Why is Novell Groupwise broken?

dcc-admin@rhyolite.com <mailto:dcc-admin@rhyolite.com> wrote:
> The e-mail server that I've had to whitelist for greylisting most
> frequently is Novell GroupWise Internet Agent.  It seems to ignore the
> temporary delivery failure response code, and assume that the message
> was successfully delivered.  The result is that the e-mail just
> disappears.  I have requested each site to notify Novell of the
> problem, but I suspect that most don't care to do so once I whitelist
> the site.  They also may not have sufficient understanding of the
> problem to file a definitive bug report.
> 
> Does anyone have a Novell Groupwise system that they could use to
> verify that it violates the SMTP standard for temporary failure after
> the DATA portion?  Could you do this and file a bug report with
> Novell?

See http://support.novell.com/cgi-bin/search/searchtid.cgi?/10084802.htm

(linked from http://projects.puremagic.com/greylisting/ at the bottom)

Regards,

Ugo