Hello, the problem is: The users are system users (by Confixx) say webxpy. But behind it e-mail puts of course address like info at domain.de and so on. Everything functions perfectly, nevertheless, is following in the log. ? ? dovecot: auth: passwd file (jk): unknown user ? dovecot: auth: passwd file (jim.knuth): unknown user ? dovecot: auth: passwd file (info): unknown user ? and so on It is tried obviously, before the domain part in the passwd file to find user info ? However, there is in it only webxpy. How can I solve this dilemma, by which does this come then? auth_username_format = %n Thanks in advance as attached mine dovecot-n -- Mit freundlichen Gr??en, with kind regards, Jim Knuth -------------- next part -------------- # 2.2.0 (bafcb428167b): /etc/dovecot/dovecot.conf # OS: Linux 2.6.29.4-default i686 Debian 7.0 auth_master_user_separator = * auth_mechanisms = plain login auth_username_format = %n auth_verbose = yes auth_worker_max_count = 50 disable_plaintext_auth = no listen = * login_greeting = Mailserver ready. 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 namespace inbox { inbox = yes list = yes location = maildir:~/Maildir mailbox Ablage { auto = subscribe } mailbox Drafts { special_use = \Drafts } mailbox Entwurf { auto = subscribe special_use = \Drafts } mailbox Gesendet { auto = subscribe } mailbox Junk { special_use = \Junk } mailbox Papierkorb { auto = subscribe special_use = \Trash } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { special_use = \Trash } prefix = } passdb { args = username_format=%n driver = pam } plugin { quota = maildir:User quota quota_grace = 5%% quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Sorry, but Mailbox is full|Mailbox ist voll quota_status_success = DUNNO sieve = ~/.dovecot.sieve sieve_before = /etc/dovecot/sieve/global/global.sieve sieve_dir = ~/sieve sieve_global_dir = /etc/dovecot/sieve/global/ sieve_global_path = /etc/dovecot/sieve/global/global.sieve trash = /etc/dovecot/dovecot-trash.conf.ext } postmaster_address = postmaster at art-domains.de protocols = imap pop3 lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { mode = 0600 } } service imap-login { client_limit = 128 process_limit = 256 service_count = 0 vsz_limit = 64 M } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 1 vsz_limit = 64 M } service pop3-login { client_limit = 128 process_limit = 256 service_count = 0 vsz_limit = 64 M } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { address = 127.0.0.1 port = 12340 } } ssl_cert = </etc/dovecot/certs/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { args = username_format=%n /etc/dovecot/passwd.quota driver = passwd-file } verbose_proctitle = yes protocol sieve { mail_max_userip_connections = 10 managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 } protocol imap { imap_client_workarounds = mail_fsync = never mail_plugins = " quota imap_quota trash" } protocol pop3 { mail_fsync = never mail_plugins = " quota trash" pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_lock_session = yes pop3_uidl_format = %v-%u } protocol lda { mail_fsync = optimized mail_plugins = " quota sieve trash" postmaster_address = postmaster at art-domains.de } protocol lmtp { mail_plugins = " quota sieve trash" }