CentOS 7.0 - man page for pop3test (centos section 1)
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pop3test - interactive POP3 test program
pop3test [ -t keyfile ] [ -p port ] [ -m mechanism ]
[ -a userid ] [ -u userid ] [ -k num ] [ -l num ]
[ -r realm ] [ -f file ] [ -n num ] [ -s ] [ -c ]
[ -i ] [ -o option=value ] [ -v ] hostname
pop3test is a utility that allows you to authenticate to a POP3 server and interactively
issue commands to it. Once authenticated you may issue any POP3 command by simply typing
it in. It is capable of multiple SASL authentication mechanisms and handles encryption
layers transparently. This utility is often used for testing the operation of a pop3
server. Also those developing POP3 clients find it useful.
Enable TLS. keyfile contains the TLS public and private keys. Specify "" to nego-
tiate a TLS encryption layer but not use TLS authentication.
Port to connect to. If left off this defaults to pop3 as defined in /etc/services.
Force pop3test to use mechanism for authentication. If not specified the strongest
authentication mechanism supported by the server is chosen. Specify user to use
the USER/PASS commands or apop to use the APOP command instead of AUTH.
Userid to use for authentication; defaults to the current user. This is the userid
whose password or credentials will be presented to the server for verification.
Userid to use for authorization; defaults to the current user. This is the userid
whose identity will be assumed after authentication. NOTE: This is only used with
SASL mechanisms that allow proxying (e.g. PLAIN, DIGEST-MD5).
-k num Minimum protection layer required.
-l num Maximum protection layer to use (0=none; 1=integrity; etc). For example if you are
using the KERBEROS_V4 authentication mechanism specifying 0 will force pop3test to
not use any layer and specifying 1 will force it to use the integrity layer. By
default the maximum supported protection layer will be used.
Specify the realm to use. Certain authentication mechanisms (e.g. DIGEST-MD5) may
require one to specify the realm.
Pipe file into connection after authentication.
-n num Number of authentication attempts; default = 1. The client will attempt to do
SSL/TLS session reuse and/or fast reauth (e.g. DIGEST-MD5), if possible.
-s Enable POP3 over SSL (pop3s).
-c Enable challenge prompt callbacks. This will cause the OTP mechanism to ask for
the the one-time password instead of the secret pass-phrase (library generates the
-i Don't send an initial client response for SASL mechanisms, even if the protocol
Set the SASL option to value.
-v Verbose. Print out more information than usual.
CMU Project Cyrus POP3TEST(1)
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