pop3 — Gromox POP3 server
pop3 [-c config]
- -c config
- Read configuration directives from the given file. If this option is not specified, /etc/gromox/pop3.cfg will be read if it exists.
- Output version information and exit.
- Display option summary.
The usual config file location is /etc/gromox/pop3.cfg.
- The amount of time a user is blocked from connecting to the service after too many failed logins.Default: 1 minute
- Colon-separated list of directories in which further configuration files, especially those used by plugin instances, will be searched.Default: /etc/gromox/pop3:/etc/gromox
- Default: 256K
- Lower clamp is 256.Default: 1024
- Default: 2M
- Default: 200
- Colon-separated list of directories in which static data files will be searched.Default: /usr/share/gromox/pop3
- Default: (system domainname)
- When enabled, the server will include an “IMPLEMENTATION” line in the CAPA response (RFC 2449 §6.9). This is disabled by default, as it can facilitate potential attackers’ information gathering.Default: no
- A unique identifier for this system. It is used in the POP3 protocol greeting lines (positive as well as negative). The identifier should only use characters allowed for hostnames.Default: (system hostname)
- The number of login tries a user is allowed before the account is blocked.Default: 3
- The password to unlock TLS certificates.Default: (unset)
- Filesystem path to a certificate file for use with encrypted connection. The complete certificate chain should be present (as there is no other config directive to pull CA certs in).Default: (unset)
- Log every incoming POP3 command and the return code of the operation in a minimal fashion to stderr. Level 1 emits commands that have failed execution, level 2 emits all commands.Default: 0
- If a POP3 connection stalls for the given period, the connection is terminated.Default: 3 minutes
- This flag controls whether clients must utilize TLS, either by way of implicit TLS (cf. pop3_listen_tls_port), or through the STLS command.Default: false
- AF_INET6 socket address to bind the POP3 service to.Default: ::
- The TCP port to expose the POP3 protocol service on. (The IP address is fixed to the wildcard address.)Default: 110
- The TCP port to expose implicit-TLS POP3 protocol service (POP3S) on. (The IP address is fixed to the wildcard address.)Default: (unset)
- Filesystem path to the key file needed to unlock the TLS certificate.Default: (unset)
- This flag controls the offering of the STARTTLS extension/STLS command (RFC 2595) to clients.Default: false
- The maximum number of connections that each thread is allowed to process.Default: 40
- The minimum number of client processing threads to keep around.Default: 1
- An unprivileged user account to switch the process to after startup. To inhibit the switch, assign the empty value.Default: gromox
- If set to yes, service plugins that fail to load on startup are ignored. If set to no, the daemon will exit if any plugin cannot be loaded.Default: no
- Path to a text file which lists the filenames of service plugins to load, one per line.Default: (built-in list)
- Path to a secondary directory where service plugins will be loaded from if a primary search in standard directories (as per ld.so(8)) was unsuccessful.Default: /usr/lib/gromox
- Directory for runtime variadic data.Default: /var/lib/gromox
- The lowest TLS version to offer. Possible values are: tls1.0, tls1.1, tls1.2, and, if supported by the system, tls1.3.Default: tls1.2
- data_file_path/pop3_code.txt: Mapping from internal POP3 error codes to textual descriptions.
- /usr/lib/gromox/libgxs_*.so: service plugins