[Cialug] What mail server is it running?

[Tony Bibbs]

Usually telneting to the mail port (25) gives you some sort of information:

~ $ telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 localhost ESMTP Postfix

Nathan C. Smith wrote:
> If you are logged into a machine you haven't been on before, how do you tell
> what mail system (MTA) the machine is running?  - what process names do you
> look for?  How do you tell which ones) are installed if they are not
> running?  What files or directories?
> 
> Thanks.
> 
> -Nate
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