Here are some of my config files: 1. /etc/php.ini file_uploads = On also tried: file_uploads = 1 upload_max_filesize = 32M safe_mode = Off max_execution_time = 60 max_input_time = 120 memory_limit = 32M post_max_size = 32M sendmail_path = /usr/sbin/sendmail -t -i 2. /etc/squirrelmail/config.php $domain = 'localhost'; $imapServerAddress = 'localhost'; $smtpServerAddress = 'localhost'; $imapPort = 143; $useSendmail = true; $smtpPort = 25; $sendmail_path = '/usr/sbin/sendmail'; $pop_before_smtp = false; $imap_server_type = 'uw'; $invert_time = false; $optional_delimiter = '/'; also tried: $domain = 'full-server-name'; $imapServerAddress = 'full-server-name'; $smtpServerAddress = 'full-server-name'; 3. /etc/dovecot.conf protocols = imap imaps pop3 pop3s imap_listen = [::] pop3_listen = [::] also tried: imap_listen = "*" Anything wrong? Thanks! Hongwei Li