---
name: "kpopper"
section: "8"
platform: "linux"
package: "kerberos4kth-servers"
version: "1.2.2-11.2"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/kpopper"
---

# kpopper(8)

POP3 server

## NAME

**popper** – POP3 server

## SYNOPSIS

**popper** \[**-k**\] \[**-a** *none*otp\] \[**-t** *file*\] \[**-T** *seconds*\] \[**-d**\] \[**-i**\] \[**-p** *port*\] \[**--address-log=***file*\]

## DESCRIPTION

**popper** serves mail via the Post Office Protocol.  Supported options include:

-

  **-a** *none*otp, **--auth-mode=***none*otp tells **popper** what authentication modes are acceptable, passing *otp* disables clear text passwords. This has only effect when not using Kerberos authentication.

-

  **--address-log=***file* logs the addresses of all clients to the specified file

-

  **-d**, **--debug** enables more verbose log messages

-

  **-i**, **--interactive** when not started by inetd, this flag tells **popper** that it has to create a socket by itself

-

  **-k**, **--kerberos** tells **popper** to use the Kerberos for authentication.

-

  **-p** *port*, **--port=***port* port to listen to, in combination with **-i**

-

  **-t** *file*, **--trace-file=***file* trace all command to file

-

  **-T** *seconds*, **--timeout=***seconds* set timeout to something other than the default of 120 seconds

## SEE ALSO

[push(8)](/push/8.md), movemail(8)

## STANDARDS

RFC1939 (Post Office Protocol - Version 3)

## AUTHORS

The server was initially developed at the University of California, Berkeley.

Many changes has been made as part of the KTH Kerberos distributions.