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SMTPTEST(1) SMTPTEST(1)
NAME
smtptest - interactive SMTP test program
SYNOPSIS
smtptest [ -t keyfile ] [ -p port ] [ -m mechanism ]
[ -u user ] [ -a user ] [ -k num ] [ -l num ]
[ -r realm ] [ -f file ] [ -n num ] [ -s ] [ -c ]
[ -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 authentica-
tion mechanisms and handles encryption layers transpar-
ently. This utility is often used for testing the opera-
tion 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 mech-
anism supported by the server is chosen.
-u user
Username to use for authentication; defaults to the
current user.
-a user
Authname to use for authentication; defaults to the
current user.
-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 pass-
word instead of the secret pass-phrase (library
generates the correct response).
-v Verbose. Print out more information than usual.
SEE ALSO
sendmail(8)
SMTPTEST(1)
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