Hi,This Thursday i had problems sending mails to outlook.com addresses. I found out that MS thought my mail-server was suspicious and had blocked me as sender. I could however mail to them and gotten my server allowed again.
But how can i ensure that i run a "professional" mail server that doesn't get blocked? I have attached my "postconf -n" output here so you can see if i miss something obvious!?
Thanks for you help Best regards Lars Nielsen ================= alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases allow_percent_hack = no append_dot_mydomain = no biff = no bounce_queue_lifetime = 3d config_directory = /etc/postfix default_destination_concurrency_limit = 3 delay_warning_time = 4h disable_vrfy_command = yes home_mailbox = Maildir/ inet_interfaces = all inet_protocols = all initial_destination_concurrency = 1 mailbox_command = mailbox_size_limit = 0 maximal_backoff_time = 8000s maximal_queue_lifetime = 5d minimal_backoff_time = 600s mydestination = myhostname = mail.lfw.dkmynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myhomeip/32 myserverip/32
mynetworks_style = host
myorigin = lfw.dk
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_helo_timeout = 60s
smtp_tls_cert_file = /etc/postfix/client.pem
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org,
reject_rbl_client blackholes.easynet.nl
smtpd_delay_reject = yes smtpd_error_sleep_time = 20 smtpd_hard_error_limit = 12 smtpd_helo_required = yessmtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, regexp:/etc/postfix/helo.regexp, permit
smtpd_junk_command_limit = 2 smtpd_recipient_limit = 16smtpd_recipient_restrictions = check_client_access hash:/etc/postfix/helo_client_exceptions check_sender_access hash:/etc/postfix/sender_checks, permit_sasl_authenticated, permit_mynetworks, reject_invalid_hostname, reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_destination, reject_unauth_pipelining, check_client_access hash:/etc/postfix/rbl_client_exceptions, reject_rbl_client cbl.abuseat.org, reject_rbl_client sbl-xbl.spamhaus.org, reject_rbl_client bl.spamcop.net, reject_rhsbl_sender dsn.rfc-ignorant.org, permit
smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $myhostname smtpd_sasl_security_options = noanonymoussmtpd_sender_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit
smtpd_soft_error_limit = 3
smtpd_tls_CAfile = /etc/ssl/intermediate.ca.pem
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/postfix/client.pem
smtpd_tls_key_file = /etc/ssl/mail.lfw.dk.pem
smtpd_tls_loglevel = 3
smtpd_tls_mandatory_protocols = !SSLv2
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
swap_bangpath = no
tls_random_source = /dev/urandom
unknown_address_reject_code = 554
unknown_client_reject_code = 554
unknown_hostname_reject_code = 554
unknown_local_recipient_reject_code = 450
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:5000
virtual_mailbox_base = /var/spool/mail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_limit = 51200000
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 5000
virtual_transport = virtual
virtual_uid_maps = static:5000
