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Subject: Re: dialup-LAN and domain-wide mail accounts
From: Wietse Venema (wietseporcupine.org)
Date: Thu Mar 09 2000 - 18:39:25 CST

Jochen Solbrig:
> I now ssh to my ISP and read the mail I sent to my account.
> In the message header the From: address is jolocal.net. But now replying
> won't work. Still logged in at my ISP I get a message from the postmaster
> with the subject "undeliverable mail" saying that user jolocal.net
> is unknown.

Right.

    % telnet mail.local.net smtp
    Trying 205.136.38.6...
    Connected to mail.local.net.
    Escape character is '^]'.
    ....skipped....
    mail from:<wietseporcupine.org>
    250 <wietseporcupine.org>... Sender ok
    rcpt to:<jolocal.net>
    550 <jolocal.net>... User unknown

What does this have to do with Postfix? Beats me.

        Wietse