nanog mailing list archives
RE: Hotmail blackholing certain IP ranges ?
From: "Leigh Porter" <leigh.porter () ukbroadband com>
Date: Thu, 26 Apr 2007 00:43:19 +0100
Yeah they and a few others started doing this not too long ago (few months). I thought perhaps something common got upgraded/patched but then I just thought that it was a rather odd configuration change.. It certainly is new. A chap I know (for some reason) set his source port for queries to be port 53 and his DNS queries started to fail. -- Leigh -----Original Message----- From: owner-nanog () merit edu on behalf of Chris Edwards Sent: Wed 4/25/2007 10:43 PM To: nanog () merit edu Subject: Re: Hotmail blackholing certain IP ranges ? Some sites have recently reported problems mailing hotmail due to inability to resolve the hotmail MX records. This appears to be due to the hotmail DNS servers now blackholing DNS queries where the UDP source port was < 1024. I can reproduce this here and now, but don't know if it's new. Chris -- Chris Edwards, Glasgow University Computing Service
Current thread:
- Hotmail blackholing certain IP ranges ? Jeroen Wunnink (Apr 25)
- RE: Hotmail blackholing certain IP ranges ? Stasiniewicz, Adam (Apr 25)
- RE: Hotmail blackholing certain IP ranges ? Gabriel Kuri (Apr 25)
- <Possible follow-ups>
- Re: Hotmail blackholing certain IP ranges ? Richard P. Welty (Apr 25)
- Re: Hotmail blackholing certain IP ranges ? Al Iverson (Apr 25)
- Re: Hotmail blackholing certain IP ranges ? Chris Edwards (Apr 25)
- RE: Hotmail blackholing certain IP ranges ? Leigh Porter (Apr 25)
- Re: Hotmail blackholing certain IP ranges ? Simon Waters (Apr 26)
- Re: Hotmail blackholing certain IP ranges ? Leigh Porter (Apr 26)
- Re: Hotmail blackholing certain IP ranges ? Jeroen Wunnink (Apr 26)
- RE: Hotmail blackholing certain IP ranges ? Stasiniewicz, Adam (Apr 26)
- Re: Hotmail blackholing certain IP ranges ? Al Iverson (Apr 26)
- RE: Hotmail blackholing certain IP ranges ? Leigh Porter (Apr 25)
- Re: Hotmail blackholing certain IP ranges ? Owen DeLong (Apr 26)
- Re: Hotmail blackholing certain IP ranges ? Leigh Porter (Apr 26)