[Mimedefang] Email 101

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--- On Tue, 3/16/10, David F. Skoll <dfs at roaringpenguin.com> wrote:
> ...
> > Page 9 example: You should not use local parts that have special
> > meanings.  Replace "devnull" with something else.
> 
> What makes you think "devnull" has a special meaning? :-)

"devnull" => "/dev/null" = "bit bucket" => non-replyable address.
 
> > 5.3: Actually, there are FIVE classes of reply codes.  You left out
> > the 1xx level.
> 
> 1xx is not used in base SMTP.  I'm also not aware of any ESMTP extensions
> that use 1xx reply codes, but I'd be interested in hearing if there are any.

Granted, no live examples as they convey an intermediate status.  However, to be true to the RFC's and STD 10, there are still 5.
 
> > 6.1.2 - Received header.
> > You should NOT include examples of syntactically invalid received headers.
> 
> Those are (slightly edited) examples of Received: headers that I really
> did receive.  The goal here is to teach novices how to interpret
> real-world headers.  It isn't to impress upon them the RFC-compliant
> syntax of theoretical Received: headers.

Just because you have received them doesn't make them valid.  ;-)

I understand your point, but let's do it with examples that are valid under the given syntax.