Virginia wrote (referring to a previous mail of Gerald E. Boyd):
> 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???
Your mail program uses some basic principles of TELNET protocol. It does not
use the default telnet client that ships with windows but man can use it and
get similar results.
> 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?
Communication to port 25 (SMTP) {1} and 110 (POP3) {2} can be established
through any telnet client. Accessing the net can be done through telnet but as
you wrote, it's "somewhat primitive".
However if someone studies the appropriate RFC {3} can surf a portion of web.
> One more question re Telnetting ... do all ISPs support it automatically?
Telnetting to POP3 accounts or to SMTP port usually is permitted from all ISPs
(at least, that's the sitution in Hellas).
Some ``free'' ISPs do not permit telnet communication to any other ports than
25, 110 due to security reasons.
> Does one need to get a special telnet address from them?
If a person wants a shell (unix account, mainly), he/she has to pay (almost
always) a fee.
+----------+
|References|
+----------+
1. ftp://ftp.isi.edu/in-notes//rfc2821.txt
2. ftp://ftp.isi.edu/in-notes/rfc1939.txt
3. ftp://ftp.isi.edu/in-notes/rfc2616.txt
--speed
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