Re: Entourage at Internet Cafes

[Remo Del Bello]

Title: Re: Entourage at Internet Cafes

On 11/8/03 10:38 PM, Allen Watson deftly typed out:

> Now I'll confuse you further. OR maybe not; maybe this will make sense to
> you.
>
> I setup an account to use postfix to send via 127.0.0.1. I sent a message to
> myself at my Earthlink address, from a completely different address. It went
> out...and it came back, delivered to the Earthlink address. Is that because
> I am on Earthlink?

Earthlink doesn't perform return-path verification, so the email address you use makes no difference in this scenario. In your specific case, Allen, the only thing you have to worry about is Earthlink's port 25 blocking.

> I am going to send another quick Test message to you, Remo, using the
> postfix account. Let me know in the morning if you have received it or not.
> The subject will be "Postfix text to Remo".

I received the test message you sent. Looking at the message headers, it appears that you were connected via a Covad owned IP address:

Received: from mac.com (smtpin05-en2 [10.13.10.150])
 by ms21.mac.com (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep  8 2003))
 with ESMTP id <[EMAIL PROTECTED]> for [EMAIL PROTECTED]; Sat,
 08 Nov 2003 22:38:47 -0800 (PST)
Received: from Allen-Watsons-Computer.local
 (h-68-166-14-22.sttnwaho.dynamic.covad.net [68.166.14.22])
    by mac.com (Xserve/smtpin05/MantshX 3.0) with ESMTP id hA96ck3T011178    for
 <[EMAIL PROTECTED]>; Sat, 08 Nov 2003 22:38:46 -0800 (PST)
Received: from [127.0.0.1] (localhost [127.0.0.1])
    by Allen-Watsons-Computer.local (Postfix) with ESMTP id 2C7C78BC5A    for
 <[EMAIL PROTECTED]>; Sat, 08 Nov 2003 22:38:45 -0800 (PST)

These are read from bottom to top. The IP address your machine had, at the time the message was sent, was 68.166.14.22, which, if we perform a whois on:

whois –h whois.arin.net 68.166.14.22

Looks like an IP address owned by Covad Communications. If your ISP is indeed Earthlink, then they are apparently contracting out IP addresses from Covad in your area and may not have as much control with firewalling those IP addresses.

The bottom line is...running a local SMTP server appears to work for you at your present location. I just wouldn't expect it to work everywhere...

-Remo Del Bello

--
"...I was talking aloud to myself. A habit of the old: they choose the wisest person present to speak to; the long explanations needed by the young are wearying."
- Gandalf the White in "The Lord of the Rings: The Two Towers"