I am configuring E-mail server in centos 6 by following http://www.howtoforge.com/virtual-u...er-mysql-and-squirrelmail-fedora-17-x86_64-p4. All things are working, but when i try to send mail it says the error: 1.mail for mail.example.com loops back to myself. #when i try to send mail from my centos6 2.when i try to acces mails via squirrelmail login page ,but when i login through [email protected] and password secret it says connection dropped by imap server The logs of the maillog file is given Code: Oct 30 20:24:34 localhost clamd[5285]: SelfCheck: Database status OK. Oct 30 20:27:46 localhost imapd: Connection, ip=[::ffff:192.168.137.130] Oct 30 20:27:46 localhost imapd: chdir example.com/sales/: No such file or directory Oct 30 20:27:46 localhost imapd: [email protected]: No such file or directory # when i tery to open [email protected] it says Connection dropped by imap server . MY main.cf is: Code: postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix content_filter = amavis:[127.0.0.1]:10024 daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 html_directory = no inet_interfaces = all inet_protocols = all mail_owner = postfix mail_spool_directory = /var/spool/mail mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = localhost, localhost.localdomain, server.example.com mydomain = example.com myhostname = server.example.com mynetworks = 127.0.0.0/8 myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES receive_override_options = no_address_mappings sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_tls_cert_file = /etc/postfix/smtpd.cert smtpd_tls_key_file = /etc/postfix/smtpd.key smtpd_use_tls = yes transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf unknown_local_recipient_reject_code = 550 virtual_alias_domains = virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf virtual_gid_maps = static:5000 virtual_mailbox_base = /home/vmail virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf virtual_uid_maps = static:5000 when i try from system #mailx [email protected] hiiii ctrlD nd check the logs it gives . (here [email protected] is a virtual user but even the same problem comes up with system users also) Code: tail /var/log/maillog Oct 30 20:04:45 localhost postfix/qmgr[9149]: D2B411A1347: from=<[email protected]>, size=863, nrcpt=1 (queue active) Oct 30 20:04:45 localhost postfix/smtpd[9174]: disconnect from unknown[127.0.0.1] Oct 30 20:04:45 localhost amavis[5323]: (05323-12) Passed CLEAN, <[email protected]> -> <[email protected]>, Message-ID: <[email protected]>, mail_id: wtEuHsHmOmVi, Hits: 0, size: 430, queued_as: D2B411A1347, 11797 ms Oct 30 20:04:45 localhost postfix/smtp[9168]: 198B01A1348: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=12, delays=0.22/0.01/0/12, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=05323-12, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as D2B411A1347) Oct 30 20:04:45 localhost postfix/qmgr[9149]: 198B01A1348: removed Oct 30 20:04:45 localhost postfix/smtp[9155]: D2B411A1347: to=<[email protected]>, relay=none, delay=0.07, delays=0.07/0/0/0, dsn=5.4.6, status=bounced ([B]mail for mail.example.com loops back to myself)[/B] Oct 30 20:04:45 localhost postfix/cleanup[9158]: F1FC41A1348: message-id=<[email protected]> please help !!