had to do with our recent change in ISP service and subsequent change in mailserver public IP. Could you tell me how such an entry shows up?
Exchange_GeekCommented:
Yep, the telnet test would have answered your question as to why the mails wouldn't have been delivered - could be that the MX record would not have been updated - could be a reason.

Coming to the point why those wonderful ***** were appearing. I had seen those **** being appearing when remote site would have a CISCO router in front of their Exchange boxes to receive emails.

Could you confirm that ??

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numb3rs1xAuthor Commented:
I saw something about that when I was researching this message. I asked him if that was what he was using, but he didn't answer me.
Exchange_GeekCommented:
Well, you would find almost all over google about CISCO routers over such message tracking logs.

But well, all's well that ends well (or some thing of that sort) ;)
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