Hi ,
I have installed postfix,dovecot and squirrelmail in centos 6.5
I configured postfix , dovecot and squirrelmail.
Iam able to login with username everything is fine. but mails that i send to another user not able to recieve.
Mails are showing in my sent box. But other person not recieving my mails.
as iam newbie to linux and squirrelmail i have lesser knowledge in linux.
please help !!!

thank you

Could you please post the output of postfix when you send an email message?

Don't use email servers on your PC unless you _require_ them for work (ie, its' your job to act as a mail hub for an ISP).

Why is because:

* mail is hard to configure and you don't require it usually (usually, /var/log "syslog" suffices)

* they are often pre-configured to allow remote hackers to ROOT YOUR SYSTEM by sending your computer carefully crafted mails. you have to know the mail program inside and out to insure the configuration doesn't allow that

* they are ripe to be trojan horses for mass mail spammers (if your not perfect, they will use your machine to relay spam)

* you can get from your ISP or from google, send mail using anything (ie, mozilla thunderbird mail)

thank you bro for quick response,

may i know the command to get output of postfix and dovecot.
as iam newbie to linux iam not aware of all commands.
iam learning now.

however, iam posting my maillog here, it may help to solve the issue.

/var/log/maillog

May 27 03:14:44 server postfix/qmgr[1489]: E30767A80: from=<kate@topen.com>, size=707, nrcpt=1 (queue active)
May 27 03:15:05 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4710, secured
May 27 03:15:05 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:17:09 server postfix/smtp[4703]: E30767A80: to=<ramu@adnts.com>, relay=mail.adnts.com[74.124.208.184]:25, delay=34528, delays=34383/0.55/144/0, dsn=4.4.2, status=deferred (lost connection with mail.adnts.com[74.124.208.184] while receiving the initial server greeting)
May 27 03:18:55 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4719, secured
May 27 03:18:55 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:19:44 server postfix/qmgr[1489]: 6D57F7A6A: from=<kate@localhost.topen.com>, size=739, nrcpt=2 (queue active)
May 27 03:19:44 server postfix/qmgr[1489]: A601D7A66: from=<ramu@localhost.topen.com>, size=726, nrcpt=1 (queue active)
May 27 03:19:44 server postfix/qmgr[1489]: D1E162473: from=<senthil@topen.com>, size=737, nrcpt=3 (queue active)
May 27 03:19:44 server postfix/qmgr[1489]: 1D91F7A7F: from=<ramu@localhost.topen.com>, size=740, nrcpt=2 (queue active)
May 27 03:19:44 server postfix/qmgr[1489]: 2C3BB58F6: from=<kate@topen.com>, size=714, nrcpt=1 (queue active)
May 27 03:19:44 server postfix/qmgr[1489]: B58DB7A6D: from=<ramu@localhost.topen.com>, size=727, nrcpt=1 (queue active)
May 27 03:19:44 server postfix/qmgr[1489]: F0EE37A6C: from=<kate@localhost.topen.com>, size=728, nrcpt=1 (queue active)
May 27 03:20:05 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4738, secured
May 27 03:20:05 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:22:01 server postfix/smtp[4723]: D1E162473: to=<kate@localhost.com>, relay=localhost.com[74.125.224.72]:25, delay=23440, delays=23304/0.04/136/0, dsn=4.4.2, status=deferred (lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/smtp[4724]: 1D91F7A7F: to=<senthil@localhost.com>, relay=localhost.com[74.125.224.72]:25, delay=272397, delays=272261/0.05/136/0, dsn=4.4.2, status=deferred (lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/smtp[4721]: 6D57F7A6A: to=<ramu@localhost.com>, relay=localhost.com[74.125.224.72]:25, delay=110641, delays=110505/0.03/136/0, dsn=4.4.2, status=deferred (lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/smtp[4722]: A601D7A66: to=<kate@localhost.com>, relay=localhost.com[74.125.224.72]:25, delay=272454, delays=272317/0.03/136/0, dsn=4.4.2, status=deferred (lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/smtp[4721]: 6D57F7A6A: to=<senthil@localhost.com>, relay=localhost.com[74.125.224.72]:25, delay=110641, delays=110505/0.03/136/0, dsn=4.4.2, status=deferred (lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/smtp[4725]: 2C3BB58F6: to=<ramu@localhost.com>, relay=localhost.com[74.125.224.72]:25, delay=23404, delays=23268/0.05/136/0, dsn=4.4.2, status=deferred (lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/error[4741]: B58DB7A6D: to=<kate@localhost.com>, relay=none, delay=272436, delays=272300/136/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:22:01 server postfix/error[4741]: F0EE37A6C: to=<ramu@localhost.com>, relay=none, delay=272321, delays=272185/136/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with localhost.com[74.125.224.72] while receiving the initial server greeting)
May 27 03:23:56 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4751, secured
