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List:       twig-devel
Subject:    Re: [twig-devel] twig-bug it seems real
From:       Jason Haar <Jason.Haar () trimble ! co ! nz>
Date:       2000-09-18 1:17:48
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On Tue, Sep 12, 2000 at 07:58:24PM -0000, Greg Ross wrote:
> 
>     This is not really a bug, but the definition of how SMTP works, any line 
> with a single . and a cr/lf on it terminates the message (that actually might 
> be a cr/lf . cr/lf, I can't remember the spec exactly off the top of my head).
> 

Err, if the problem is that Twig is NOT escaping a composed message that
contains "<CR><LF>.<CR><LF>" - then I'm afraid it IS a bug!

RFC822 explicitly states that SMTP transactions end with
"<CR><LF>.<CR><LF>", so if a composed message contains said sequence, it
must be rewritten as "<CR><LF>..<CR><LF>" so as to escape multilation. 

It goes without saying that the receiving SMTP server rewrites
"<CR><LF>..<CR><LF>"  to "<CR><LF>.<CR><LF>" to ensure no corruption results.


-- 
Cheers

Jason Haar

Unix/Network Specialist, Trimble NZ
Phone: +64 3 9635 377 Fax: +64 3 9635 417
               

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