At 07:34 AM 8/8/01 -0600, [EMAIL PROTECTED] wrote the following:
>On Monday 6 August Gerry Boyd wrote:
>
> >Telnet to the POP server...
>
> >+OK EarthLink POP server (version: EL_3_10 ) at
> >pop05.earthlink.net. <22180.965
> >[EMAIL PROTECTED]>
> >user geboyd
> >+OK Password required for geboyd.
> >pass xxxxxxxx
> >+OK geboyd has 2 messages (1379 octets).
>
>[snip]
>
> >+OK Pop server at pop05.earthlink.net signing off
>
>These messages are identical to those produced by my mail program (apart
>from the ISP), so I am wondering whether it also uses telnet to access my
>ISP's pop3 server???
No, the commands used to process the mail from a POP mail server are the
same whether you use Telnet or OE, Netscape, or Eudora. The e-mail client
just hides the connection and processing commands from you. If you use
Telnet, you have to do the work (use the commands) yourself.
See RFC 1939 Post Office Protocol Version 3
(http://www.faqs.org/rfcs/rfc1939.html)
>I can configure the program to perform all sorts of mail download and delete
>functions, or simply to send mail via smtp or access the net (this is
>somewhat primitive, though). Would all this be performed through telnet?
>Just curiosity ...
Telnet is an IP protocol that handles terminals. Among other functions, it
allows a user to log in to a remote computer from the user's local computer.
There is a specific telnet program for IBM mainframes called TN3270 (or
telnet 3270).
The basic Telnet protocol is defined in RFC 854
(http://www.faqs.org/rfcs/rfc854.html).
>One more question re Telnetting ... do all ISPs support it automatically?
>Does one need to get a special telnet address from them?
Telnet is available to all users (UNIX, Linux, Windows, DOS, OS/2, MacOS)
but ISPs may block some ports, specifically port 25 (SMTP). In addition,
unless you have a shell account you cannot logon to your domain via telnet.
The main thing about telnet versus your PC is that the processing is
occurring remotely. That is, when I telent to my domain (expita.com) I am
using all the processing power of Superb.Net's (my hosting ISP) UNIX
machines, not my own PC. For example, I use procmail to process my incoming
e-mail. I handle all my ACCMAIL mailing list details almost entirely
automatically. I also provide autoresponders they reply to and send files to
people requesting them. I also process and delete spam before I ever see it.
This is all done on my domain using Superb.Net's computer, not mine.
--
Gerry Boyd
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