Comments on: OpenDNS and USF Mail http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/ Fri, 21 Oct 2011 18:44:47 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: David Ulevitch http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/comment-page-1/#comment-7 David Ulevitch Wed, 28 Feb 2007 02:12:26 +0000 http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/#comment-7 I am OpenDNS. Contact me, I think I know what's happening. When you use a public DNS server they hand back one IP address and when you use their internal DNS server they hand back a different IP address for mail.usf.edu. This is what Paul Vixie calls a "stupid DNS" trick and it's quite annoying. But that's just a guess. I bet the mail.usf.edu IP that you are being handed back is for a public mail server that is meant to receive mail only. -david I am OpenDNS. Contact me, I think I know what’s happening. When you use a public DNS server they hand back one IP address and when you use their internal DNS server they hand back a different IP address for mail.usf.edu. This is what Paul Vixie calls a “stupid DNS” trick and it’s quite annoying. But that’s just a guess.

I bet the mail.usf.edu IP that you are being handed back is for a public mail server that is meant to receive mail only.

-david

]]> By: Douglas Wilson http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/comment-page-1/#comment-4 Douglas Wilson Tue, 27 Feb 2007 21:35:04 +0000 http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/#comment-4 David, I am currently investigating what could be the cause before I attempt to contact OpenDNS or the USF Mail administrators (I work for my college’s Academic Computing Department). David, I am currently investigating what could be the cause before I attempt to contact OpenDNS or the USF Mail administrators (I work for my college’s Academic Computing Department).

]]> By: David Ulevitch http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/comment-page-1/#comment-2 David Ulevitch Tue, 27 Feb 2007 20:25:49 +0000 http://somethingdoug.com/thoughts/2007/02/27/opendns-and-usf-mail/#comment-2 That's really really weird. Will you email contact at opendns dot com with some info about what mail server you are contacting. Are you using SMTP AUTH at all? -david That’s really really weird. Will you email contact at opendns dot com with some info about what mail server you are contacting. Are you using SMTP AUTH at all?

-david

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