#### Anti-spam ruleset

#### General rules for all incoming stanzas ####

::deliver

# Pass stanzas that a user sends to their own account

TO SELF?

PASS.

# Pass stanzas that are addressed to a valid full JID

TO FULL JID?

PASS.

# Pass stanzas from contacts

SUBSCRIBED?

PASS.

# Run extra rules that apply to messages only

KIND: message

JUMP_CHAIN=user/check_spam_message

# Run extra rules that apply to presence stanzas only

KIND: presence

JUMP CHAIN=user/check_spam_presence

#### Rules for messages ####

::user/check_spam_message

# Non-chat message types often generate pop-ups in clients,

# so we won't accept them from strangers

NOT TYPE: chat

JUMP CHAIN=user/reject_spam

# This chain can be used by other scripts

# and modules that analyze message content

JUMP CHAIN=user/check_spam_message_content

#### Rules for presence stanzas ####

::user/check_spam_presence

# We don't want to receive presence from random strangers,

# but still allow subscription requests

NOT TYPE: subscribe

DROP.

# This chain can be used by other scripts

# and modules to filter subscription requests

JUMP CHAIN=user/check_subscription_request

#### Stanzas reaching this chain will be rejected ####

::user/reject_spam

LOG=Rejecting suspected spam: $(stanza:top_tag())

BOUNCE=policy-violation