Need to check for open relay servers, here is the script I wrote in perl to auto check from a list of IPs or Hostnames.
The hardest part was to grab the response from the server
smtp->code()
smtp-> message()
STDOUT the responses of the server!
Requires: Perl, NET::SMTP
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System Administrator
I’ve found a tool for windows box that scan alot of open relay tests at a click here: http://sites.google.com/site/testersmtprelay/