Cannot send mail

Cannot send mail

I am running ADSelfService Plus on a Windows 7 machine.  I have an SMTP server in house and I can telnet to port 25 on that server (Windows 2012) from the Windows 7 command line, however, I cannot send mail from the application.  I have other applications on that system that are able to send mail.  It tells me that is cannot connect to port 25 on that server.  Any ideas?

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