Milter Configuration

INPUT_MAIL_FILTER(`foo', `S=unix:/var/run/foo.sock, F=R')
INPUT_MAIL_FILTER(`bar', `S=inet6:999@localhost, F=T, T=S:1s;R:1s;E:5m')

define(`confINPUT_MAIL_FILTERS', `foo, bar')
MAIL_FILTER(`foo', `S=unix:/var/run/foo.sock, F=R')
MAIL_FILTER(`bar', `S=inet6:999@localhost, F=T, T=S:1s;R:1s;E:5m')

O InputMailFilters=foo, bar
Xfoo, S=unix:/var/run/f1.sock, F=R
Xbar, S=inet6:999@localhost, F=T, T=S:1s;R:1s;E:5m

• InputMailFilters (confINPUT_MAIL_FILTERS) determines the order filters will be called.

• Filter name
  • A unique label

• Connection method (S=protocol:location)
  • protocol is one of inet, inet6, unix, or local (same as unix)
  • location is port@host for inet and inet6 and a path name for unix and local

• Flags (F=)
  • If no flags specified and filter not available, run as if filter wasn't configured

  Flag	Description
  R	Reject connection if filter unavailable
  T	Temporary fail connection if filter unavailable

• Timeouts (T=)
  • Individual timeouts separated by semicolons
  • Only need to specify those that are different than default

  Letter	Meaning	Default
  S	Timeout for sending information from the MTA to a filter	10s
  R	Timeout for reading reply from the filter	10s
  E	Overall timeout between sending end-of-message to filter and waiting for the final acknowledgment	5m