asterisk users - Nov 2005 - Voicemail notifications alwats sent as asterisk@hostname

Hi,

  I have a problem with e-mail notifications. For some reason Asterisk 
does not use the serveremail configuration when sending e-mails 
notifications. it always send it using asterisk@hostname.

My configuration:
pbxskip=yes                     ; Don't put [PBX]: in the subject line
serveremail=asterisk123@privalodc.com
fromstring=Voicemail System ; Real name of email sender
maxmessage=180                  ; max length of vm message
minmessage=3                            ; Minimum length of a voicemail 
message in seconds
maxsilence=5                    ; Wait for 5 silent seconds and end the 
voicemail
silencethreshold=128            ; What do we consider to be silence
skipms=3000                                     ; How many miliseconds 
to skip forward/back when rew/ff in message playback
review=yes                                      ; Allow sender to 
review/rerecord their message before saving it
operator=yes                            ; Allow caller to press 0

Exim log when sending an e-mail:
Nov 24 11:44:21 privalodc exim[8501]: 2005-11-24 11:44:21 
1EfKCr-0002D5-N1 ** acourchesne@privalodc.com R=dnslookup T=remote_smtp: 
SMTP error from remote mail server after RCPT 
TO:<acourchesne@privalodc.com>: host mail.privalodc.com 
[207.115.102.XX]: 504 <asterisk@testpbx>: Sender address rejected: need 
fully-qualified address

Any ideas?

Andre