[JDEV] File transfers

[Gallo, Felix S.]

Mike angrily flames:
> How's that?  POP AND IMAP are protocols for Clients to talk to
> Servers to access stores of messages and attachments.  A Pop or
> IMAP Client DOES NOT talk to another Pop or IMAP Client...EVER...
> SMTP is the way you SEND messages to those stores and every single
> email message you send is transferred using SMTP and BTW SendMail
> is just an SMTP Program for sending mail, it has nothing to do
> with "bulk".

Oh dear, I appear to have killed your cat or something with my
message.  I apologize.

The distinction I was making -- apparently not well enough for you
to understand -- was that in SMTP, there is usually minimal conversation;
the conversation is, in 99% of cases, the same between the two partners,
and the task is a batch-like, bulk task usually involving one transaction.

By comparison, POP/IMAP are chatty, and they tend to stay connected for
multiple
discrete 'transactions'.  This is more 'peer'-like behavior, a la Jabber,
etc.
There isn't a hard-and-fast definition of what a server is and what a client
is
any more; more and more we're talking shades of grey.  Certainly it's
nothing to
get screamy about.

> Have you ever setup an email client?  

I think so.  Over the course of my 17 year career as a Unix hacker, I've
also written about 20 sendmail.cf files, most from scratch (starting with
a UUCP feed), as well as written about a million lines of Perl, including
the first opcode-based safe remote execution protocol in any language
anywhere.  Somewhere in there may have been a few e-mail clients on
desktops.

> If you did you had to setup the email server for getting your email
> and choose POP3 or IMAP4 and then an SMTP server for outgoing,

Well, maybe on Windows.  I distinctly remember not having to do that
on Xenix, SCO Unix, Unixware, Irix, HP/UX, Domain/OS, RSTS/E, VMS,
Digital Unix, Linux .96c, QNX, VxWorks, *BSD, BSDI, Netware, or
PalmOS.  For that matter, I didn't have to do that on Windows, either.

> or
> if you leave that blank it tries to use the same server you setup
> for incoming.

Not all the world is Outlook Express.

> If YOU want to add value, don't spout about things you obviously know
> NOTHING about.  Read the specifications about POP3, IMAP4 AND SMTP and
> you can find those at http://www.ietf.org

Thanks for the pointer.  So what exactly is Netscape's MTA again?

> I completely agree it depends on where you are standing and you are
standing in the dark. 

It happens to the best of us.  Good luck with AppsAsPeers.com; if you need
any pointers, I have some work I did in 1996 which could be relevant.

F.


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