Hello all, i'm using: Ubuntu 14.04 x64 IspConfig 3.0.5.4 i can't send and receive email, tried google the solution more than 8 days,and find some,but all solution not work! Can someone help me ? many thanks! mail.err Code: Dec 24 11:55:25 server postfix/postfix-script[23082]: fatal: cannot execute /usr/sbin/postconf! Dec 24 12:45:01 server postfix/smtpd[27085]: fatal: no SASL authentication mechanisms mail.log: Code: Dec 25 13:08:31 server dovecot: master: Dovecot v2.2.9 starting up (core dumps disabled) Dec 25 13:08:31 server dovecot: ssl-params: Generating SSL parameters Dec 25 13:08:33 server dovecot: ssl-params: SSL parameters regeneration completed Dec 25 13:08:50 server postfix/master[12762]: daemon started -- version 2.11.0, configuration /etc/postfix Dec 25 13:08:53 server amavis[12994]: starting. /usr/sbin/amavisd-new at server.server.com amavisd-new-2.7.1 (20120429), Unicode aware, LANG="en_US.UTF-8" Dec 25 13:08:53 server amavis[12999]: Net::Server: Group Not Defined. Defaulting to EGID '123 123' Dec 25 13:08:53 server amavis[12999]: Net::Server: User Not Defined. Defaulting to EUID '113' Dec 25 13:08:53 server amavis[12999]: Module Amavis::Conf 2.303 Dec 25 13:08:53 server amavis[12999]: Module Archive::Zip 1.30 Dec 25 13:08:53 server amavis[12999]: Module BerkeleyDB 0.54 Dec 25 13:08:53 server amavis[12999]: Module Compress::Zlib 2.06 Dec 25 13:08:53 server amavis[12999]: Module Convert::TNEF 0.18 Dec 25 13:08:53 server amavis[12999]: Module Convert::UUlib 1.4 Dec 25 13:08:53 server amavis[12999]: Module Crypt::OpenSSL::RSA 0.28 Dec 25 13:08:53 server amavis[12999]: Module Digest::MD5 2.52 Dec 25 13:08:53 server amavis[12999]: Module Digest::SHA 5.84_01 Dec 25 13:08:53 server amavis[12999]: Module File::Temp 0.23 Dec 25 13:08:53 server amavis[12999]: Module IO::Socket::INET6 2.71 Dec 25 13:08:53 server amavis[12999]: Module MIME::Entity 5.505 Dec 25 13:08:53 server amavis[12999]: Module MIME::Parser 5.505 Dec 25 13:08:53 server amavis[12999]: Module MIME::Tools 5.505 Dec 25 13:08:53 server amavis[12999]: Module Mail::DKIM::Signer 0.4 Dec 25 13:08:53 server amavis[12999]: Module Mail::DKIM::Verifier 0.4 Dec 25 13:08:53 server amavis[12999]: Module Mail::Header 2.12 Dec 25 13:08:53 server amavis[12999]: Module Mail::Internet 2.12 Dec 25 13:08:53 server amavis[12999]: Module Net::DNS 0.68 Dec 25 13:08:53 server amavis[12999]: Module Net::Server 2.007 Dec 25 13:08:53 server amavis[12999]: Module Socket6 0.25 Dec 25 13:08:53 server amavis[12999]: Module Time::HiRes 1.9725 Dec 25 13:08:53 server amavis[12999]: Module Unix::Syslog 1.1 Dec 25 13:08:53 server amavis[12999]: Amavis::DB code loaded Dec 25 13:08:53 server amavis[12999]: SQL base code NOT loaded Dec 25 13:08:53 server amavis[12999]: SQL::Log code NOT loaded Dec 25 13:08:53 server amavis[12999]: SQL::Quarantine NOT loaded Dec 25 13:08:53 server amavis[12999]: Lookup::SQL code NOT loaded Dec 25 13:08:53 server amavis[12999]: Lookup::LDAP code NOT loaded Dec 25 13:08:53 server amavis[12999]: AM.PDP-in proto code loaded Dec 25 13:08:53 server amavis[12999]: SMTP-in proto code loaded Dec 25 13:08:53 server amavis[12999]: Courier proto code NOT loaded Dec 25 13:08:53 server amavis[12999]: SMTP-out proto code loaded Dec 25 13:08:53 server amavis[12999]: Pipe-out proto code NOT loaded Dec 25 13:08:53 server amavis[12999]: BSMTP-out proto code NOT loaded Dec 25 13:08:53 server amavis[12999]: Local-out proto code loaded Dec 25 13:08:53 server amavis[12999]: OS_Fingerprint code NOT loaded Dec 25 13:08:53 server amavis[12999]: ANTI-VIRUS code NOT loaded Dec 25 13:08:53 server amavis[12999]: ANTI-SPAM code NOT loaded Dec 25 13:08:53 server amavis[12999]: ANTI-SPAM-EXT code NOT loaded Dec 25 13:08:53 server amavis[12999]: ANTI-SPAM-C code NOT loaded Dec 25 13:08:53 server amavis[12999]: ANTI-SPAM-SA code NOT loaded Dec 25 13:08:53 server amavis[12999]: Unpackers code loaded Dec 25 13:08:53 server amavis[12999]: DKIM code loaded Dec 25 13:08:53 server amavis[12999]: Tools code NOT loaded Dec 25 13:08:53 server amavis[12999]: Found $file at /usr/bin/file Dec 25 13:08:53 server amavis[12999]: No $altermime, not using it