On 5/11/10 4:31 PM, mouss wrote: > > hmmm. here: > $ host 74.125.45.27 > 27.45.125.74.in-addr.arpa domain name pointer yx-in-f27.1e100.net. > $ host gmail-smtp-in.l.google.com > gmail-smtp-in.l.google.com has address 209.85.227.27 > > 74.125.45.27 is a google IP, but I don't see it listed as the IP of one > of the MX's.
Whereas I have: bash-3.2$ host 74.125.45.27 27.45.125.74.in-addr.arpa domain name pointer yx-in-f27.1e100.net. bash-3.2$ host gmail-smtp-in.l.google.com gmail-smtp-in.l.google.com has address 74.125.155.27 bash-3.2$ This is because Google use geolocation IPs. For specific hosts you will obtain the IP that appears to be "closest" to your network. Regards, Ben
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