[Mimedefang] MTA failing on multiline SMTP greetings

Jan Pieter Cornet johnpc at xs4all.nl
Sat Aug 7 09:21:05 EDT 2004


On Fri, Aug 06, 2004 at 08:14:38AM -0700, Jeremy Mates wrote:
> * Kevin A. McGrail <kmcgrail at pccc.com>
> > Before I jump on that bandwagon, I'd like to know if it causes any
> > legit MTAs to fall over dead as well.
> 
> I would most certainly assume that certain MTA fail to handle the RFC
> properly, and fail if a multiple line greeting is encountered. Old
> versions of Exchange should qualify, if memory serves.

Probably the same versions that are really hard (or impossible) to NOT
configure as an open relay. Or that have gaping security holes.

I'd construe this as a feature, then ;)

-- 
#!perl -wpl # mmfppfmpmmpp mmpffm <pmmppfmfpppppfmmmf at fpffmm4mmmpmfpmf.ppppmf>
$p=3-2*/[^\W\dmpf_]/i;s.[a-z]{$p}.vec($f=join('',$p-1?chr(sub{$_[0]*9+$_[1]*3+
$_[2]}->(map{/p|f/i+/f/i}split//,$&)+97):qw(m p f)[map{((ord$&)%32-1)/$_%3}(9,
3,1)]),5,1)='`'lt$&;$f.eig;                                # Jan-Pieter Cornet



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