container/mailsrv/assets/postfix/policyd-spf.conf

#  Amount of debugging information logged.  0 logs no debugging messages
#  5 includes all debug messages.
debugLevel = 1 

#  If set to 0, no messages are rejected by SPF.  This allows you to see the 
#  potential impact of SPF checking in your mail logs without rejecting mail.
TestOnly = 1

#  Reject and deferred reason
#Reason_Message = Message {rejectdefer} due to: {spf}. Please see {url}

#  HELO check rejection policy. Options are:
#  HELO_reject = SPF_Not_Pass (default) - Reject if result not Pass/None/Tempfail.
#  HELO_reject = Softfail - Reject if result Softfail and Fail
#  HELO_reject = Fail - Reject on HELO Fail
#  HELO_reject = Null - Only reject HELO Fail for Null sender (SPF Classic)
#  HELO_reject = False - Never reject/defer on HELO, append header only. 
#  HELO_reject = No_Check - Never check HELO.
HELO_reject = Fail

#  HELO pass restriction policy.
#  HELO_pass_restriction = helo_passed_spf - Apply the given restriction when
#    the HELO checking result is Pass.  The given restriction must be an
#    action as defined for a Postfix SMTP server access table access(5).
#HELO_pass_restriction

#  Mail From rejection policy.  Options are:
#  Mail_From_reject = SPF_Not_Pass - Reject if result not Pass/None/Tempfail.
#  Mail_From_reject = Softfail - Reject if result Softfail and Fail
#  Mail_From_reject = Fail - Reject on Mail From Fail (default)
#  Mail_From_reject = False - Never reject/defer on Mail From, append header only
#  Mail_From_reject = No_Check - Never check Mail From/Return Path.
Mail_From_reject = Fail

#  Reject only from domains that send no mail. Options are:
#  No_Mail = False - Normal SPF record processing (default)
#  No_Mail = True - Only reject for "v=spf1 -all" records

#  Mail From pass restriction policy.
#  Mail_From_pass_restriction = mfrom_passed_spf - Apply the given
#    restriction when the Mail From checking result is Pass.  The given 
#    restriction must be an action as defined for a Postfix SMTP server
#    access table access(5).
#Mail_From_pass_restriction

#  Reject mail for Netural/Softfail results for these domains.
#  Recevier policy option to reject mail from certain domains when SPF is not
#  Pass/None even if their SPF record does not produce a Fail result.  This
#  Option does not change the effect of PermError_reject or TempError_Defer
#Reject_Not_Pass_Domains = aol.com,hotmail.com

#  Policy for rejecting due to SPF PermError.  Options are:
#  PermError_reject = True
#  PermError_reject = False
PermError_reject = False

#  Policy for deferring messages due to SPF TempError.  Options are:
#  TempError_Defer = True
#  TempError_Defer = False
TempError_Defer = False

#  Prospective SPF checking - Check to see if mail sent from the defined IP
#  address would pass.
#  Prospective = 192.168.0.4

#  Do not check SPF for localhost addresses - add to skip addresses to 
#  skip SPF for internal networks if desired. Defaults are standard IPv4 and
#  IPv6 localhost addresses.
skip_addresses = 127.0.0.0/8,::ffff:127.0.0.0/104,::1

#  Whitelist: CIDR Notation list of IP addresses not to check SPF for.
#  Example (default is no whitelist):
#  Whitelist = 192.168.0.0/31,192.168.1.12

# SPF HELO WHITELIST: HELO/EHLO host names to skip SPF checks for.
# Example (default is no HELO_Whitelist):
# HELO_Whitelist = relay.example.com,sender.example.org

#  Domain_Whitelist: List of domains whose sending IPs (defined by passing
#  their SPF check should be whitelisted from SPF.
#  Example (default is no domain whitelist):
#  Domain_Whitelist = pobox.com,trustedforwarder.org

# Domain_Whitelist_PTR: List of domains to whitelist against SPF checks base
# on PTR match.
# Example (default is no PTR whitelist)
# Domain_Whitelist_PTR = yahoo.com

# SPF ENHANCED STATUS CODES: Override Postfix enhanced status codes to use the
# RFC 7372 codes.  Disable by setting this option to "No".
# SPF_Enhanced_Status_Codes = No

# Type of header to insert to document SPF result. Can be Received-SPF (SPF)
# or Authentication Results (AR). It cannot be both.
# Examples: (default is Received-SPF):
# Header_Type = AR
# Header_Type = SPF

# In order to avoid disclosing BCC recipients in SPF header fields,
# Hide_Receiver is set to Yes by default in the interest of maximizing
# privacy.  This setting will replace the actual recipient with <UNKNOWN> both
# in header fields and SMTP responses.  The latter may make it more difficult
# for senders to troubleshoot issues with their SPF deployments.
#Hide_Receiver = No
Hide_Receiver = Yes

# Every Authentication-Results header field has an authentication identifier
# field ('Authserv_Id'). This is similar in syntax to a fully-qualified domain
# name. See policyd-spf.conf.5 and RFC 7001 paragraph 2.4 for details.
# Default is HOSTNAME (as provided by socket.gethostname).  Authserv-Id must
# be provided if Header_Type 'AR' is used.
# Authserv_Id = mx.example.com
Authserv_Id = HEADER

# RFC 7208 recommends an elapsed time limit for SPF checks of at least 20
# seconds.  Lookup_Time allows the maximum time (seconds) to be adjusted.  20
# seconds is the default.
# Lookup_Time = 20

# Some of the available whitelisting mechanisms, i.e. Domain_Whitelist, 
# Domain_Whitelist_PTR, and HELO_Whitelist, require specific non-SPF DNS
# lookups to determine if a connection should be white listed from SPF checks.
#  The maximum amount of time (in seconds) allocated for each of these checks,
# when used (none are enabled by default), is controlled by the
# Whitelist_Lookup_Time parameter.  It defaults to 10 seconds and is applied
# independently to each whitelisting method in use. 
# Whitelist_Lookup_Time = 10

# RFC 7208 adds a new processing limit called "void lookup limit" (See section
# 4.6.4).  Default is 2, but it can be adjusted.
# Void_Limit = 2

# In some versions of postfix, for bizarre Sendmail compatibility reasons, the
# first header field added by a policy server is not visible to milters.  To
# make this easy to work around, set the Mock value to true and a fixed header
# field will be inserted so the actual SPF check will be the second field and
# visible to milters such as DMARC milter.
# Mock = False