Unable to send emails to Hotmail or gmail from Workspaces

Question

Hello,   
  
I am experiencing a very weird issue. When I try to send an email from Outlook (Office 365 Business Premium) ***in Workspaces*** it gives me the below error message. This happens regardless of whether I use Outlook desktop client or web app.   
  
-->The public IP is - 18.205.83.94. The Workspaces IP is - 172.16.1.60. <--  
  
When I send the same type of email from ***outside Workspaces*** (e.g. using web app on my computer or via a generic email client on my phone) - it goes through without any issues.   
  
So, it seems like the culprit is the AWS Public IP Address. If so, how do I solve this issue?.

Error Message Details:  
XXXXXXXX@hotmail.com  
Your message wasn't delivered because the recipient's email provider rejected it.  
  
Diagnostic information for administrators:  
Generating server: CY4PR2201MB1109.namprd22.prod.outlook.com  
XXXXXXXX@hotmail.com  
Remote Server returned '550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653 AS(8561) \[CY4PR2201MB1526.namprd22.prod.outlook.com]'  
Original message headers:  
Received: from CY4PR2201MB1109.namprd22.prod.outlook.com  
 (XXXXXXXXXXXXXXX) by CY4PR2201MB1109.namprd22.prod.outlook.com  
 (XXXXXXXXXXXXXXX) with mapi id 15.20.2581.007; Sat, 28 Dec 2019  
 14:02:59 +0000  
MIME-Version: 1.0  
Content-Type: text/plain  
Date: Sat, 28 Dec 2019 14:02:59 +0000  
Message-ID:  
	  
Subject: Re: Test email  
  
Edited by: DannyVC on Dec 28, 2019 8:01 AM

Answer

Hi All,   
  
The issue was related to the public ip address. I generated and then allocated an elastic ip address to my workspaces and all my issues are now solved.   
  
Not sure why the public ip address was causing so many issues.   
  
Cheers !

Unable to send emails to Hotmail or gmail from Workspaces

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