On Wed, Oct 27, 2010 at 07:20:52PM +0200, Laurent CARON wrote: > On Wed, Oct 27, 2010 at 01:15:13PM -0400, Victor Duchovni wrote: > > If the configuration was the same with 2.4.5, it did not appear after > > the upgrade, rather you were testing/looking harder, and the mix > > of clients or client software versions may have also changed since > > you last looked closely. The on-the-wire behaviour of ask_ccert > > has not changed, and Postfix 2.4 fully supports this feature. > > The config is exactly the same and didn't change. > > The clients didn't change their config either. > > Previous version was a debian package (postfix 2.4.5-4~bpo40+1). > Maybe a debian customization or patch has something to do with it. > > Will do some more tests ASAP.
Did you change OpenSSL versions? The SMTP server's CAfile, extends the built-in list of CA's used by OpenSSL, so using a newer OpenSSL installation, can change the mix of CAs sent by the server in a client cert request. Client behaviour may depend on wether the CA (DN) list is empty or not, and perhaps on the specific content or length. -- Viktor.