Hi to all,

i migrate an imap server from courier-imap to dovecot 1.1.13. After the migration i have often this error in imap communication:

• NO Mailbox is locked, will abort in 122 seconds
• NO Mailbox is locked, will abort in 92 seconds
• NO Mailbox is locked, will abort in 62 seconds
• NO Mailbox is locked, will abort in 32 seconds

I use maildir and all data are in nfs server.

My dovecot configuration is:

protocols = imap pop3 imaps pop3s log_timestamp = "%Y-%m-%d %H:%M:%S " ssl_cert_file = /opt/dovecot/certs/imapd.pem ssl_key_file = /opt/dovecot/certs/imapd.pem login_user = dovecot mail_location = maildir:%h/Maildir mail_uid = 104 mail_gid = 102 mail_privileged_group = vmail first_valid_uid = 0 last_valid_uid = 0 first_valid_gid = 0 last_valid_gid = 0 ssl_disable = no disable_plaintext_auth = no mail_drop_priv_before_exec=yes log_path = /opt/dovecot/logs/dovecot.log mail_nfs_index = yes mail_nfs_storage = yes mmap_disable = yes

protocol imap { listen = *:143 mail_plugins = quota imap_quota ssl_listen = *:993 mail_executable = /opt/dovecot/libexec/dovecot/automigrateimap }

protocol pop3 { listen = *:110 pop3_uidl_format = UID%u-%v ssl_listen = *:995 mail_executable = /opt/dovecot/libexec/dovecot/automigratepop3 mail_plugins = quota }

auth_debug = yes auth_debug_passwords = yes auth default { mechanisms = plain # passdb pam { # } passdb ldap { args = /opt/dovecot/etc/dovecot-ldap.conf } # userdb passwd { # } userdb ldap { args = /opt/dovecot/etc/dovecot-ldap.conf } user = root }

dict { }

plugin { quota = maildir quota_rule2 = Trash:storage=100M }

namespace private { separator = . prefix = INBOX. inbox = yes }

Have You any idea?

Thanks