May 27 03:23:56 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:25:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4758, secured
May 27 03:25:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:28:56 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4766, secured
May 27 03:28:56 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:30:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4778, secured
May 27 03:30:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:33:56 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4788, secured
May 27 03:33:56 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:35:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4793, secured
May 27 03:35:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:38:56 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4802, secured
May 27 03:38:56 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:40:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4814, secured
May 27 03:40:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:43:57 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4822, secured
May 27 03:43:57 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:44:44 server postfix/qmgr[1489]: 9E7EA4C12: from=<kate@topen.com>, size=701, nrcpt=1 (queue active)
May 27 03:45:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4831, secured
May 27 03:45:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:47:04 server postfix/smtp[4824]: 9E7EA4C12: to=<ramu@adnts.com>, relay=mail.adnts.com[74.124.208.184]:25, delay=36331, delays=36191/0.03/140/0, dsn=4.4.2, status=deferred (lost connection with mail.adnts.com[74.124.208.184] while receiving the initial server greeting)
May 27 03:48:57 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4843, secured
May 27 03:48:57 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:50:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4856, secured
May 27 03:50:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:53:57 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4867, secured
May 27 03:53:57 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 03:55:06 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4876, secured
May 27 03:55:06 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 03:58:57 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4885, secured
May 27 03:58:57 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 04:00:07 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4897, secured
May 27 04:00:07 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 04:03:57 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4919, secured
May 27 04:03:57 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 04:05:07 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4924, secured
May 27 04:05:07 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 04:08:58 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4934, secured
May 27 04:08:58 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 04:09:44 server postfix/qmgr[1489]: B33784D8D: from=<kate@topen.com>, size=728, nrcpt=1 (queue active)
May 27 04:09:44 server postfix/qmgr[1489]: 49B4F5447: from=<kate@topen.com>, size=713, nrcpt=1 (queue active)
May 27 04:10:07 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4949, secured
May 27 04:10:07 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 04:12:00 server postfix/smtp[4936]: B33784D8D: to=<ramu@adadasjda.topen.com>, orig_to=<ramu@adadasjda>, relay=adadasjda.topen.com[69.172.201.153]:25, delay=31787, delays=31650/0.03/136/0, dsn=4.4.2, status=deferred (lost connection with adadasjda.topen.com[69.172.201.153] while receiving the initial server greeting)
May 27 04:12:00 server postfix/smtp[4937]: 49B4F5447: to=<ram@123dmdksd.topen.com>, orig_to=<ram@123dmdksd>, relay=123dmdksd.topen.com[69.172.201.153]:25, delay=31825, delays=31688/0.03/137/0, dsn=4.4.2, status=deferred (lost connection with 123dmdksd.topen.com[69.172.201.153] while receiving the initial server greeting)
May 27 04:13:58 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4959, secured
May 27 04:13:58 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681
May 27 04:15:07 server dovecot: imap-login: Login: user=<kate>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4966, secured
May 27 04:15:07 server dovecot: imap(kate): Disconnected: Logged out bytes=84/681
May 27 04:18:59 server dovecot: imap-login: Login: user=<user1>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=4976, secured
May 27 04:18:59 server dovecot: imap(user1): Disconnected: Logged out bytes=84/681

Hi Brother,

FYI, I installed squirrelmail on Virtual machine and it is my project.

when i entered the cmd >> postconf -d

i got the following output, please look into it.

