mprobe(8)

NAME
mprobe - smtp-server aliveness probe

SYNOPSIS
mprobe hostname

DESCRIPTION
mprobe is usable to test, if the named host (no IP address usable!) has a smtp-server that responds properly.

EXIT CODES

0   All is well, smtp-server responded just fine

2   Can't resolve target hostname

3   mprobe internal failure, can't create socket (should not happen!)

4   failed to connect to the remote host

5   mprobe internal failure, fdopen() failed.. (should not happen!)

17, 19
    The remote smtp-server hung-up on us, most likely

18  The remote smtp-server did respond something, but it did not begin with "220"

20  Timeout (60 seconds) from start of processing.

99  Missing mandatory host parameter.

SEE ALSO
scheduler(8), smtpserver(8), smtp(8)

AUTHOR
This tool is authored and copyright by: Matti Aarnio <mea@nic.funet.fi>