The user never gets a message from the firewall that access has been denied, and is not intentionally trying to access content .yieldmanager.net......we are using symantec BE (current version), and system scans detect no problems. Have run spybot search, malware bytes, combofix. The category 6 indicates the site is blocked for adult content. A sample firewall log and dns search of content.yieldmanager listed below.
05/06/2009 15:26:44.783 - Web site access denied - xxxxxxxxxx, 1293, LAN - 220.127.116.11, 80, WAN, host.lightcore.net - Category:6 - MAC address: 00:0f:1f:dc:47:54 - content.yieldmanager.edgesuite.net/atoms/af/89/cd/71/af89cd718c19effb9767f9aac609af10.gif
This email was generated by: SonicOS Standard 18.104.22.168-7s (0017-C51B-7F78)
Generated by www.DNSstuff.com at 12:38:47 GMT on 07 May 2009.
How I am searching:
Searching for content.yieldmanager.edgesuite.net ALL record at a.root-servers.net [22.214.171.124]: Got referral to H.GTLD-SERVERS.net. (zone: net.) [took 36 ms]
Searching for content.yieldmanager.edgesuite.net ALL record at H.GTLD-SERVERS.net. [126.96.36.199]: Got referral to usw6.akam.net. (zone: edgesuite.net.) [took 128 ms]
Searching for content.yieldmanager.edgesuite.net ALL record at usw6.akam.net. [188.8.131.52]: Got CNAME of a1174.g.akamai.net. and referral to m.root-servers.net [took 50 ms]
Searching for a1174.g.akamai.net ALL record at d.root-servers.net [184.108.40.206]: Got referral to D.GTLD-SERVERS.net. (zone: net.) [took 43 ms]
Searching for a1174.g.akamai.net ALL record at D.GTLD-SERVERS.net. [220.127.116.11]: Got referral to ze.akamaitech.net. (zone: akamai.net.) [took 31 ms]
Searching for a1174.g.akamai.net ALL record at ze.akamaitech.net. [18.104.22.168]: Got referral to n2g.akamai.net. (zone: g.akamai.net.) [took 18 ms]
Searching for a1174.g.akamai.net ALL record at n2g.akamai.net. [22.214.171.124]: Reports a1174.g.akamai.net. [took 6 ms] Response:
Domain Type Class TTL Answer
a1174.g.akamai.net. A IN 20 126.96.36.199
a1174.g.akamai.net. A IN 20 188.8.131.52
NOTE: One or more CNAMEs were encountered. content.yieldmanager.edgesuite.net is really a1174.g.akamai.net.
There is no need to refresh the page -- to see the DNS traversal, to make sure that all DNS servers are reporting the same results, you can Click Here. Note that these results are obtained in real-time, meaning that these are not cached results. These results are what DNS resolvers all over the world will see right now (unless they have cached information). Note about ANY/ALL lookups: The ANY/ALL record type is designed to show every DNS record for a hostname. We display all DNS records that are returned to us. There are two catches to ANY/ALL lookups, however. The first is that it only returns DNS records for the hostname that you enter, so if you enter 'example.com' you will see the A record for example.com and MX record for example.com, but you will not see the A record for www.example.com (this isn't possible without a zone transfer, which normally requires special permission). The other catch is that some DNS servers are unfortunately set up to 'lie', and not return all the DNS records for a hostname. This behavior is the same no matter what you use to do the DNS lookup.