ipc_timeout = 3600s
ipc_ttl = 1000s
line_length_limit = 2048
lmtp_assume_final = no
lmtp_bind_address =
lmtp_bind_address6 =
lmtp_body_checks =
lmtp_cname_overrides_servername = no
lmtp_connect_timeout = 0s
lmtp_connection_cache_destinations =
lmtp_connection_cache_on_demand = yes
lmtp_connection_cache_time_limit = 2s
lmtp_connection_reuse_time_limit = 300s
lmtp_data_done_timeout = 600s
lmtp_data_init_timeout = 120s
lmtp_data_xfer_timeout = 180s
lmtp_defer_if_no_mx_address_found = no
lmtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
lmtp_destination_concurrency_limit = $default_destination_concurrency_limit
lmtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
lmtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
lmtp_destination_rate_delay = $default_destination_rate_delay
lmtp_destination_recipient_limit = $default_destination_recipient_limit
lmtp_discard_lhlo_keyword_address_maps =
lmtp_discard_lhlo_keywords =
lmtp_enforce_tls = no
lmtp_generic_maps =
lmtp_header_checks =
lmtp_host_lookup = dns
lmtp_initial_destination_concurrency = $initial_destination_concurrency
lmtp_lhlo_name = $myhostname
lmtp_lhlo_timeout = 300s
lmtp_line_length_limit = 990
lmtp_mail_timeout = 300s
lmtp_mime_header_checks =
lmtp_mx_address_limit = 5
lmtp_mx_session_limit = 2
lmtp_nested_header_checks =
lmtp_pix_workaround_delay_time = 10s
lmtp_pix_workaround_maps =
lmtp_pix_workaround_threshold_time = 500s
lmtp_pix_workarounds = disable_esmtp,delay_dotcrlf
lmtp_quit_timeout = 300s
lmtp_quote_rfc821_envelope = yes
lmtp_randomize_addresses = yes
lmtp_rcpt_timeout = 300s
lmtp_rset_timeout = 20s
lmtp_sasl_auth_cache_name =
lmtp_sasl_auth_cache_time = 90d
lmtp_sasl_auth_enable = no
lmtp_sasl_auth_soft_bounce = yes
lmtp_sasl_mechanism_filter =
lmtp_sasl_password_maps =
lmtp_sasl_path =
lmtp_sasl_security_options = noplaintext, noanonymous
lmtp_sasl_tls_security_options = $lmtp_sasl_security_options
lmtp_sasl_tls_verified_security_options = $lmtp_sasl_tls_security_options
lmtp_sasl_type = cyrus
lmtp_send_xforward_command = no
lmtp_sender_dependent_authentication = no
lmtp_skip_5xx_greeting = yes
lmtp_skip_quit_response = no
lmtp_starttls_timeout = 300s
lmtp_tcp_port = 24
lmtp_tls_CAfile =
lmtp_tls_CApath =
lmtp_tls_cert_file =
lmtp_tls_ciphers = export
lmtp_tls_dcert_file =
lmtp_tls_dkey_file = $lmtp_tls_dcert_file
lmtp_tls_eccert_file =
lmtp_tls_eckey_file = $lmtp_tls_eccert_file
lmtp_tls_enforce_peername = yes
lmtp_tls_exclude_ciphers =
lmtp_tls_fingerprint_cert_match =
lmtp_tls_fingerprint_digest = md5
lmtp_tls_key_file = $lmtp_tls_cert_file
lmtp_tls_loglevel = 0
lmtp_tls_mandatory_ciphers = medium
lmtp_tls_mandatory_exclude_ciphers =
lmtp_tls_mandatory_protocols = SSLv3, TLSv1
lmtp_tls_note_starttls_offer = no
lmtp_tls_per_site =
lmtp_tls_policy_maps =
lmtp_tls_protocols = !SSLv2
lmtp_tls_scert_verifydepth = 9
lmtp_tls_secure_cert_match = nexthop
lmtp_tls_security_level =
lmtp_tls_session_cache_database =
lmtp_tls_session_cache_timeout = 3600s
lmtp_tls_verify_cert_match = hostname
lmtp_use_tls = no
lmtp_xforward_timeout = 300s
local_command_shell =
local_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
local_destination_concurrency_limit = 2
local_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
local_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
local_destination_rate_delay = $default_destination_rate_delay
local_destination_recipient_limit = 1
local_header_rewrite_clients = permit_inet_interfaces
local_initial_destination_concurrency = $initial_destination_concurrency
local_recipient_maps = proxy:unixasswd.byname $alias_maps
local_transport = local:$myhostname
luser_relay =
mail_name = Postfix
mail_owner = postfix
mail_release_date = 20100319
mail_spool_directory = /var/mail
mail_version = 2.6.6
mailbox_command =
mailbox_command_maps =
mailbox_delivery_lock = fcntl, dotlock
mailbox_size_limit = 51200000
mailbox_transport =
mailbox_transport_maps =
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
maps_rbl_domains =
maps_rbl_reject_code = 554
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains =
masquerade_exceptions =
master_service_disable =
max_idle = 100s
max_use = 100
maximal_backoff_time = 4000s
