Question about DKIM and amavis (dkim_new versus dkim_sd)

[zahn]

Hello

I noticed in the maillog that most sender use for example (note the 
dkim_sd):

dkim_sd=20110523:email.jacquielawson.com

However if I send my own mail I get (note the dkim_new)

dkim_new=foo:akadia.com

So the question: What is the difference between: dkim_sd and dkim_new ?
What must be changed in amavis to get the: dkim_sd instead of the dkim_new ?

-- 

Schöne Grüsse aus Oberdiessbach Martin Zahn

Akadia AG
Martin Zahn
Software Ing. HTL
Oracle Certificate Professional
Information Technology
Fichtenweg 10
CH-3672 Oberdiessbach

Tel: +41 79 410 27 87
Web: www.akadia.com
E-Mail: martin.zahn at akadia.com