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Re: Bell Canada/Bellnexxia ignoring MX records, anybody else?

  • From: Mike Tancsa
  • Date: Thu Apr 17 12:35:59 2008

At 11:50 AM 4/17/2008, Mark Jeftovic wrote:
At any rate, what it looks like to us is that customers using Bell SMB outbound mail servers, possibly other outbound mail servers on Bell (Nexxia, Sympatico?) to destination domains whose NS are hosted on our nameservers seem to have the MX record *ignored* and the mail is delivered to the A record for the domain.

We also suspect that it happens when the MX record points at a host back inside the Bell network/address space.

I had a quick look on our web server for the last 7 days (where the A record for sentex.net resides), and the only hosts contacting us there trying to send from @sympatico email are from Hotmail IP space (Bell I think outsources their resi email to MSN/Hotmail). What IP addresses are involved in your case ? Send them to me and I can take a look to see if they are showing up. If you need more detail (SMTP IDs etc) let me know and I can send that offlist.


---Mike

# zgrep -i sympati maillog.[0-7].gz | grep relay= | awk -F"relay=" '{print $2}'
bay0-omc1-s26.bay0.hotmail.com [65.54.246.98]
bay0-omc2-s2.bay0.hotmail.com [65.54.246.138]
bay0-omc2-s23.bay0.hotmail.com [65.54.246.159]
bay0-omc1-s36.bay0.hotmail.com [65.54.246.108]
bay0-omc1-s6.bay0.hotmail.com [65.54.246.78]
bay0-omc1-s18.bay0.hotmail.com [65.54.246.90]
bay0-omc1-s22.bay0.hotmail.com [65.54.246.94]
bay0-omc1-s8.bay0.hotmail.com [65.54.246.80]
bay0-omc2-s40.bay0.hotmail.com [65.54.246.176]
bay0-omc2-s17.bay0.hotmail.com [65.54.246.153]
bay0-omc1-s8.bay0.hotmail.com [65.54.246.80]
bay0-omc3-s6.bay0.hotmail.com [65.54.246.206]
bay0-omc3-s16.bay0.hotmail.com [65.54.246.216]
bay0-omc1-s7.bay0.hotmail.com [65.54.246.79]
bay0-omc3-s1.bay0.hotmail.com [65.54.246.201]
bay0-omc1-s4.bay0.hotmail.com [65.54.246.76]
bay0-omc2-s13.bay0.hotmail.com [65.54.246.149]
bay0-omc1-s41.bay0.hotmail.com [65.54.246.113]
bay0-omc2-s39.bay0.hotmail.com [65.54.246.175]
bay0-omc3-s25.bay0.hotmail.com [65.54.246.225]
bay0-omc1-s15.bay0.hotmail.com [65.54.246.87]
bay0-omc2-s19.bay0.hotmail.com [65.54.246.155]
bay0-omc2-s14.bay0.hotmail.com [65.54.246.150]
bay0-omc2-s5.bay0.hotmail.com [65.54.246.141]
bay0-omc2-s38.bay0.hotmail.com [65.54.246.174]
bay0-omc3-s19.bay0.hotmail.com [65.54.246.219]
bay0-omc2-s9.bay0.hotmail.com [65.54.246.145]
bay0-omc1-s32.bay0.hotmail.com [65.54.246.104]
bay0-omc3-s12.bay0.hotmail.com [65.54.246.212]
bay0-omc2-s36.bay0.hotmail.com [65.54.246.172]
bay0-omc2-s40.bay0.hotmail.com [65.54.246.176]
bay0-omc1-s3.bay0.hotmail.com [65.54.246.75]
bay0-omc3-s31.bay0.hotmail.com [65.54.246.231]
bay0-omc3-s6.bay0.hotmail.com [65.54.246.206]
bay0-omc1-s29.bay0.hotmail.com [65.54.246.101]
bay0-omc2-s9.bay0.hotmail.com [65.54.246.145]
bay0-omc1-s34.bay0.hotmail.com [65.54.246.106]
bay0-omc3-s35.bay0.hotmail.com [65.54.246.235]
bay0-omc1-s21.bay0.hotmail.com [65.54.246.93]
bay0-omc1-s7.bay0.hotmail.com [65.54.246.79]
bay0-omc2-s7.bay0.hotmail.com [65.54.246.143]
bay0-omc1-s39.bay0.hotmail.com [65.54.246.111]
bay0-omc3-s38.bay0.hotmail.com [65.54.246.238]
bay0-omc3-s23.bay0.hotmail.com [65.54.246.223]
bay0-omc2-s1.bay0.hotmail.com [65.54.246.137]
bay0-omc2-s18.bay0.hotmail.com [65.54.246.154]
