I have TLS / SASL working on my email server. My question is in my main.cf on Postfix, I have the following parameter for TLS:
smtpd_tls_security_level = may In my VIM editor, every parameter except the one listed above is in color. The above parameter is just in white. I assumed that this was because the parameter was not being properly recognized via Postfix. I removed it and broke Postfix so I then knew this parameter was significant and being utilized via my Postfix server: [r...@mail ~]# postconf | grep smtpd_tls_security_level smtpd_tls_security_level = may My question is why is it not in color like all the other Postfix parameters in VIM? And lastly, do I need this parameter in my main.cf: smtp_use_tls = yes or is the above the old parameter that is no longer used via Postfix 2.3+? I am thinking the later is a redundant entry for the first parameter I listed above. Below is my Postconf -n: [r...@mail ~]# postconf -n address_verify_sender = $double_bounce_sender alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases, hash:/etc/mailman/aliases broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix content_filter = amavisfeed:[127.0.0.1]:10024 daemon_directory = /usr/libexec/postfix home_mailbox = Maildir/ html_directory = no inet_interfaces = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man message_size_limit = 20480000 mydestination = $myhostname, $mydomain, mail.$mydomain mydomain = mydomain.tld myhostname = mail.mydomain.tld mynetworks = $config_directory/mynetworks myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES recipient_delimiter = + relay_domains = sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtp_use_tls = yes smtpd_banner = $myhostname ESMTP smtpd_delay_reject = yes smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, permit smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_pipelining, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, reject_unlisted_recipient, check_policy_service unix:postgrey/socket, check_sender_access hash:/etc/postfix/sender_access, reject_rbl_client zen.spamhaus.org, reject_rbl_client bl.spamcop.net, permit smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unknown_reverse_client_hostname, permit smtpd_tls_CAfile = /path/to/my/intermediate.crt smtpd_tls_auth_only = yes smtpd_tls_cert_file = /path/to/.crt smtpd_tls_key_file = /path/to/.key smtpd_tls_loglevel = 1 smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:/var/spool/postfix/smtpd_tls_cache smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom unknown_local_recipient_reject_code = 550
