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Emails to particular domain sometimes don't arrive

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Emails to particular domain sometimes don't arrive - 26.Jun.2007 8:59:54 AM

evast

Posts: 2
Joined: 26.Jun.2007
Status: offline

Hello everyone,
I hope someone can help us with this.
When we try to email colleagues of us in Germany, the email sometimes doesn't arive in Germany. We are using Exchange 2003, and we don't get any error messages or NDR's. They don't use Exchange 2003, they are using POP3 from an internet provider. We don't have problems emailing to other domains but this domain. The only weird thing I can find are our Exchange 2003 Message Tracking Logs. When we send a message out to a domain (f.e. mcafee.com), we get this in our last 2 lines of our Tracking log:
12-6-2007 12:01 SMTP: Started Outbound transfer of Message
12-6-2007 12:01 Message transferred to sncwsrelay1.nai.com through SMTP

But when we send a message to our colleagues in Germany, the last 2 lines look like this :

12-6-2007 12:01 SMTP: Started Outbound transfer of Message
12-6-2007 12:01 Message transferred to 212.227.15.150 through SMTP

And we get the following error :

The object '212.227.15.150' in the message tracking logs can't be
found in the directory. The object may have been deleted. Tracking
history may be incorrect.

Can anyone help us with this? Why does the IP of the mx display instead of the name when we send emails to our colleagues?
It is annoying and frustrating, because when our colleagues call us that the didn't recieve an email we've sent them, we can't find any errors...

Thanks in advance,
Erik

< Message edited by evast -- 26.Jun.2007 10:13:17 AM >

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RE: Emails to particular domain sometimes don't arrive - 26.Jun.2007 12:10:15 PM

uemurad

Posts: 8232
Joined: 7.Jan.2004
From: California, USA
Status: offline

I don't think you can read too much into the name displayed in Message Tracking. You can determine that the message left your Exchange server and that Message Tracking can no longer follow the message.

What you can do as a next step is to use Telnet to communicate directly with one of the systems in Germany. Follow the steps, and note any non-OK responses from their server. If you have any questions about what comes back, post them here.

http://exchangeguy.blogspot.com/2007/06/using-telnet-to-simulate-server.html

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange (2007-2011)
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to evast)

Post #: 2

RE: Emails to particular domain sometimes don't arrive - 27.Jun.2007 10:59:57 AM

evast

Posts: 2
Joined: 26.Jun.2007
Status: offline

Thank you for your reply.
I tried telnetting to the other server, and I found no problems, all emails arrived, so very frustrating...
The same thing happens when we try to send email to our colleagues, because it sometimes happens that mail from us to them doesn't arrive. I checked it myself, and the mail is really not arriving over there. I can find that the mail has left our server (Exchange 2003 Message Tracking Logs), but it sometimes does not arrive over there. And like I said, the only "weird" thing I can find is that the IP from the provider is displayed in the Message Tracking Logs instead of the name (and the error that is displayed : "The object '212.227.15.150' in the message tracking logs can't be
found in the directory. The object may have been deleted. Tracking
history may be incorrect."). Anything else I cannot find.

Please help us, because this thing is driving us nuts...

(in reply to uemurad)

Post #: 3

RE: Emails to particular domain sometimes don't arrive - 27.Jun.2007 11:26:02 AM

uemurad

Posts: 8232
Joined: 7.Jan.2004
From: California, USA
Status: offline

On your Exchange server, use NSLookup to confirm that the MX record you see points to the same IP address you used for the telnet test.
http://exchangeguy.blogspot.com/2007/06/using-nslookup-to-determine-smtp.html

If you have a working relationship with the recipient company/organization, ask them to search their logs for the communication from your server. If they are using Exchange, have them look at Message Tracking. If it doesn't show up there, ask them to check their SMTP logs. Read through these articles to see if it helps.
http://exchangeguy.blogspot.com/2007/06/missing-messages-part-1.html

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange (2007-2011)
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to evast)

Post #: 4