maximal_queue_lifetime = 5d
message_reject_characters =
message_size_limit = 10240000
message_strip_characters =
milter_command_timeout = 30s
milter_connect_macros = j {daemon_name} v
milter_connect_timeout = 30s
milter_content_timeout = 300s
milter_data_macros = i
milter_default_action = tempfail
milter_end_of_data_macros = i
milter_end_of_header_macros = i
milter_helo_macros = {tls_version} {cipher} {cipher_bits} {cert_subject} {cert_issuer}
milter_macro_daemon_name = $myhostname
milter_macro_v = $mail_name $mail_version
milter_mail_macros = i {auth_type} {auth_authen} {auth_author} {mail_addr} {mail_host} {mail_mailer}
milter_protocol = 6
milter_rcpt_macros = i {rcpt_addr} {rcpt_host} {rcpt_mailer}
milter_unknown_command_macros =
mime_boundary_length_limit = 2048
mime_header_checks = $header_checks
mime_nesting_limit = 100
minimal_backoff_time = 300s
multi_instance_directories =
multi_instance_enable = no
multi_instance_group =
multi_instance_name =
multi_instance_wrapper =
multi_recipient_bounce_reject_code = 550
mydestination = $myhostname, localhost.$mydomain, localhost
mydomain = topen.com
myhostname = server.topen.com
mynetworks = 127.0.0.0/8 192.168.217.0/24
mynetworks_style = subnet
myorigin = $myhostname
nested_header_checks = $header_checks
newaliases_path = /usr/bin/newaliases
non_fqdn_reject_code = 504
non_smtpd_milters =
notify_classes = resource, software
owner_request_special = yes
parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,rel ay_domains,smtpd_access_maps
permit_mx_backup_networks =
pickup_service_name = pickup
plaintext_reject_code = 450
postmulti_control_commands = reload flush
postmulti_start_commands = start
postmulti_stop_commands = stop abort drain quick-stop
prepend_delivered_header = command, file, forward
process_id_directory = pid
propagate_unmatched_extensions = canonical, virtual
proxy_interfaces =
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 $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps
proxy_write_maps = $smtp_sasl_auth_cache_name $lmtp_sasl_auth_cache_name
proxymap_service_name = proxymap
proxywrite_service_name = proxywrite
qmgr_clog_warn_time = 300s
qmgr_fudge_factor = 100
qmgr_message_active_limit = 20000
qmgr_message_recipient_limit = 20000
qmgr_message_recipient_minimum = 10
qmqpd_authorized_clients =
qmqpd_client_port_logging = no
qmqpd_error_delay = 1s
qmqpd_timeout = 300s
queue_directory = /var/spool/postfix
queue_file_attribute_count_limit = 100
queue_minfree = 0
queue_run_delay = 300s
queue_service_name = qmgr
rbl_reply_maps =
readme_directory = no
receive_override_options =
recipient_bcc_maps =
recipient_canonical_classes = envelope_recipient, header_recipient
recipient_canonical_maps =
recipient_delimiter =
reject_code = 554
reject_tempfail_action = defer_if_permit
relay_clientcerts =
relay_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
relay_destination_concurrency_limit = $default_destination_concurrency_limit
relay_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
relay_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
relay_destination_rate_delay = $default_destination_rate_delay
relay_destination_recipient_limit = $default_destination_recipient_limit
relay_domains = $mydestination
relay_domains_reject_code = 554
relay_initial_destination_concurrency = $initial_destination_concurrency
relay_recipient_maps =
relay_transport = relay
relayhost =
relocated_maps =
remote_header_rewrite_domain =
require_home_directory = no
resolve_dequoted_address = yes
resolve_null_domain = no
resolve_numeric_domain = no
rewrite_service_name = rewrite
sample_directory = /etc/postfix
send_cyrus_sasl_authzid = no
sender_bcc_maps =
sender_canonical_classes = envelope_sender, header_sender
sender_canonical_maps =
sender_dependent_relayhost_maps =
sendmail_path = /usr/sbin/sendmail
service_throttle_time = 60s
setgid_group = postdrop
show_user_unknown_table_name = yes
showq_service_name = showq
smtp_always_send_ehlo = yes
smtp_bind_address =
smtp_bind_address6 =
smtp_body_checks =
smtp_cname_overrides_servername = no
smtp_connect_timeout = 30s
smtp_connection_cache_destinations =
smtp_connection_cache_on_demand = yes
smtp_connection_cache_time_limit = 2s
