Hi, We have kind of same problem like that thread: http://www.howtoforge.com/forums/showthread.php?t=65760 We have multiserver setup, adminpanel, mailserver, webservers and nameservers. Problem is that masterserver don't send quota warnings to clients, it sends to the admin email. Masterserver mail configuration part in the master database. Code: [mail] module=postfix_mysql maildir_path=/var/vmail/[domain]/[localpart] homedir_path=/var/vmail pop3_imap_daemon=courier mail_filter_syntax=maildrop mailuser_uid=5000 mailuser_gid=5000 mailuser_name=vmail mailuser_group=vmail relayhost= relayhost_user= relayhost_password= mailbox_size_limit=0 message_size_limit=0 mailbox_quota_stats=y realtime_blackhole_list= overquota_notify_admin=y overquota_notify_client=y overquota_notify_freq=7 overquota_notify_onok=n Mail log shows only that it sent mail to the admin mail. No other errors. Admin mail is in the same server as the client mailboxes. Code: Dec 10 00:30:01 postfix/qmgr: 754F3A006D: from=<[email protected] Can i somehow debug what goes wrong or what happens? It started when we moved masterserver from Opensuse to Debian. All the others things work fine. We don't use webserver quota warnings, so i don't know if that works. Regards.