[Dovecot] mutt freezes

[Manoel Prazeres]

Hi

Sometimes mutt freezes saying "Closing connection to imap.impa.br...".

Any clue?

Thanks
Manoel

===
My configuration:

User-Agent: Mutt/1.5.21 (2010-09-15)

# dovecot -n
# 2.0.8: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.18-194.26.1.el5xen x86_64 CentOS release 5.5 (Final)
default_client_limit = 1027
default_process_limit = 512
first_valid_gid = 1000
first_valid_uid = 1001
log_path = /var/log/imapd/imapd.log
log_timestamp = "%b %e %H:%M:%S markov "
login_log_format_elements = user=<%u> method=%m pid=%p rip=%r lip=%l %c
mail_location = mbox:%h/mail:INBOX=%h/mbox:INDEX=/var/local/imapd.indexes/%u
mail_log_prefix = "%Us(%u): pid=%p, rip=%r, lip=%l, "
mbox_write_locks = fcntl
passdb {
   args = /etc/dovecot/deny-users
   deny = yes
   driver = passwd-file
}
passdb {
   driver = pam
}
protocols = imap
service imap-login {
   process_min_avail = 32
}
service imap {
   process_limit = 512
}
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
   driver = passwd
}
protocol imap {
   mail_max_userip_connections = 5
}