smtp_connection_reuse_time_limit = 300s
smtp_data_done_timeout = 600s
smtp_data_init_timeout = 120s
smtp_data_xfer_timeout = 180s
smtp_defer_if_no_mx_address_found = no
smtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
smtp_destination_concurrency_limit = $default_destination_concurrency_limit
smtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
smtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
smtp_destination_rate_delay = $default_destination_rate_delay
smtp_destination_recipient_limit = $default_destination_recipient_limit
smtp_discard_ehlo_keyword_address_maps =
smtp_discard_ehlo_keywords =
smtp_enforce_tls = no
smtp_fallback_relay = $fallback_relay
smtp_generic_maps =
smtp_header_checks =
smtp_helo_name = $myhostname
smtp_helo_timeout = 300s
smtp_host_lookup = dns
smtp_initial_destination_concurrency = $initial_destination_concurrency
smtp_line_length_limit = 990
smtp_mail_timeout = 300s
smtp_mime_header_checks =
smtp_mx_address_limit = 5
smtp_mx_session_limit = 2
smtp_nested_header_checks =
smtp_never_send_ehlo = no
smtp_pix_workaround_delay_time = 10s
smtp_pix_workaround_maps =
smtp_pix_workaround_threshold_time = 500s
smtp_pix_workarounds = disable_esmtp,delay_dotcrlf
smtp_quit_timeout = 300s
smtp_quote_rfc821_envelope = yes
smtp_randomize_addresses = yes
smtp_rcpt_timeout = 300s
smtp_rset_timeout = 20s
smtp_sasl_auth_cache_name =
smtp_sasl_auth_cache_time = 90d
smtp_sasl_auth_enable = no
smtp_sasl_auth_soft_bounce = yes
smtp_sasl_mechanism_filter =
smtp_sasl_password_maps =
smtp_sasl_path =
smtp_sasl_security_options = noplaintext, noanonymous
smtp_sasl_tls_security_options = $smtp_sasl_security_options
smtp_sasl_tls_verified_security_options = $smtp_sasl_tls_security_options
smtp_sasl_type = cyrus
smtp_send_xforward_command = no
smtp_sender_dependent_authentication = no
smtp_skip_5xx_greeting = yes
smtp_skip_quit_response = yes
smtp_starttls_timeout = 300s
smtp_tls_CAfile =
smtp_tls_CApath =
smtp_tls_cert_file =
smtp_tls_ciphers = export
smtp_tls_dcert_file =
smtp_tls_dkey_file = $smtp_tls_dcert_file
smtp_tls_eccert_file =
smtp_tls_eckey_file = $smtp_tls_eccert_file
smtp_tls_enforce_peername = yes
smtp_tls_exclude_ciphers =
smtp_tls_fingerprint_cert_match =
smtp_tls_fingerprint_digest = md5
smtp_tls_key_file = $smtp_tls_cert_file
smtp_tls_loglevel = 0
smtp_tls_mandatory_ciphers = medium
smtp_tls_mandatory_exclude_ciphers =
smtp_tls_mandatory_protocols = SSLv3, TLSv1
smtp_tls_note_starttls_offer = no
smtp_tls_per_site =
smtp_tls_policy_maps =
smtp_tls_protocols = !SSLv2
smtp_tls_scert_verifydepth = 9
smtp_tls_secure_cert_match = nexthop, dot-nexthop
smtp_tls_security_level =
smtp_tls_session_cache_database =
smtp_tls_session_cache_timeout = 3600s
smtp_tls_verify_cert_match = hostname
smtp_use_tls = no
smtp_xforward_timeout = 300s
smtpd_authorized_verp_clients = $authorized_verp_clients
smtpd_authorized_xclient_hosts =
smtpd_authorized_xforward_hosts =
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_client_connection_count_limit = 50
smtpd_client_connection_rate_limit = 0
smtpd_client_event_limit_exceptions = ${smtpd_client_connection_limit_exceptions:$mynetworks}
smtpd_client_message_rate_limit = 0
smtpd_client_new_tls_session_rate_limit = 0
smtpd_client_port_logging = no
smtpd_client_recipient_rate_limit = 0
smtpd_client_restrictions =
smtpd_data_restrictions =
smtpd_delay_open_until_valid_rcpt = yes
smtpd_delay_reject = yes
smtpd_discard_ehlo_keyword_address_maps =
smtpd_discard_ehlo_keywords =
smtpd_end_of_data_restrictions =
smtpd_enforce_tls = no
smtpd_error_sleep_time = 1s
smtpd_etrn_restrictions =
smtpd_expansion_filter = \t\40!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~
smtpd_forbidden_commands = CONNECT GET POST
smtpd_hard_error_limit = ${stress?1}${stress:20}
smtpd_helo_required = no
smtpd_helo_restrictions =
smtpd_history_flush_threshold = 100
smtpd_junk_command_limit = ${stress?1}${stress:100}
smtpd_milters =
smtpd_noop_commands =
smtpd_null_access_lookup_key = <>
smtpd_peername_lookup = yes
smtpd_policy_service_max_idle = 300s
smtpd_policy_service_max_ttl = 1000s
smtpd_policy_service_timeout = 100s
smtpd_proxy_ehlo = $myhostname
smtpd_proxy_filter =
