|PUBLIC-INBOX-POP3D(1)||public-inbox user manual||PUBLIC-INBOX-POP3D(1)|
public-inbox-pop3d - POP3 server for sharing public-inboxes
public-inbox-pop3d provides a POP3 daemon for public-inbox. It uses options and environment variables common to all read-only public-inbox-daemon(8) implementations, but requires additional read-write storage to keep track of deleted messages on a per-user basis.
Like public-inbox-imapd(1), "public-inbox-pop3d" will never require write access to the directory where the public-inboxes are stored.
It is designed for anonymous access, thus the password is always "anonymous" (all lower-case).
Usernames are of the format:
Where $UUID is the output of the uuidgen(1) command. Dash ("-") characters in UUIDs are ignored, and "[A-F]" hex characters are case-insensitive. Users should keep their UUIDs private to prevent others from deleting unretrieved messages. Users may switch to a new UUID at any time to retrieve previously-retrieved messages.
Historical slices of 50K messages are available by suffixing the integer $SLICE, where 0 is the oldest.
To save storage, "publicinbox.pop3state" only stores the highest-numbered deleted message
See common options in "OPTIONS" in public-inbox-daemon(8).
- -l PROTOCOL://ADDRESS/?cert=/path/to/cert,key=/path/to/key
- --listen PROTOCOL://ADDRESS/?cert=/path/to/cert,key=/path/to/key
- In addition to the normal
switch described in public-inbox-daemon(8), the
"PROTOCOL" prefix (e.g.
"pop3s://") may be specified to force a
For STARTTLS and POP3S support, the "cert" and "key" may be specified on a per-listener basis after a "?" character and separated by ",". These directives are per-directive, and it's possible to use a different cert for every listener.
- --cert /path/to/cert
- The default TLS certificate for optional STARTTLS and POP3S support if the
"cert" option is not given with
If using systemd-compatible socket activation and a TCP listener on port 995 is inherited, it is automatically POP3S when this option is given. When a listener on port 110 is inherited and this option is given, it automatically gets STARTTLS support.
- --key /path/to/key
- The default private TLS certificate key for optional STARTTLS and POP3S support if the "key" option is not given with "--listen". The private key may be concatenated into the path used by "--cert", in which case this option is not needed.
Feedback welcome via plain-text mail to <mailto:firstname.lastname@example.org>
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License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>