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SMTPTEST(1)
NAME
  smtptest - interactive SMTP test program

SYNOPSIS
  smtptest [ -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

DESCRIPTION
  smtptest is a utility that allows you to authenticate to a SMTP server and
  interactively issue commands to it. Once authenticated you may issue any
  SMTP 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 smtp server. Also
  those developing SMTP 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 smtp as defined in
       /etc/services.

  -m mechanism
       Force smtptest to use mechanism for authentication. If not specified
       the strongest authentication mechanism supported by the server is
       chosen.

  -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 smtptest 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 SMTP over SSL (smtps).

  -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.

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

  -v   Verbose. Print out more information than usual.

SEE ALSO
  sendmail(8)

Index for Section 1

Alphabetical listing for S

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