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I can't connect on local SMTP Server into localhost.

It just from external servers.

Firewall Disabled.

The command was "telnet localhost 25".

And the result was: Connecting To localhost...Could not open connection to the host, on port 25: Connect failed.

Someone knows the solution?

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I discovered that, for my case, It was caused by antivirus software. The "Access Protection" from MCAFFEE was blocking the access to SMTP serve locally. I've disabled It and I've connected. – André Möller Jul 4 '11 at 19:01
Just answer your own question and mark it as an answer - this will help future visitors identifying a relevant solution. – the-wabbit Jul 4 '11 at 19:59

MAke sure to check your antivirus software, it may be denying this connection.

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