smtpd_proxy_timeout = 100s
smtpd_recipient_limit = 1000
smtpd_recipient_overshoot_limit = 1000
smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = no
smtpd_restriction_classes =
smtpd_sasl_auth_enable = no
smtpd_sasl_authenticated_header = no
smtpd_sasl_exceptions_networks =
smtpd_sasl_local_domain =
smtpd_sasl_path = smtpd
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
smtpd_sasl_type = cyrus
smtpd_sender_login_maps =
smtpd_sender_restrictions =
smtpd_soft_error_limit = 10
smtpd_starttls_timeout = 300s
smtpd_timeout = ${stress?10}${stress:300}s
smtpd_tls_CAfile =
smtpd_tls_CApath =
smtpd_tls_always_issue_session_ids = yes
smtpd_tls_ask_ccert = no
smtpd_tls_auth_only = no
smtpd_tls_ccert_verifydepth = 9
smtpd_tls_cert_file =
smtpd_tls_ciphers = export
smtpd_tls_dcert_file =
smtpd_tls_dh1024_param_file =
smtpd_tls_dh512_param_file =
smtpd_tls_dkey_file = $smtpd_tls_dcert_file
smtpd_tls_eccert_file =
smtpd_tls_eckey_file = $smtpd_tls_eccert_file
smtpd_tls_eecdh_grade = none
smtpd_tls_exclude_ciphers =
smtpd_tls_fingerprint_digest = md5
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_loglevel = 0
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_mandatory_exclude_ciphers =
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_protocols =
smtpd_tls_received_header = no
smtpd_tls_req_ccert = no
smtpd_tls_security_level =
smtpd_tls_session_cache_database =
smtpd_tls_session_cache_timeout = 3600s
smtpd_tls_wrappermode = no
smtpd_use_tls = no
soft_bounce = no
stale_lock_time = 500s
stress =
strict_7bit_headers = no
strict_8bitmime = no
strict_8bitmime_body = no
strict_mailbox_ownership = yes
strict_mime_encoding_domain = no
strict_rfc821_envelopes = no
sun_mailtool_compatibility = no
swap_bangpath = yes
syslog_facility = mail
syslog_name = ${multi_instance_nameostfix}${multi_instance_name?$multi_instance_name}
tcp_windowsize = 0
tls_daemon_random_bytes = 32
tls_eecdh_strong_curve = prime256v1
tls_eecdh_ultra_curve = secp384r1
tls_export_cipherlist = ALL:+RC4:@STRENGTH
tls_high_cipherlist = ALL:!EXPORT:!LOW:!MEDIUM:+RC4:@STRENGTH
tls_low_cipherlist = ALL:!EXPORT:+RC4:@STRENGTH
tls_medium_cipherlist = ALL:!EXPORT:!LOW:+RC4:@STRENGTH
tls_null_cipherlist = eNULL:!aNULL
tls_random_bytes = 32
tls_random_exchange_name = ${data_directory}/prng_exch
tls_random_prng_update_period = 3600s
tls_random_reseed_period = 3600s
tls_random_source = dev:/dev/urandom
trace_service_name = trace
transport_maps =
transport_retry_time = 60s
trigger_timeout = 10s
undisclosed_recipients_header = To: undisclosed-recipients:;
unknown_address_reject_code = 450
unknown_address_tempfail_action = $reject_tempfail_action
unknown_client_reject_code = 450
unknown_helo_hostname_tempfail_action = $reject_tempfail_action
unknown_hostname_reject_code = 450
unknown_local_recipient_reject_code = 550
unknown_relay_recipient_reject_code = 550
unknown_virtual_alias_reject_code = 550
unknown_virtual_mailbox_reject_code = 550
unverified_recipient_defer_code = 450
unverified_recipient_reject_code = 450
unverified_recipient_reject_reason =
unverified_recipient_tempfail_action = $reject_tempfail_action
unverified_sender_defer_code = 450
unverified_sender_reject_code = 450
unverified_sender_reject_reason =
unverified_sender_tempfail_action = $reject_tempfail_action
verp_delimiter_filter = -=+
virtual_alias_domains = $virtual_alias_maps
virtual_alias_expansion_limit = 1000
virtual_alias_maps = $virtual_maps
virtual_alias_recursion_limit = 1000
virtual_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
virtual_destination_concurrency_limit = $default_destination_concurrency_limit
virtual_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
virtual_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
virtual_destination_rate_delay = $default_destination_rate_delay
virtual_destination_recipient_limit = $default_destination_recipient_limit
virtual_gid_maps =
virtual_initial_destination_concurrency = $initial_destination_concurrency
virtual_mailbox_base =
virtual_mailbox_domains = $virtual_mailbox_maps
virtual_mailbox_limit = 51200000
virtual_mailbox_lock = fcntl, dotlock
virtual_mailbox_maps =
virtual_minimum_uid = 100
virtual_transport = virtual
virtual_uid_maps =