bay0-omc2-s38.bay0.hotmail.com [65.54.246.174]
bay0-omc1-s20.bay0.hotmail.com [65.54.246.92]
bay0-omc1-s11.bay0.hotmail.com [65.54.246.83]
bay0-omc3-s1.bay0.hotmail.com [65.54.246.201]
bay0-omc3-s21.bay0.hotmail.com [65.54.246.221]
bay0-omc2-s6.bay0.hotmail.com [65.54.246.142]
bay0-omc1-s13.bay0.hotmail.com [65.54.246.85]
bay0-omc2-s1.bay0.hotmail.com [65.54.246.137]
bay0-omc1-s25.bay0.hotmail.com [65.54.246.97]
bay0-omc2-s36.bay0.hotmail.com [65.54.246.172]
bay0-omc3-s7.bay0.hotmail.com [65.54.246.207]
bay0-omc3-s20.bay0.hotmail.com [65.54.246.220]
bay0-omc1-s35.bay0.hotmail.com [65.54.246.107]
bay0-omc2-s16.bay0.hotmail.com [65.54.246.152]
bay0-omc3-s40.bay0.hotmail.com [65.54.246.240]
bay0-omc3-s13.bay0.hotmail.com [65.54.246.213]
bay0-omc2-s6.bay0.hotmail.com [65.54.246.142]
s1.bay2.hotmail.com [65.54.246.99] (may be forged)
bay0-omc2-s5.bay0.hotmail.com [65.54.246.141]
bay0-omc1-s14.bay0.hotmail.com [65.54.246.86]
bay0-omc3-s22.bay0.hotmail.com [65.54.246.222]
bay0-omc1-s13.bay0.hotmail.com [65.54.246.85]
bay0-omc1-s17.bay0.hotmail.com [65.54.246.89]
bay0-omc2-s10.bay0.hotmail.com [65.54.246.146]
bay0-omc3-s3.bay0.hotmail.com [65.54.246.203]
bay0-omc3-s11.bay0.hotmail.com [65.54.246.211]
bay0-omc2-s26.bay0.hotmail.com [65.54.246.162]
bay0-omc3-s33.bay0.hotmail.com [65.54.246.233]
bay0-omc1-s40.bay0.hotmail.com [65.54.246.112]
bay0-omc1-s39.bay0.hotmail.com [65.54.246.111]
bay0-omc3-s15.bay0.hotmail.com [65.54.246.215]
bay0-omc2-s19.bay0.hotmail.com [65.54.246.155]
bay0-omc3-s38.bay0.hotmail.com [65.54.246.238]
bay0-omc2-s37.bay0.hotmail.com [65.54.246.173]
bay0-omc3-s24.bay0.hotmail.com [65.54.246.224]
bay0-omc1-s32.bay0.hotmail.com [65.54.246.104]
bay0-omc2-s33.bay0.hotmail.com [65.54.246.169]
bay0-omc1-s24.bay0.hotmail.com [65.54.246.96]
bay0-omc1-s2.bay0.hotmail.com [65.54.246.74]
bay0-omc2-s25.bay0.hotmail.com [65.54.246.161]
bay0-omc3-s35.bay0.hotmail.com [65.54.246.235]
bay0-omc2-s30.bay0.hotmail.com [65.54.246.166]
bay0-omc1-s6.bay0.hotmail.com [65.54.246.78]
bay0-omc3-s18.bay0.hotmail.com [65.54.246.218]
s1.bay2.hotmail.com [65.54.246.99] (may be forged)
bay0-omc2-s24.bay0.hotmail.com [65.54.246.160]
bay0-omc3-s16.bay0.hotmail.com [65.54.246.216]
bay0-omc2-s39.bay0.hotmail.com [65.54.246.175]
bay0-omc2-s1.bay0.hotmail.com [65.54.246.137]
bay0-omc2-s40.bay0.hotmail.com [65.54.246.176]
bay0-omc1-s17.bay0.hotmail.com [65.54.246.89]
bay0-omc3-s3.bay0.hotmail.com [65.54.246.203]
bay0-omc1-s30.bay0.hotmail.com [65.54.246.102]
bay0-omc3-s3.bay0.hotmail.com [65.54.246.203]
bay0-omc3-s9.bay0.hotmail.com [65.54.246.209]
bay0-omc2-s40.bay0.hotmail.com [65.54.246.176]
bay0-omc3-s36.bay0.hotmail.com [65.54.246.236]
bay0-omc2-s18.bay0.hotmail.com [65.54.246.154]
bay0-omc2-s29.bay0.hotmail.com [65.54.246.165]
bay0-omc2-s2.bay0.hotmail.com [65.54.246.138]
bay0-omc2-s16.bay0.hotmail.com [65.54.246.152]
bay0-omc1-s33.bay0.hotmail.com [65.54.246.105]
bay0-omc3-s19.bay0.hotmail.com [65.54.246.219]
bay0-omc2-s31.bay0.hotmail.com [65.54.246.167]
bay0-omc3-s23.bay0.hotmail.com [65.54.246.223]
bay0-omc2-s8.bay0.hotmail.com [65.54.246.144]
bay0-omc2-s1.bay0.hotmail.com [65.54.246.137]
bay0-omc3-s19.bay0.hotmail.com [65.54.246.219]
bay0-omc3-s39.bay0.hotmail.com [65.54.246.239]
bay0-omc3-s32.bay0.hotmail.com [65.54.246.232]
bay0-omc3-s33.bay0.hotmail.com [65.54.246.233]
bay0-omc1-s20.bay0.hotmail.com [65.54.246.92]