Question : New Mail Server having issues sending mail to Hotmail,Yahoo

I just set up our Mail Server using Smarter Mail from SmarterTools
and I can send email to some servers like Gmail but I am having issues sending it to Hotmail and also Yahoo

when I do a dns Report on my domain everything seems to look ok
and when I do a spam lookup I don't show up anywhere

I am trying to find a problem but cant see one anywhere
is there someplace I can check and find out why my emails aren't getting to Hotmail and Yahoo?

Answer : New Mail Server having issues sending mail to Hotmail,Yahoo

I ended up hiring someone to take care of it
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