Unable to validate connector O365

Hello,

I just finished deploying a Hybrid configuration for Office 365 and Exchange 2013. Everything went fine but when I validate my outbound connector it fails with the following error:
450 4.4.316 Connection refused [Message=Socket error code 10061]
[LastAttemptedServerName=owa.glaciercap.com] [LastAttemptedIP=12.184.1.88:25] [CY1NAM02FT039.eop-nam02.prod.protection.outlook.com]

I white-listed all the EOP IPs in our firewall so I'm not sure why this is happening. Did I miss something?
Kenny PlacidoSr System AdministratorAsked:
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timgreen7077Exchange EngineerCommented:
Is it pointing to your MX record IP address? If not, point it to your MX record name or IP of your MX record.
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Kenny PlacidoSr System AdministratorAuthor Commented:
I figured that it was my firewall. We opened it up to the internet and it worked.
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timgreen7077Exchange EngineerCommented:
Good deal.
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