[Dovecot] POP3 and AVG

[Rick Romero]

Is anyone running v 1.2.3 and have clients with AVG email scanning?
I upgraded a server a few weeks ago (which ran Dovecot and the Maildir  
mail store), and all of a sudden clients with AVG were unable to use  
POP. Essentially, AVG freezes.  The server upgrade was from FreeBSD 7  
to OpenSolaris 2009.06, and I did upgrade the Dovecot version from  
1.1.17 to 1.2.3, but kept the same config.  When I point those users  
to a port running qmail-popup on another machine (NFS mounting the new  
server), they work fine.  I'm sure I reverted to 1.1.17 during the  
initial hectic days, with no change.  Of course, I'm also sure I had a  
few of the users test the alternate qmail-popup server, maybe they did  
it wrong. :(

Any thoughts?   Should I attach compile configs?

#/usr/local/sbin/dovecot -n

# 1.2.3: /usr/local/etc/dovecot.conf
# OS: SunOS 5.11 i86pc
base_dir: /opt/csw/dovecot/
protocols: imap imaps pop3s pop3
ssl_cert_file: /etc/ssl/mail.rapid.pem
ssl_key_file: /etc/ssl/mail.rapid.key
ssl_key_password: password
disable_plaintext_auth: no
shutdown_clients: no
login_dir: /opt/csw/dovecot//login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
login_greeting: VFEmail.net ready.
login_process_per_connection: no
login_process_size: 256
login_processes_count: 6
login_max_processes_count: 512
login_max_connections: 384
mail_max_userip_connections: 25
verbose_proctitle: yes
first_valid_uid: 89
last_valid_uid: 89
first_valid_gid: 89
last_valid_gid: 89
mail_privileged_group: mail
fsync_disable: yes
mail_executable(default): /usr/local/libexec/dovecot/rawlog  
/usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/rawlog  
/usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/rawlog  
/usr/local/libexec/dovecot/pop3
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(pop3): quota
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
imap_client_workarounds(default): delay-newmail outlook-idle  
netscape-eoh tb-extra-mailbox-sep
imap_client_workarounds(imap): delay-newmail outlook-idle netscape-eoh  
tb-extra-mailbox-sep
imap_client_workarounds(pop3):
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
namespace:
   type: private
   separator: .
   prefix: INBOX.
   inbox: yes
   list: yes
   subscriptions: yes
lda:
   postmaster_address: postmaster at vfemail.net
   mail_plugin_dir: /usr/local/lib/dovecot/lda
   sendmail_path: /var/qmail/bin/sendmail
   auth_socket_path: /opt/csw/dovecot/auth-master
auth default:
   mechanisms: plain login digest-md5 cram-md5
   user: vpopmail
   username_translation: %@
   passdb:
     driver: vpopmail
   userdb:
     driver: passwd
   userdb:
     driver: vpopmail
   socket:
     type: listen
     master:
       path: /opt/csw/dovecot/auth-master
       mode: 384
       user: vpopmail
plugin:
   quota: maildir