[Mimedefang] Greylisting post-data (was Re: [PATCH] filter_data implementation)

Jeff Rife mimedefang at nabs.net
Thu May 28 09:34:13 EDT 2009

On 27 May 2009 at 19:01, - wrote:

> Perhaps so, but in RFC 5321 (and predecessors, 2821 and 821), the
> ONLY tempfail code valid at that point is 421, so if these programs
> didn't plan for it, they failed to follow the historical design for
> an SMTP client, and are thus completely broken. 

I see nothing that indicates that 421 is the only acceptable temporary 
fail code after "DATA".

Based on the full text of the RFCs and not just the examples, "450" 
seems to be a perfectly acceptable temporary failure.

In addition, the enhanced system status code (RFC 3463) returned should 
likely be "4.7.0" or "4.7.1".

Jeff Rife |  
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