Re: SMTP and Port 25

HD wrote:
Hello,

We have many applications in Delphi 6 and 7 and when sending E-Mail, we use Indy's SMTP component. Lately we have had to unblocked port 25 on the Exchange server in order to make the applications work.
But now, a security consultant is telling us that Port 25 needs to be blocked again.

Can anyone give me a solution that would be relatively easy to implement on so many applications.

Thank you,

H. Dumas



You could put a SSH server on the exchange box and then add a SSH tunnel component and simply tunnel the port 25 traffic.

I have a example of using Synapse to create the tunnel right in a Delphi app. You can download it here: http://www.amsoftwaredesign.com/downloads/synapse_ssh_test.zip

By tunneling your security guy will be happy and you get full data encryption as well.

You could also use Putty's plink.exe and use a pipe via createprocess instead of the synapse solution.

--
Tony Caduto
AM Software Design
Home of Lightning Admin for PostgreSQL and MySQL
http://www.amsoftwaredesign.com
.

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