[YLUG] Gaffer's email headers

Doug Winter doug at isotoma.com
Mon Mar 5 15:01:24 GMT 2007


If you read the Received headers in reverse order, you can see what 
happened (read from the bottom up):

8. it was delivered to a final destination on a criticalpath system run 
by tucows.  you got it from here by IMAP using Kmail.

> Received: from n080.sc1.he.tucows.com (64.97.168.34) by 
> n115.sc1.cp.net (7.2.066)
>         id 450C6C1201E71414 for play.net at virgin.net; Sun, 4 Mar 2007 
> 20:32:25 +0000

7. they sent it to a tucows inbound server, which presumably virgin use 
as an outsourced hosting provider

> Received: from nf-out-0910.google.com (64.233.182.187) by 
> n080.sc1.he.tucows.com (7.2.069.1)
>         id 45E8540D001ECE8C for play.net at virgin.net; Sun, 4 Mar 2007 
> 20:32:25 +0000

6. out again, through one of their zillion outbound relays

> Received: by nf-out-0910.google.com with SMTP id y38so1873323nfb
>         for <play.net at virgin.net>; Sun, 04 Mar 2007 12:32:25 -0800 
> (PST)

5. ...this machine knows this is an alias for play.net at virgin.net, so it 
sends it on some more

> Received: by 10.82.135.13 with SMTP id i13mr4142067bud.1173040344078;
>         Sun, 04 Mar 2007 12:32:24 -0800 (PST)
> X-Forwarded-To: play.net at virgin.net
> X-Forwarded-For: baron at linuxmaniac.net play.net at virgin.net

4. the mail was delivered to baron at linuxmaniac.net at google, but...

> Delivered-To: baron at linuxmaniac.net

3. it got passed around some more

> Received: by 10.82.171.11 with SMTP id t11cs402214bue;
>         Sun, 4 Mar 2007 12:32:23 -0800 (PST)

2. it got passed around inside google

> Received: by 10.66.244.11 with SMTP id r11mr8859665ugh.1173040343468;
>         Sun, 04 Mar 2007 12:32:23 -0800 (PST)

1. mail.petitions.pm.gov.uk sent the email, and it went to google, which 
is the MX for linuxmaniac.net

> Received: from mail.petitions.pm.gov.uk (mail.petitions.pm.gov.uk 
> [82.111.230.221])
>         by mx.google.com with SMTP id 
> e1si5942518ugf.2007.03.04.12.32.23;
>         Sun, 04 Mar 2007 12:32:23 -0800 (PST)


> As can be seen, there is a great deal of information about the alias 
> and ISP's that I use. 

Only because it passed through all of those ISPs ;)

Cheers,

Doug.

-- 
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