Aug 24 01:26:47 donkeyserver postfix/error[8328]: 3BDC7C41D9D: to=<crongxiang7@gmail.com>, relay=none, delay=329184, delays=329184/0.29/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8275]: E7EDDC41F99: to=<crongxiang7@gmail.com>, relay=none, delay=151605, delays=151604/0.29/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8296]: E55B4C426E0: to=<crongxiang7@gmail.com>, relay=none, delay=134797, delays=134796/0.29/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8297]: E269EC41D4F: to=<crongxiang7@gmail.com>, relay=none, delay=114400, delays=114399/0.29/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8274]: EE71CC41D4B: to=<crongxiang7@gmail.com>, relay=none, delay=399991, delays=399991/0.29/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8285]: EE370C41D69: to=<crongxiang7@gmail.com>, relay=none, delay=386781, delays=386780/0.29/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8279]: CD7A1C41EFD: to=<crongxiang7@gmail.com>, relay=none, delay=43601, delays=43600/0.34/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8309]: C6A86C41E32: to=<crongxiang7@gmail.com>, relay=none, delay=407762, delays=407761/0.34/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8320]: E062FC41F89: to=<crongxiang7@gmail.com>, relay=none, delay=198404, delays=198403/0.34/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8311]: C7AA5C42669: to=<crongxiang7@gmail.com>, relay=none, delay=269204, delays=269203/0.34/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8292]: C835CC42029: to=<crongxiang7@gmail.com>, relay=none, delay=278192, delays=278191/0.34/0/0.11, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)
Aug 24 01:26:47 donkeyserver postfix/error[8290]: EAE95C41D99: to=<crongxiang7@gmail.com>, relay=none, delay=333392, delays=333391/0.34/0/0.12, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out)

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated
defer_unauth_destination
myhostname = donkeyserver.tk
alias_maps = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases
alias_database = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases
myorigin = /etc/mailname
mydestination = donkeyserver.tk, localhost, localhost.localdomain
relayhost =
mynetworks = 127.0.0.0/8 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
html_directory = /usr/share/doc/postfix/html
virtual_alias_domains =
virtual_alias_maps = hash:/var/lib/mailman/data/virtual-mailman,
proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf,
proxy:mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_mailbox_base = /var/vmail
virtual_uid_maps = mysql:/etc/postfix/mysql-virtual_uids.cf
virtual_gid_maps = mysql:/etc/postfix/mysql-virtual_gids.cf
sender_bcc_maps = proxy:mysql:/etc/postfix/mysql-virtual_outgoing_bcc.cf
smtpd_sasl_auth_enable = yes
broken_sasl_auth_clients = yes
smtpd_sasl_authenticated_header = yes
smtpd_restriction_classes = greylisting
greylisting = check_policy_service inet:127.0.0.1:10023
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated,
reject_unauth_destination, reject_rbl_client zen.spamhaus.org,
check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf,
check_recipient_access mysql:/etc/postfix/mysql-virtual_policy_greylist.cf
smtpd_tls_security_level = may
transport_maps = hash:/var/lib/mailman/data/transport-mailman,
proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
relay_domains = mysql:/etc/postfix/mysql-virtual_relaydomains.cf
relay_recipient_maps = mysql:/etc/postfix/mysql-virtual_relayrecipientmaps.cf
smtpd_sender_login_maps = proxy:mysql:/etc/postfix/mysql-virtual_sender_login_maps.cf
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps
$virtual_alias_domains $sender_bcc_maps $virtual_mailbox_maps
$virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:/etc/postfix/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, reject_invalid_helo_hostname, reject_unknown_helo_hostname, check_helo_access regexp:/etc/postfix/blacklist_helo
smtpd_sender_restrictions = check_sender_access regexp:/etc/postfix/tag_as_originating.re , permit_mynetworks, permit_sasl_authenticated, check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf, check_sender_access regexp:/etc/postfix/tag_as_foreign.re
smtpd_client_restrictions = check_client_access mysql:/etc/postfix/mysql-virtual_client.cf
smtpd_client_message_rate_limit = 100
maildrop_destination_concurrency_limit = 1
maildrop_destination_recipient_limit = 1
virtual_transport = dovecot
header_checks = regexp:/etc/postfix/header_checks
mime_header_checks = regexp:/etc/postfix/mime_header_checks
nested_header_checks = regexp:/etc/postfix/nested_header_checks
body_checks = regexp:/etc/postfix/body_checks
owner_request_special = no
smtp_tls_security_level = may
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
smtpd_tls_protocols = !SSLv2,!SSLv3
smtp_tls_protocols = !SSLv2,!SSLv3
smtpd_tls_exclude_ciphers = RC4, aNULL
smtp_tls_exclude_ciphers = RC4, aNULL
dovecot_destination_recipient_limit = 1
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
content_filter = amavis:[127.0.0.1]:10024
receive_override_options = no_address_mappings
message_size_limit = 0