---
name: "couriergrey"
section: "8"
platform: "linux"
package: "couriergrey"
version: "0.3.2-5+b4"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/couriergrey"
---

# couriergrey(8)

greylisting filter for Courier MTA

## NAME

couriergrey - greylisting filter for Courier MTA

## SYNOPSIS

**couriergrey** *\[OPTION\]*

## DESCRIPTION

**couriergrey** is an implementation of the Courier MTA mail filter interface, that implements the greylist filtering method.

## OPTIONS

- **-v, --version**

  print software version

- **-s, --socket=PATH**

  location of the filter domain socket

- **-w, --whitelist=PATH**

  location of the whitelist file

- **-e, --expire=DAYS**

  expire database entries older than this number of days

- **--dumpwhitelist**

  dump the content of the parsed whitelist (may be used to debug the whitelist file)

- **-?, --help**

  show help message on available options

- **--usage**

  display brief usage message

### Exit states

- **0**

  couriergrey exited normally

- **1**

  couriergrey had problems starting up

## SEE ALSO

[**courierfilter**(8)](/courierfilter/8.md)

## AUTHOR

Matthias Wimmer