Citadel server core
citserver [-c] [-lLogFacility] [-xDebugLevel ] [-hHomeDir]
Citadel Server (the binary name is citserver) is the core of the Citadel Suite. It provides data storage and connection-oriented protocols such as IMAP/POP/SMTP. citserver will usualy be spawned via a system service such as systemd or sysvinit.
Switch Result ------ ------ -c Confirm binary compatibility and then exit. Used only for testing. -l Log facility. Usually "mail" -h[HomeDir] Data directory for this Citadel installation. -x debug level (1 to 9)
Default port bindings opened by citserver:
Port Description ---- ----------- 25 SMTP (MTA) 110 POP3 143 IMAP 504 Citadel protocol 587 SMTP (MSA)
Optional port bindings opened if you enable them:
465 SMTPS 993 IMAPS 995 POP3S
Unix Domain Sockets opened by citserver:
Socket name Purpose ----------- ------- citadel.socket Citadel lmtp.socket LMTP lmtp-unfiltered.socket LMTP, bypassing spam filters
In a self-contained build (Easy Install, Docker, etc.) all files will be stored in the /usr/local/citadel hierarchy.
In an LHFS build (used by some package maintainers), the following directory locations apply:
/usr/share/citadel-server Citadel's messages and help files /var/lib/citadel Citadel data files /var/run/citadel volatile files like the Unix Domain Sockets /etc/citadel Citadel configuration files /etc/init.d/citadel init script for CitServer; add reboot-safe parameters here. /etc/default/citadel Options to /etc/init.d/citadel in LHFS installations
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