NAME

       pop3test - Cyrus IMAP documentation

       Interactive POP3 test program.

SYNOPSIS

       pop3test [ -t keyfile ] [ -p port ] [ -m mechanism ] [ -a userid ]
           [ -u userid ] [ -k num ] [ -l num ] [ -r realm ] [ -f file ]
           [ -n num ] [ -s ] [ -c ] [ -i ] [ -v ] [ -w passwd ] [ -o option=value ] hostname

DESCRIPTION

       This is actually installed as a hard linked copy of imtest(1).

       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 an pop3 server.  Also  those  developing  POP3  clients  find  it
       useful.

OPTIONS

       -t keyfile
              Enable  TLS.   keyfile  contains  the  TLS public and private keys.  Specify "" to negotiate a TLS
              encryption layer but not use TLS authentication.

       -p port
              Port to connect to. If left off this defaults to pop3 as defined in /etc/services.

       -m mechanism
              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.

       -a userid
              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.

       -u userid
              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 imtest 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.

       -r realm
              Specify  the  realm to use. Certain authentication mechanisms (e.g. DIGEST-MD5) may require one to
              specify the realm.

       -f file
              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 correct response).

       -i     Don't send an initial client response for SASL mechanisms, even if the protocol supports it.

       -v     Verbose. Print out more information than usual.

       -w passwd
              Password to use (if not supplied, we will prompt).

       -o option=value
              Set the SASL option to value.

EXAMPLES

SEE ALSO

       pop3d(8)

AUTHOR

       The Cyrus Team, Nic Bernstein (Onlight)

COPYRIGHT

       1993-2017, The Cyrus Team