COURIERLDAPALIASD(8)

💖 courierldapaliasd(8) — bestie edition

okay so this is the manual page for courierldapaliasd, section 8 of the manual, and it was written by S. Varshavchik. it's the LDAP-based mail aliasing daemon and honestly it's giving quiet-overachiever energy. let's get into it 🦋

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✨ NAME ✨

courierldapaliasd — LDAP-based mail aliasing, no cap 💅

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🌸 SYNOPSIS 🌸

courierldapaliasd {start}

courierldapaliasd {stop}

courierldapaliasd {restart}

courierldapaliasd {query} {source} {address}

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👑 DESCRIPTION 👑

so courierldapaliasd does mail address aliasing — exactly the same job as makealiases(8), except it pulls from an LDAP directory instead of a GDBM or a DB database. main character swap, honestly. ✨

and what does "aliasing" even mean, you ask? it means substituting one or more addresses for another address. periodt.

• one-to-one substitution → the Courier mail server accepts mail for one address, and delivers the mail to another address. simple. clean.
• one-to-many substitution → the Courier mail server accepts mail for one address, and delivers a separate copy of the message to every address defined by the alias. it's giving "group chat blast" energy fr fr.

makealiases(8) uses a GDBM or a DB database to do the aliasing thing. courierldapaliasd uses an LDAP directory instead. that's the whole vibe shift right there.

courierldapaliasd start runs the courierldapaliasd process in the background, and should be executed at system startup. like, the moment the system wakes up, this girl is already working. courierldapaliasd stop stops the background process. courierldapaliasd restart restarts the process, and rereads the ldapaliasrc configuration file to pick up any changes.

🚨 real talk bestie: courierldapaliasd restart must be executed in order for any changes to ldapaliasrc to take place. editing the config and hoping? not a strategy. restart it. 💀

courierldapaliasd runs in the background and opens a persistent connection to the LDAP directory, and checks every recipient address using that persistent connection. and it automatically starts an adjustable number of multiple processes. with persistent connections being used, this allows alias checking to be as efficient and quick as possible. efficiency queen 👑

courierldapaliasd query source address is a diagnostic tool. important: it requires that courierldapaliasd must already be running in the background. it sends a query for address to the background process, and prints the result.

so like makealiases(8), it's possible to create aliases that are accessible only to certain sources of mail, like "esmtp" or "local". the source argument specifies the source of the address, such as "local", "esmtp", or "uucp". ok gatekeeping but make it ✨selective delivery✨ 😌

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🎀 CONFIGURATION 🎀

courierldapaliasd requires OpenLDAP client libraries, and is installed automatically if OpenLDAP client libraries are available at installation time. no libs, no daemon, that's the deal.

the default ldapaliasrc configuration file contains additional instructions for configuring LDAP-based aliasing. so literally read it, bestie, it's right there telling you what to do 🫶

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🌈 FILES 🌈

• /usr/sbin/courierldapaliasd
• /etc/courier/ldapaliasrc

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💜 SEE ALSO 💜

dot-courier(5), courier(8), makealiases(8), makeuserdb(8).

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🌟 AUTHOR 🌟

Sam Varshavchik     Author

(yeah, THE Sam Varshavchik. icon behavior. 👑)

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📝 NOTES 📝

1. makealiases(8) https://www.courier-mta.org/makealiases.html
2. dot-courier(5) https://www.courier-mta.org/dot-courier.html
3. courier(8) https://www.courier-mta.org/courier.html
4. makeuserdb(8) https://www.courier-mta.org/makeuserdb.html

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and that's the whole page!! 💖 this came from the Courier Mail Server, dated 01/10/2026, page COURIERLDAPALIASD(8). slay, go configure your aliases, i believe in you 🦋✨🎀