diff options
| author | Guilhem Moulin <guilhem@fripost.org> | 2017-05-15 23:31:13 +0200 |
|---|---|---|
| committer | Guilhem Moulin <guilhem@fripost.org> | 2017-05-16 01:29:28 +0200 |
| commit | 45743fcc30ad310da0ef306d6319face3604ac4d (patch) | |
| tree | 3df16d635b1f4e553fb31647e5cac80341c51b16 /roles | |
| parent | fcc12720a977c754b1e7ef79d67410b445caf065 (diff) | |
Use blackhole subdomain for sender addresses of verify probes.
These addresses need to be accepted on the MX:es, as recipients
sometimes phone back during the SMTP session to check whether the sender
exists.
Since a time-dependent suffix is added to the local part (cf.
http://www.postfix.org/postconf.5.html#address_verify_sender_ttl) it's
not enough to drop incoming mails to ‘double-bounce@fripost.org’, and
it's impractical to do the same for /^double-bounce.*@fripost\.org$/.
Diffstat (limited to 'roles')
| -rw-r--r-- | roles/MSA/templates/etc/postfix/main.cf.j2 | 2 | ||||
| -rw-r--r-- | roles/MX/files/etc/postfix/virtual/reserved_alias.pcre | 3 | ||||
| -rw-r--r-- | roles/out/templates/etc/postfix/main.cf.j2 | 2 |
3 files changed, 3 insertions, 4 deletions
diff --git a/roles/MSA/templates/etc/postfix/main.cf.j2 b/roles/MSA/templates/etc/postfix/main.cf.j2 index cbd5264..f5f0834 100644 --- a/roles/MSA/templates/etc/postfix/main.cf.j2 +++ b/roles/MSA/templates/etc/postfix/main.cf.j2 @@ -63,41 +63,41 @@ smtpd_tls_key_file = $config_directory/ssl/smtp.fripost.org.key smtpd_tls_dh1024_param_file = /etc/ssl/dhparams.pem smtpd_tls_session_cache_database= smtpd_tls_received_header = yes # SASL smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = no smtpd_sasl_local_domain = smtpd_sasl_exceptions_networks = $mynetworks smtpd_sasl_security_options = noanonymous, noplaintext smtpd_sasl_tls_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_sasl_type = dovecot smtpd_sasl_path = unix:private/dovecot-auth strict_rfc821_envelopes = yes smtpd_delay_reject = yes disable_vrfy_command = yes -address_verify_sender = $double_bounce_sender@$mydomain +address_verify_sender = $double_bounce_sender@noreply.$mydomain address_verify_sender_ttl = 24h unverified_recipient_defer_code = 250 unverified_recipient_reject_code = 550 smtpd_client_restrictions = permit_sasl_authenticated reject smtpd_helo_required = yes smtpd_helo_restrictions = reject_invalid_helo_hostname smtpd_sender_restrictions = reject_non_fqdn_sender reject_unknown_sender_domain check_sender_access cdb:$config_directory/check_sender_access smtpd_relay_restrictions = reject_non_fqdn_recipient reject_unknown_recipient_domain diff --git a/roles/MX/files/etc/postfix/virtual/reserved_alias.pcre b/roles/MX/files/etc/postfix/virtual/reserved_alias.pcre index 9fe60c8..eb17d65 100644 --- a/roles/MX/files/etc/postfix/virtual/reserved_alias.pcre +++ b/roles/MX/files/etc/postfix/virtual/reserved_alias.pcre @@ -1,6 +1,5 @@ /^(?:postmaster|abuse)(?:\+.*)?@fripost\.org$/ admin@fripost.org # For other domains, RFC 822 section 6.3 and RFC 2142 section 4 # mandatory aliases are forwarded to OUR admin team and to the domain # owner or postmaster, if there are any. -/^(postmaster|abuse)(?:\+.*)?@(.*)/ $2/$1@reserved.fripost.org -/^(double-bounce)(?:\+.*)?@(.*)/ $2/$1@discard.fripost.org +/^(postmaster|abuse)(?:\+.*)?@(.*)/ $2/$1@reserved.fripost.org diff --git a/roles/out/templates/etc/postfix/main.cf.j2 b/roles/out/templates/etc/postfix/main.cf.j2 index 235b866..2ba0a34 100644 --- a/roles/out/templates/etc/postfix/main.cf.j2 +++ b/roles/out/templates/etc/postfix/main.cf.j2 @@ -40,41 +40,41 @@ recipient_delimiter = + relay_domains = relay_transport = error:5.3.2 Relay Transport unavailable # All header rewriting happens upstream local_header_rewrite_clients = smtp_tls_security_level = may smtp_tls_ciphers = medium smtp_tls_protocols = !SSLv2, !SSLv3 smtp_tls_note_starttls_offer = yes smtp_tls_session_cache_database = btree:$data_directory/smtp_tls_session_cache smtpd_tls_security_level = none strict_rfc821_envelopes = yes smtpd_delay_reject = yes disable_vrfy_command = yes -address_verify_sender = $double_bounce_sender@$mydomain +address_verify_sender = $double_bounce_sender@noreply.$mydomain address_verify_sender_ttl = 24h unverified_recipient_defer_code = 250 unverified_recipient_reject_code = 550 smtpd_client_restrictions = permit_mynetworks # We are the only ones using this proxy, but if things go wrong we # want to know why defer smtpd_helo_required = yes smtpd_helo_restrictions = reject_invalid_helo_hostname smtpd_sender_restrictions = reject_non_fqdn_sender smtpd_relay_restrictions = reject_non_fqdn_recipient reject_unknown_recipient_domain |