No email encrypted/signed with AnnouncerEmailEncryption

[Alexis de BRUYN]

I am trying to set up the ​Announcer cryptographic capabilities with Trac 0.12.1 on Debian Squeeze.

My AnnouncerPlugin is working fine with :

[announcer]
admit_domains = 
always_notify_owner = true
always_notify_reporter = true
always_notify_updater = true
ignore_domains = 
mime_encoding = base64
smtp_always_bcc = 
smtp_always_cc = 
smtp_default_domain = 
smtp_enabled = true
smtp_from = trac@localhost
smtp_from_name = 
smtp_password = 
smtp_port = 25
smtp_replyto = 
smtp_server = localhost
smtp_subject_prefix = __default__
smtp_user = 
ticket_subject_template = $prefix #$ticket.id: $summary
use_public_cc = false
use_short_addr = false
use_tls = false

Which was my previous [notification] configuration.

I have followed the ​steps for the install of AnnouncerEmailEncryption :

1. gnupg & python-gnupg have been installed ;
2. The AnnouncerEmailEncryption configuration has been added in my trac.ini :

   [announcer]
   email_crypto = sign,encrypt
   gpg_home = /var/trac/project/test/gnupg
   gpg_signing_key = 7AA4861C
   smtp_replyto = trac@localhost
   

3. I have created and exported a gpg public key in /var/trac/project/test/gnupg (which gpg_signing_key was previously set) ;
4. And copy all my user gpg public keys.

Received emails are not signed/encrypted and I do not see any errors in my debug trac log file.

What did I missed in my pgp/announcerplugin configuration ?