here is the output of #postconf -n
hope this helps you,

[root@server ~]# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mydomain = topen.com
myhostname = server.topen.com
mynetworks = 192.168.217.0/24 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination smtp_tls_security_level = may smtpd_tls_security_level = may smtp_tls_note_starttls_offer = yes smtpd_tls_loglevel = 1 smtpd_tls_key_file = /etc/postfix/ssl/server.key smtpd_tls_cert_file = /etc/postfix/ssl/server.crt smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom
unknown_local_recipient_reject_code = 550

you said "it's your project". however in usa it's practically illegal to run a mail server: it requires authenticating with microsoft who authenticates only with google and a few others.

in the past 'mail' was used for system messages so there was some sense that it "be working". that's no longer true.

(in the past 'mail' was used for legitimate purposes, abusers could be found and arrested - their pc's seize, so there was no spam, 0 spam. that was during "the real internet". with Bill Clinton internet: with fake IP's and ipv6 only authorities can track down spammers and authorities refuse to do their work, and no one else is allowed to run servers). i ran a mail server and continually got attemps for spam relay and also virus attempts from (purportedly china)

i wouldn't help you if i knew how. i continually get spam mail from foreign servers.

Hi Bro,
Im running it on My PC that too VMware as for my educational purpose.
iam not using it for any business purpose.
And after completion of project i will crash everything . i wont use it anymore.

anyways thanks for the Advice.

What nonsense is this? Post your source where it states that "its practically illegal to run a mail server".

You may want to consider another program: https://blog.cpanel.com/the-death-of-squirrelmail/

Hi Guys ,
finally i fixed this issue.
problem is : there is different mail path in dovecot.conf File.

we need to add few lines at the end of the configuration file
##

protocol imap {
mail_location = /home/%u/Maildir
}

this fixed my issue. thank you All