Well I think I might have my own answer to my question.

It *appears* as though the messages that weren't getting graylisted were sent 
using tls.

On Aug 1, 2010, at 1:11 PM, Anthony Ercolano wrote:

> Please pardon me, if this comes through twice...
> 
> I've been using spamdyke for 6 months or so on my server without graylisting 
> and with no problems.
> 
> A few days ago I decided to add graylisting.  It seems to be working fine.  
> However, it exhibits a behavior that is confusing me.
> 
> I use tmda on the mail server.  (This means that I generally create email 
> address specific to a sender.  e.g. When I gave an email address to my cable 
> company to send me bill notifications it was of the form 
> [email protected])
> 
> I purchased a game that required an email address for activation purposes.  I 
> created a specific address for the game company and used it during the 
> signup. The service was then supposed to send me an activation email.  I 
> figured it would take at least 5 minutes (graylist-min-secs) to see the 
> email.  No!  The email came right through!  The left hand side of the email 
> address that the activation email was sent to was nowhere to be found in the 
> domain dir.  I recieve quite a few daily emails from various organizations, 
> all sent to different email address of the form 
> [email protected].  I still still seem to be getting 
> all of these daily emails.  However not all of these addresses are showing up 
> in the domain dir.
> 
> I then tried an experiment and sent myself an email using the game specific 
> email address from my gmail account.  Now, the left hand side of the address 
> showed up in the domain directory.
> 
> I have the feeling I'm missing something about graylisting.  Any ideas?
> 
> Thank you for your time,
> Tony
> 
> Config:
> Linux kernel 2.6.30.9
> An up to date gentoo using profile: default/linux/x86/10.0
> netqmail-1.06
> TMDA/1.1.12
> Spamdyke 4.0.10 (the most current stable gentoo ebuild)
> 
> my spamdyke.conf is as follows:
> 
> graylist-level=always-create-dir
> graylist-dir=/dyke/gray
> graylist-max-secs=1209600
> graylist-min-secs=300
> graylist-exception-ip-file=/dyke/gray-exception/exceptio-ip
> smtp-auth-level=none
> relay-level=no-check
> local-domains-file=/var/qmail/control/rcpthosts
> max-recipients=<some small number>
> log-level=error
> dns-blacklist-entry=zen.spamhaus.org
> reject-empty-rdns
> reject-unresolvable-rdns
> 
> The exception ip files simply has a list of secure servers that I control.
> 

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