Date: Tue, 02 Oct 2001 13:49:12 -0600 From: Lyndon Nerenberg <lyndon@atg.aciworldwide.com> To: nate@yogotech.com (Nate Williams) Cc: current@freebsd.org Subject: Re: uucp user shell and home directory Message-ID: <200110021949.f92JnC8f023243@atg.aciworldwide.com> In-Reply-To: Message from Nate Williams <nate@yogotech.com> of "Tue, 02 Oct 2001 13:25:00 MDT." <15290.5260.610951.681033@nomad.yogotech.com>
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Okay, here's why I use UUCP rather than POP (or in my case, IMAP).
I make use of detail addressing to filter my mail. For example:
RCPT TO Delivery location
------- -----------------
lyndon /var/mail/lyndon
lyndon+imap ${HOME}/Mail/imap/... (MH)
lyndon+sysalert /var/mail/lyndon + an X11 on-screen alert
lists+freebsd-current LMTP to the lists/freebsd/current folder
on the local IMAP server
Not all of the filtering I require can be done based on the MAIL FROM.
I have to have access to the RCPT TO address that triggered the delivery
in order to do some of this filtering. While you can usually determine
the MAIL FROM by examining the Return-Path: header in the message, you
cannot determine the RCPT TO address by looking inside of the RFC2822
message headers. This eliminates POP and IMAP for "delivery" of this
mail. Also, I *do* have delivery to multiple user accounts on my laptop.
Polling for these multiple "users" from another mail server would be
inefficient and wasteful of resources.
For the times that I'm directly connected to my regular LAN at my
regular IP address, mail flows in via SMTP directly to the laptop.
I don't go polling any IMAP or POP servers to collect my mail.
When I'm not connected to the usual network, I don't want to (nor
should I have to) change how I retrieve my mail. And I don't have
to.
When I'm on the road (and direct SMTP delivery fails because I'm
not reachable at the usual IP address), my mail is delivered to
the MX backup host. The MTA there queues my mail up for UUCP
delivery. When I get the chance to get connected, be it via IP or
direct dialup to the backup MX server, I fire up a UUCP session
which pulls down incoming mail for the laptop (and also sends any
queued outbound mail), all the while preserving the sender and
recipient *envelope* addresses, which are critical to my filtering
needs. All without requiring *any* changes in how I handle my
email.
IMAP and POP are not message transport protocols. If you're using
them as such you need to take a close look at your email environment.
--lyndon
>What about all the people who hoarded tonnes of spam in their bunkers?
I hoard spam on my hard drive. When I heard about the coming
Y2K worries, I downloaded a lifetime supply from the net.
-- Charlie Gibbs in alt.folklore.computers
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