Tagged: DNS

Comcast DNS (via CGA in a VGA World.)

DNS resolution sequence.
Image via Wikipedia

Latency is one reason that I like DSL instead of Cable. I have never had cable personally. You can understand the differences between DSL and Cable here.

In case anyone hasn’t figured it out yet, comcast does really horrible stuff with DNS. What finally broke the camels back was that instead of returning DNS errors, comcast started returning pages with redirects to their search page. This meant any time comcast couldn’t find something or it took too long they would redirect you. The problem is that if you’re, say, trying to resolve your buddy in japan, comcast will send you to the searchlight page … Read More

via CGA in a VGA World.

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Norton Launches Norton DNS – Norton DNS vs. OpenDNS vs Google DNS

Some nice comparisons between DNS providers.

Norton last week launched nortondns. Norton dns runs from Symantec's and dynamic dns' servers. There are other DNS services like Google DNS, and OpenDNS. Norton says it wants to offer its own DNS service to protect users from malicious software from is community blacklist of websites. Users can vote on a site, and norton will scan it. OpenDNS also provides phishing protection, but not necessarily malware protection. Google DNS simply just prevent … Read More

via Canadian Tech Blogger

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Is Mail slow to send?

The shape of the online universe
The shape of the online universe (Photo credit: Adam Crowe)

There are two things.  Ernie suggested “This test result would point to this being a problem that is characteristic of some, but not all, ISPs, and not the SMTP itself. It involves DNS, Two citations, different approaches, but really both addressing DNS:

http://discussions.apple.com/thread.jspa?messageID=9641256&#9641256

and

http://discussions.apple.com/thread.jspa?messageID=8974547&#8974547

If you can get your ISP to give you hard DNS addresses, I would take that approach rather than Open DNS.Another thing to try first, is powering down your modem, router and computer, and then re-powering in the sequence recommended by your ISP.

The DNS address furnished by the ISP solution is best carried out in the router — do you have a router — used at home, when you have a laptop that you will use at other venues. Changing in the computer may impact remote use.

Since i switched from DSL to a cable broadband provider, I have not had to worry about this issue. When I did, however, I made the changes in the router, and not in the computer.”

Raltham suggests “I have had this problem too but have just found a cure.

Close Mail.
Open Mail by clicking on the Mail Icon, and at the same time press the Shift button.

I have no idea what it does, but it has made all the difference to the frighteningly sluggish performance of Mail. It is now back to normal.”

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