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Is Sophos central Email blacklisted?

Hello, can be Sophos Central Email blacklisted? 

I was trying to send emails to my clients and i had the following error:

Message not delivered

Your message could not be delivered to one or more recipients. The details are attached below.

For further assistance, please contact your IT Administrator.

Message details

Failure reason:

<soporte@a*****l.com.py>: host mail.a****l.com.py[xx.xx.xx.xx] said: 550-Sophos Anti Spam Engine has blocked this Email because the sender IP 550 Address is blacklisted. (in reply to RCPT TO command)

From:

soporte@i****s.com.py

To:

soporte@a*****l.com.py

Subject:

solicitud nro. : ##5551## - re: [caution: suspect sender] fwd:

Sent:

2019-09-20T12:39:10.000Z

Is there the possibility that Central outbound IP is blacklisted? 

If anyone knows anything it will be appreciated..

PS.: my client has Sophos XG Firewall with Email protection.. funny, Sophos blocking sophos haha.. 



Added tags
[edited by: Raphael Alganes at 8:32 AM (GMT -7) on 24 May 2023]
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