[ On Thursday, November 6, 2003 at 00:04:53 (+0000), Alan J. Flavell wrote: ]
> Subject: Re: [Exim] OT: Problem sending mail to verizon.net
>
> On Wed, 5 Nov 2003, Greg A. Woods wrote:
> >
> > SMTP is not a "real-time" protocol -- it's a store and forward protocol.
>
> It may have been intended that way, back when all the participating
> sites could be deemed well-intentioned - and quite ready to hang any
> offending users of theirs from the flagpole. Those times are long
> gone
SMTP _IS_ a store and forward protocol, BY DESIGN. PERIOD.
Glomming on active SMTP-based sender address verification is not a
design change -- it's a very bad and stupid hack that violates these
fundamental design limits in the SMTP protocol. It causes serious and
now well documented interoperability problems on several levels.
--
Greg A. Woods
+1 416 218-0098 VE3TCP RoboHack <woods@???>
Planix, Inc. <woods@???> Secrets of the Weird <woods@???>
