Cannot set up smtp to send mail alerts

Cannot set up smtp to send mail alerts

Having problems in setting up smtp server in app manager. I am using the same smtp for my mail and it works. Wonder why it is not recognized by app manager. It tells me error - smtp is not running in <server> port 25. Please help. I think this application is useful and I am about to request my group to buy this and the "email set up" thing happened which is quite a disappointment for me...

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