Hundreds of 450 mx lookup failure message

[MrClinker]

Dear experts:

My Groupwise 5.5 GWIA screen is showing hundreds of messages of this type:

- Analyzing result file: rxxxxx.nnn
Detected error on SMTP command
Command: aefv.com
Response: 450 MX lookup failure

The command is always the same: "aefv.com" and this message is appearing once every 2 or 3 seconds.

How can I find who is trying to send this message? How can I stop this?

We do not have RELAY enabled and we do not allow rule generated messages.

Thank you very much,


Gerardo.
Minas - Uruguay, South America.

 

[FarOut]

It sounds like you might have this reoccuring e-mail in the "Result" folder of the GWIA. Which is trying to resend it till it gets resolved or until it expires. You could just rename the result folder in GWIA and see if the problem goes away. While looking for aefv.com, I found that it is a valid site and has an "A" record at ns1.aefv.com. [69.50.248.89]. Hope that this is of some help.


Possible reasons for 450 error:
1. IP address to DNS has changed. If this is the case update the RESOLV.CFG
2. IP filtering has been added to the routers so the gateway cannot see the DNS machine.
3. Bad network card (NIC).
4. TCP/IP is not bound to the network card.
5. Bad network cabling.
6. named is not running on the DNS machine.
7. The DNS machine is down.
8. The specific site your sending email may be down. If you can send email to other locations, then in most cases all your GWIA/DNS settings are fine. Try sending the email again later to see if their site is running. A good test is loading ping at the server console and try pinging the site your trying to send email to.
9. The ISP which is hosting the DNS may have the wrong entry for the MX record.




FarOut
V-Peace-V