Re: [cobalt-users] SMTP authentification

["Gareth Bromley" <gbromley@xxxxxxxxxxx>]

> SMTP does not use authentification, this is why you set pop before relay
to
> authenticate the user and allow them to send mail for a time period after
> pop authentification.
SMTP RFC2554  stats:
"This document defines an SMTP service extension [ESMTP] whereby an
SMTP client may indicate an authentication mechanism to the server,
perform an authentication protocol exchange, and optionally negotiate
a security layer for subsequent protocol interactions.  This
extension is a profile of the Simple Authentication and Security
Layer [SASL]."

So SMTP servers complying to this RFC DO support SMTP authentication.

The use of POP before relay is just a means to 'hack' user authentication
into SMTP to allow relaying from 'valid users'.

Just my 2pence

Gareth