delivery-queue(8gx)

💖 NAME 💖

okay so this is the Gromox admin reference page for delivery-queue(8gx) — the LMTP/SMTP frontend for local delivery. yes bestie, that's the whole name-and-what-it-is situation. 💅

✨ SYNOPSIS ✨

delivery-queue [-c config]

🦋 DESCRIPTION 🦋

delivery-queue is an additional mail queue in front of delivery(8gx). It may be removed in a future version. so like… it’s giving “extra queue era,” but also lowkey may not survive forever, so don’t get too attached bestie. 💀

🌸 OPTIONS 🌸

• -c config — read configuration directives from the given file. If this option is not specified, /etc/gromox/gromox.cfg and /etc/gromox/smtp.cfg will be read. 🫶
• -? — display option summary. icon.

All time-based command-line options and configuration file directives are subject to the syntax described in gromox(7), section "Duration specifications". ⏰

🧩 CONFIGURATION DIRECTIVES (gromox.cfg) 🧩

The following directives are recognized when reading from /etc/gromox/gromox.cfg, or when the -c option is used to specify a custom file:

• daemons_fd_limit — in gromox-delivery-queue, this is treated as an alias for lda_fd_limit. 🌀
• lda_fd_limit — request that the file descriptor table be at least this large. The magic value 0 indicates that the system default hard limit (rlim_max, cf. setrlimit(2)) should be used. Default: 0.
• lda_listen — a space-separated list of bind address specifiers to expose standard SMTP/LMTP (unencrypted and/or explicit STARTTLS) on. Default: [::]:25.
• lda_listen_tls — a space-separated list of bind address specifiers to expose implicit-TLS SMTP (SMTPS)/LMTP on. (Port 465 is the recommendation from RFC 8314.) Default: [::]:465.
• lda_recipient_delimiter — the set of characters that separate an email address into localpart and extension. This mirrors the "recipient_delimiter" directive from postconf(5). Default: (empty).
• lda_support_haproxy — this directive sets the expectation for incoming connections to carry haproxy’s "PROXY" protocol extension version 2 (2), or no such header (0). When a (reverse) proxy is placed in front of gromox-delivery-queue, the address that gxdq normally sees is the proxy address (e.g. ::1). A proxy can use this protocol extension to convey the actual client address, and gximap can pick this up for its own reporting, which in turn is useful for e.g. fail2ban setups. Default: 0.

🛠️ CONFIGURATION DIRECTIVES (smtp.cfg) 🛠️

The following directives are recognized when reading from /etc/gromox/smtp.cfg, or when the -c option is used to specify a custom file:

• command_protocol — selects what kind of hello command is accepted of clients. Can be lmtp, smtp or both. Default: both.
• config_file_path — colon-separated list of directories which will be scanned when locating further configuration files, especially those used by subcomponent instances. (For example, mysql_adaptor(4gx) would be directed to look at /etc/gromox/smtp/mysql_adaptor.cfg before /etc/gromox/mysql_adaptor.cfg.) Default: /etc/gromox/smtp:/etc/gromox.
• context_average_mem — Default: 256K.
• context_max_mem — Default: 2M.
• context_num — Default: 200.
• data_file_path — colon-separated list of directories which will be scanned when locating data files. Default: /usr/share/gromox/smtp.
• host_id — a unique identifier for this system. It is used for greeting lines emitted by delivery-queue on the network. Default: (system hostname).
• lda_listen_addr — deprecated in favor of gromox.cfg:lda_listen / gromox.cfg:lda_listen_tls.
• lda_listen_port — deprecated in favor of gromox.cfg:lda_listen.
• lda_listen_tls_port — deprecated in favor of gromox.cfg:lda_listen_tls.
• lda_log_file — target for log messages here. Special values: "-" (stderr/syslog depending on parent PID) or "syslog" are recognized. Default: - (auto).
• lda_log_level — maximum verbosity of logging. 1=crit, 2=error, 3=warn, 4=notice, 5=info, 6=debug. Default: 4 (notice).
• lda_thread_charge_num — the maximum number of connections that each thread is allowed to process. Default: 40.
• lda_thread_init_num — the minimum number of client processing threads to keep around. Default: 1.
• mail_max_length — maximum permitted length of a message. Default: 64M.
• running_identity — an unprivileged user account to switch the process to after startup. To inhibit the switch, assign the empty value. Default: gromox.
• smtp_certificate_passwd — the password to unlock TLS certificates. Default: (unset).
• smtp_certificate_path — a colon-separated list of TLS certificate files. The complete certificate chain should be present (as there is no other config directive to pull CA certs in, and implicit loading from system directories is not guaranteed by Gromox). Default: (unset).
• smtp_conn_timeout — if an SMTP connection is inactive for the given period, the connection is terminated. Default: 3 minutes.
• smtp_force_starttls — this flag controls whether clients must utilize TLS, either by way of implicit TLS (cf. lda_listen_tls_port), or through the STARTTLS command. Default: false.
• smtp_private_key_path — a colon-separated list of TLS certificate private key files. Default: (unset).
• smtp_support_pipeline — this flag controls the offering of the PIPELINING extension (RFC 2920) to clients. Default: true.
• smtp_support_starttls — this flag controls the offering of the STARTTLS extension (RFC 3027) to clients. Default: false.
• tls_min_proto — 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.

🚨 SIGNALS 🚨

Upon receipt of SIGHUP, configuration files are re-read, but only a few select directives can be changed this way, as many parts do not implement reload. so do not assume a full glow-up reload, bestie. 🙈

📁 FILES 📁

• data_file_path/smtp_code.txt: mapping from internal SMTP error codes to textual descriptions. 💌

👀 SEE ALSO 👀

gromox(7), delivery(8gx), midb_agent(4gx). go read those too, iykyk. 🫶

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source/version: Gromox · manual: delivery-queue(8gx) · date: not listed on this page. that’s the footer, periodt. 💅