Guest JB Posted September 17, 2007 Posted September 17, 2007 I keep getting this error, we blocked that IP at our firewall but the error persists: The DNS server encountered an invalid domain name in a packet from 220.73.220.4. The packet is rejected. Any ideas?
Guest Robert L [MVP - Networking] Posted September 17, 2007 Posted September 17, 2007 Re: DNS error This troubleshooting may help, Event ID TroubleshootingEvent ID: 5504 - The DNS server encountered an invalid domain name ... Event ID 7062: DNS Server encountered a packet addressed to itself ... http://www.chicagotech.net/wineventid.htm Bob Lin, MS-MVP, MCSE & CNE Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com "JB" <jb@nospam.net> wrote in message news:%23n6BCZT%23HHA.700@TK2MSFTNGP05.phx.gbl... I keep getting this error, we blocked that IP at our firewall but the error persists: The DNS server encountered an invalid domain name in a packet from 220.73.220.4. The packet is rejected. Any ideas?
Guest AGrigorof Posted September 17, 2007 Posted September 17, 2007 Re: DNS error On Sep 17, 10:20 am, "JB" <j...@nospam.net> wrote: > I keep getting this error, we blocked that IP at our firewall but the error > persists: > The DNS server encountered an invalid domain name in a packet from > 220.73.220.4. The packet is rejected. > > Any ideas? There could be several reasons for this. See the comments here: http://www.eventid.net/display.asp?eventid=5504&eventno=642&source=DNS&phase=1 Adrian http://www.altairtech.ca/troubleticket/ http://www.altairtech.ca/evlog/
Guest JB Posted September 17, 2007 Posted September 17, 2007 Re: DNS error Sorry, I should have said that I go to EventID as a first resource....... Any other ideas? "AGrigorof" <adrian.grigorof@altairtech.ca> wrote in message news:1190043216.594225.170840@y42g2000hsy.googlegroups.com... > On Sep 17, 10:20 am, "JB" <j...@nospam.net> wrote: >> I keep getting this error, we blocked that IP at our firewall but the >> error >> persists: >> The DNS server encountered an invalid domain name in a packet from >> 220.73.220.4. The packet is rejected. >> >> Any ideas? > > There could be several reasons for this. See the comments here: > http://www.eventid.net/display.asp?eventid=5504&eventno=642&source=DNS&phase=1 > > Adrian > http://www.altairtech.ca/troubleticket/ > http://www.altairtech.ca/evlog/ >
Guest Adrian Grigorof Posted September 17, 2007 Posted September 17, 2007 Re: DNS error When you say that you blocked the IP in the firewall do you mean that you are blocking incoming connections from that IP? That won't help because most probably it is your server that is initiating the connection and there may be a valid reason to connect to this IP. Btw, this host is a DNS server and the IP seems to be located in Korea. Is there a specific time when this message is showing up? Maybe you can use a sniffer (like Ethereal) and see what kind of DNS request is sent. If indeed the response is invalid (for reasons described in the link to http://www.eventid.net) then you may contact the admin for that domain as you cannot control what response your DNS server is receiving. -- Regards, Adrian Grigorof http://www.altairtech.ca/troubleticket/ http://www.altairtech.ca/evlog/ "JB" <jb@nospam.net> wrote in message news:OuTMm0U%23HHA.3916@TK2MSFTNGP02.phx.gbl... > Sorry, I should have said that I go to EventID as a first resource....... > > Any other ideas? > > "AGrigorof" <adrian.grigorof@altairtech.ca> wrote in message > news:1190043216.594225.170840@y42g2000hsy.googlegroups.com... >> On Sep 17, 10:20 am, "JB" <j...@nospam.net> wrote: >>> I keep getting this error, we blocked that IP at our firewall but the >>> error >>> persists: >>> The DNS server encountered an invalid domain name in a packet from >>> 220.73.220.4. The packet is rejected. >>> >>> Any ideas? >> >> There could be several reasons for this. See the comments here: >> http://www.eventid.net/display.asp?eventid=5504&eventno=642&source=DNS&phase=1 >> >> Adrian >> http://www.altairtech.ca/troubleticket/ >> http://www.altairtech.ca/evlog/ >> > >
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