🚀 go-pugleaf

Housing Dept (jhomer@bcchsg.demon.co.uk) wrote:
> I am very interested in writing a SMTP server.  The protocol itself is very
> simple, but I can not work out, how when in TURNPIKE software you set the
> email names up, how the information is then transfered to the
> Post.demon.co.uk mail server.

it is not transferred, the point of SMTP is that the sending client
has no knowledge of the acceptable mail names at a host until to
contacts the host server and attempts to deliver the mail.

The sending system needs no knowledge of the acceptable email names
at the destination, which gives SMTP an advantage over POP3, since
POP3 needs to know the accetpable names in advance to create
mailboxes for them.

[Some ISP's overcome this by placing all mail for a host in a
single mailbox. This does allow all mail for a host to be accepted
without prior knowledge of the names, however as all the mail is in
a single mailbox, privacy between mail users at the site is
compormised.]

> Can anyone help?

I suggest a deeper study of the protocol definition documents :)

-- 
Malcolm S. Muir                                Demon Internet Ltd.
Sunderland                                     322 Regents Park Road
England                                        London N3 2QQ