On Thu, Apr 16, 2009 at 07:56:04PM +1000, Alex Samad (alex@samad.com.au) wrote: > can you use nmap ? It will tell you if the port is open or not, but not whether there is a mail server behind it willing to talk to you. I guess you could first use nmap to check the port and only then try telnetting to it. -- Tapani Tarvainen