CMS Made Simple Forums

Hi, maybe someone can help me solve this. I'm setting up CMSMailer and when i'm selecting smtp as the mailing option and then test, the browser will think and think and think and then nothing get sent.
I'm confident the settings inserted are correct. Tried in outlook and it works.

Has anyone else experience this?
Do you know what it means?

Thanks

looks like the smtp port was different. I wish there was an error message with explanation.