mprobe8

Usage

Overview

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

Exit status

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.