Baxil [bakh-HEEL'], n. - I need some strange info

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October 24th, 2007

12:38 pm

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I need some strange info
Do any of my readers work at Google, or know anyone who does, or know anyone who knows someone that does?

I need to know the IP block of their *outgoing* mail servers (specifically for Google Groups, but those mail servers probably cover their other services as well). We're running greylisting here at our ISP, and it's working fantastically -- but the delays it's causing to Google Groups e-mail notifications are giving one of our customers problems, so I want to preemptively whitelist their mail server IPs.

There's absolutely nothing relevant on their support pages (as might be expected). I can't get through to a live person at their corporate phone number. I just need a starting place.

(Comments to this post are screened in case you have a private phone number to give me. I'll update here if I can get things fixed.)

--
ETA: Possibly solved; see comments. (Fix time: 1/2 hour. I love the Internet.) Confirmation or further refinement would still be appreciated.

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Tags: geekery, requests, work

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From:	baxil
Date:	October 24th, 2007 08:09 pm (UTC)

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Thanks - I'll drop them a line.

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From:	balinares
Date:	October 24th, 2007 08:03 pm (UTC)

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Their SPF entry claims that anything @google.com has to come from one of the following subnets: 216.239.32.0/19, 64.233.160.0/19, 66.249.80.0/20, 72.14.192.0/18, 209.85.128.0/17, 66.102.0.0/20, 74.125.0.0/16. Perhaps that's a good starting point?

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From:	baxil
Date:	October 24th, 2007 08:18 pm (UTC)

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Oh, durr. X-p I should have tried SPF.

I preemptively gave up on it because we had the same problem yesterday with Washington Mutual, their SPF data was blank, and not only are they equally hard to reach, they're retards about it.

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From:	balinares
Date:	October 24th, 2007 08:40 pm (UTC)

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... Alrighto, given the level of retardation expressed therein, I'd actually have been surprised that those guys should know about SPF. *g* Holy crap. "I know a thing or two about computers", says he. So painfully many people in this field remind me of this study. :/

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From:	scotis_man
Date:	October 24th, 2007 08:13 pm (UTC)

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You could always look at the mail header to see where it is leaving the google network and trace the IP that way.

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From:	baxil
Date:	October 24th, 2007 08:19 pm (UTC)

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Thanks for the suggestion; already tried. I have four different source IPs, and I don't know how big the IP block is, or whether the one they're in is the only one.

See above, though.

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From:	starlightforest
Date:	October 25th, 2007 08:53 am (UTC)

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Closest is that my favourite barista at the Starbucks down the street got a QA job with Google. I guess he's doing laps in that visible-from-satellite pool and laughing at the rest of us now.

If I can speak of a "favourite barista at Starbucks" then I am going there too much.

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