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smtpsvc error #2013

I checked event viewer and found the smtpsvc error ID#2013 happens everyday. I can't find the resolution from Microsoft.
Can anyone configure for me?


Avatar of anfi

1) What mail server do you use?
2) Could you post full text of the logged message?
Avatar of Elaine_Shi


we are using Exchange 2003. I will post the log message tomorrow.


it shows the error message is that UDP is down. Can anyone tell me how to enable?


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I have the exact same error message as the one you posted. The difference is that we have a stand alone server which is DNS server and Exchange server. When I use nslookup to check, it shows two ip address: and
I can send and receive email, but checked queue has some stacked message since the date the networking company left our company. They must changed something with the firewall which is a cisco pix 501. According to your posted article 21110083, it seems that I have to reinstall everything which is a big challenger for me since  I am new to this company. Is there any other way to resolve this issue? also is this error message critical or not?



>> and

     Are the 2 IPs for your exchange server or for your DNS or one for exchange and one
for DNS.

    If the 2 IPs point to the same hostname, you have trouble, need to go to the DNS
server to delete the incorrect IP.
I had a similiar issue about 6 months ago. I called both Microsoft and Cisco. Cisco said there was a problem in the way Microsoft performed it's DNS under 2003 and that the PIX would reject certain types of packets r something like that. They had me run a command on the server that fixed the problem. Below is the command:

dnscmd "your server name" /Config /EnableEDnsProbes 0

Let us know if it works for ya!

when I add a forwarder IP address as, and in the DNS server propertites, forwarder tab, the error message stopped.

Anyway thanks for your help.