.\" Copyright (c) 2001 - 2003 Kungliga Tekniska Högskolan
.\" (Royal Institute of Technology, Stockholm, Sweden). 
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.\" $Id: popper.8,v 1.10 2003/04/16 20:49:54 lha Exp $
.\"
.Dd April 16, 2003
.Dt POPPER 8
.Os HEIMDAL
.Sh NAME
.Nm popper
.Nd
POP3 server
.Sh SYNOPSIS
.Nm
.Op Fl k
.Op Fl a Ar none Ns \*(Ba Ns otp
.Op Fl t Ar file
.Op Fl T Ar seconds
.Op Fl d
.Op Fl i
.Op Fl p Ar port
.Op Fl -address-log= Ns Pa file
.Sh DESCRIPTION
.Nm
serves mail via the Post Office Protocol.  Supported options include:
.Bl -tag -width Ds
.It Xo
.Fl a Ar none Ns \*(Ba Ns otp ,
.Fl -auth-mode= Ns Ar none Ns \*(Ba Ns otp
.Xc
tells
.Nm
what authentication modes are acceptable, passing
.Ar otp
disables clear text passwords. Otp doesn't disable Kerberos
authentication, only cleartext passwords.
.It Xo
.Fl -address-log= Ns Pa file
.Xc
logs the addresses of all clients to the specified file
.It Xo
.Fl d ,
.Fl -debug
.Xc
enables more verbose log messages
.It Xo
.Fl i ,
.Fl -interactive
.Xc
when not started by inetd, this flag tells
.Nm
that it has to create a socket by itself
.It Xo
.Fl k ,
.Fl -kerberos
.Xc
tells
.Nm
to use the Kerberos for authentication.
.It Xo
.Fl p Ar port ,
.Fl -port= Ns Ar port
.Xc
port to listen to, in combination with
.Fl i
.It Xo
.Fl t Ar file ,
.Fl -trace-file= Ns Ar file
.Xc
trace all commands to file
.It Xo
.Fl T Ar seconds ,
.Fl -timeout= Ns Ar seconds
.Xc
set timeout to something other than the default of 120 seconds
.El
.\".Sh ENVIRONMENT
.\".Sh FILES
.\".Sh EXAMPLES
.\".Sh DIAGNOSTICS
.Sh SEE ALSO
.Xr push 8 ,
.Xr movemail 8
.Sh STANDARDS
RFC1939 (Post Office Protocol - Version 3)
.\" RFC2449 (POP3 Extension Mechanism)
.\".Sh HISTORY
.Sh AUTHORS
The server was initially developed at the University of California,
Berkeley.
.Pp
Many changes have been made as part of the KTH Kerberos distributions.
.\".Sh BUGS