SMTPTEST(1)						      General Commands Manual						       SMTPTEST(1)

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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  authentica-
	      tion.  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)

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