Re: Transparency

That's the problem - SMTP is not math. :-)

Sender:

   while (not end of file) 
     s = GetNextLine()
     if (s == ".") then s = ".."
     send s+CRLF
   wend
   send "."+CRLF

Receiver:

   while (not end of socket) 
     s = GetNextLineFromSocket()
     if (s == ".") then break
     if (s == "..") then s = "."
     savetofile s+CRLF
   wend


---
HLS

----- Original Message ----- 
From: "Tulsi Ram Mayala" <tulsi_rammayala(_at_)strongmail(_dot_)com>
To: <Valdis(_dot_)Kletnieks(_at_)vt(_dot_)edu>
Cc: <ietf-smtp(_at_)imc(_dot_)org>
Sent: Tuesday, May 16, 2006 12:43 AM
Subject: RE: Transparency


> Why should an MTA remove a dot in case of technically invalid '.one'?
> What would be its significance? RFC should not mandate any unnecessary
> operation.
>
> It is like a mathematical function and its inverse function:
> f(x) = x+1, where x>=1
> f'(y) = y-1, where y>1
>
> NOTE the input set precondition in the derived inverse function. If
> f'(y) is not defined for y=1 then how can it be expected to give a
> result for y=1.