Hi,
I'm using two dovecot pop3/imap proxies in front of our dovecot servers. Since some days I see many of the following errors in the logs of the two proxy-servers:
... dovecot: pop3-login: Error: proxy: Remote "IPV6-IP":110 disconnected: Connection closed: Connection reset by peer (state=0): user=<myuser>, method=PLAIN, rip=remote-ip, lip=localip ... dovecot: imap-login: Error: proxy: Remote "IPV6-IP":143 disconnected: Connection closed: Connection reset by peer (state=0): user=<myuser>, method=PLAIN, rip=remote-ip, lip=localip
...
When this happens the Client gets the following error from the proxy: -ERR [IN-USE] Account is temporarily unavailable.
System-details: OS: Debian Linux Proxy: 2.0.5-0~auto+23 Backend: 2.0.13-0~auto+54
Have you any idea what could cause this type of error?
Thanks and regards Urban Loesch
doveconf -n from one of our backendservers:
# 2.0.13 (02d97fb66047): /etc/dovecot/dovecot.conf # OS: Linux 2.6.38.8-vs2.3.0.37-rc17-rol-em64t-timerp x86_64 Debian 6.0.2 ext4 auth_cache_negative_ttl = 0 auth_cache_size = 40 M auth_cache_ttl = 12 hours auth_mechanisms = plain login auth_username_format = %Lu auth_verbose = yes deliver_log_format = msgid=%m: %$ %p %w disable_plaintext_auth = no login_trusted_networks = our Proxy IP's (v4 and v6) mail_gid = mailstore mail_location = mdbox:/home/vmail/%d/%n:INDEX=/home/dovecotindex/%d/%n mail_plugins = " quota mail_log notify zlib" mail_uid = mailstore managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave imapflags notify mdbox_rotate_size = 5 M passdb { args = /etc/dovecot/dovecot-sql-account.conf driver = sql } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size from mail_log_group_events = no quota = dict:Storage used::file:%h/dovecot-quota sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +notify +imapflags sieve_max_redirects = 10 zlib_save = gz zlib_save_level = 5 } protocols = imap pop3 lmtp sieve service imap-login { inet_listener imap { port = 143 } service_count = 0 vsz_limit = 256 M } service lmtp { inet_listener lmtp { address = * port = 24 } unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } vsz_limit = 512 M } service pop3-login { inet_listener pop3 { port = 110 } service_count = 0 vsz_limit = 256 M } ssl = no ssl_cert =