# #VERSION: $Id: courier-pop3d-ssl.xml,v 1.1 2004/06/29 20:33:32 sergio Exp $ # # pop3d-ssl created from pop3d-ssl.dist by sysconftool # # Do not alter lines that begin with ##, they are used when upgrading # this configuration. # # Copyright 2000-2002 Double Precision, Inc. See COPYING for # distribution information. # # This configuration file sets various options for the Courier-IMAP server # when used to handle SSL POP3 connections. # # SSL and non-SSL connections are handled by a dedicated instance of the # couriertcpd daemon. If you are accepting both SSL and non-SSL POP3 # connections, you will start two instances of couriertcpd, one on the # POP3 port 110, and another one on the POP3-SSL port 995. # # Download OpenSSL from http://www.openssl.org/ # ##NAME: SSLPORT:0 # # Options in the pop3d-ssl configuration file AUGMENT the options in the # pop3d configuration file. First the pop3d configuration file is read, # then the pop3d-ssl configuration file, so we do not have to redefine # anything. # # However, some things do have to be redefined. The port number is # specified by SSLPORT, instead of PORT. The default port is port 995. # # Multiple port numbers can be separated by commas. When multiple port # numbers are used it is possibly to select a specific IP address for a # given port as "ip.port". For example, "127.0.0.1.900,192.68.0.1.900" # accepts connections on port 900 on IP addresses 127.0.0.1 and 192.68.0.1 # The SSLADDRESS setting is a default for ports that do not have # a specified IP address. SSLPORT=995 ##NAME: SSLADDRESS:0 # # Address to listen on, can be set to a single IP address. # # SSLADDRESS=127.0.0.1 SSLADDRESS=0 ##NAME: SSLPIDFILE:0 # # You can also redefine AUTHMODULES, although I can't # think of why you'd want to do that. # # SSLPIDFILE=/var/run/courier/pop3d-ssl.pid ##NAME: POP3DSSLSTART:0 # # Whether or not to start POP3 over SSL on spop3 port: POP3DSSLSTART="YES" ##NAME: POP3_STARTTLS:0 # # Whether or not to implement the POP3 STLS extension: POP3_STARTTLS=YES ##NAME: POP3_TLS_REQUIRED:1 # # Set POP3_TLS_REQUIRED to 1 if you REQUIRE STARTTLS for everyone. # (this option advertises the LOGINDISABLED POP3 capability, until STARTTLS # is issued). POP3_TLS_REQUIRED="1" ##NAME: COURIERTLS:0 # # The following variables configure POP3 over SSL. If OpenSSL is available # during configuration, the couriertls helper gets compiled, and upon # installation a dummy TLS_CERTFILE gets generated. courieresmtpd will # automatically advertise the ESMTP STARTTLS extension if both TLS_CERTFILE # and COURIERTLS exist. # # WARNING: Peer certificate verification has NOT yet been tested. Proceed # at your own risk. Only the basic SSL/TLS functionality is known to be # working. Keep this in mind as you play with the following variables. COURIERTLS=/usr/bin/couriertls ##NAME: TLS_PROTOCOL:0 # # TLS_PROTOCOL sets the protocol version. The possible versions are: # # SSL2 - SSLv2 # SSL3 - SSLv3 # TLS1 - TLS1 TLS_PROTOCOL=SSL3 ##NAME: TLS_STARTTLS_PROTOCOL:0 # # TLS_STARTTLS_PROTOCOL is used instead of TLS_PROTOCOL for the POP3 STARTTLS # extension, as opposed to POP3 over SSL on port 995. # TLS_STARTTLS_PROTOCOL=TLS1 ##NAME: TLS_CIPHER_LIST:0 # # TLS_CIPHER_LIST optionally sets the list of ciphers to be used by the # OpenSSL library. In most situations you can leave TLS_CIPHER_LIST # undefined # # TLS_CIPHER_LIST="ALL:!ADH:RC4+RSA:+SSLv2:@STRENGTH" ##NAME: TLS_TIMEOUT:0 # TLS_TIMEOUT is currently not implemented, and reserved for future use. # This is supposed to be an inactivity timeout, but its not yet implemented. # ##NAME: TLS_DHCERTFILE:0 # # TLS_DHCERTFILE - PEM file that stores our Diffie-Hellman cipher pair. # When OpenSSL is compiled to use Diffie-Hellman ciphers instead of RSA # you must generate a DH pair that will be used. In most situations the # DH pair is to be treated as confidential, and the file specified by # TLS_DHCERTFILE must not be world-readable. # # TLS_DHCERTFILE= ##NAME: TLS_CERTFILE:0 # # TLS_CERTFILE - certificate to use. TLS_CERTFILE is required for SSL/TLS # servers, and is optional for SSL/TLS clients. TLS_CERTFILE is usually # treated as confidential, and must not be world-readable. # TLS_CERTFILE=/etc/courier/pop3d.pem ##NAME: TLS_TRUSTCERTS:0 # # TLS_TRUSTCERTS=pathname - load trusted certificates from pathname. # pathname can be a file or a directory. If a file, the file should # contain a list of trusted certificates, in PEM format. If a # directory, the directory should contain the trusted certificates, # in PEM format, one per file and hashed using OpenSSL's c_rehash # script. TLS_TRUSTCERTS is used by SSL/TLS clients (by specifying # the -domain option) and by SSL/TLS servers (TLS_VERIFYPEER is set # to PEER or REQUIREPEER). # # # TLS_TRUSTCERTS= ##NAME: TLS_VERIFYPEER:0 # # TLS_VERIFYPEER - how to verify client certificates. The possible values of # this setting are: # # NONE - do not verify anything # # PEER - verify the client certificate, if one's presented # # REQUIREPEER - require a client certificate, fail if one's not presented # # TLS_VERIFYPEER=NONE ##NAME: TLS_CACHE:0 # # A TLS/SSL session cache may slightly improve response for long-running # POP3 clients. TLS_CACHEFILE will be automatically created, TLS_CACHESIZE # bytes long, and used as a cache buffer. # # This is an experimental feature and should be disabled if it causes # problems with SSL clients. Disable SSL caching by commenting out the # following settings: TLS_CACHEFILE=/var/lib/courier/couriersslcache TLS_CACHESIZE=524288 |