Dear Sirs. I use Windows Live Mail and I haven't been able to send messages for a long time. Everyone returns me with the text:
Delivery Error Report:
Reporting-MTA: dns; mailpro.tigocloud.com.py
Received-From-MTA: smtp; mailpro.tigocloud.com.py ([127.0.0.1])
Arrival-Date: Tue, 17 Mar 2020 08:41:36 -0300 (-03)
Final-Recipient: rfc822; *** Email address is removed for privacy ***
Action: failed
Status: 5.7.1
Diagnostic-Code: smtp; 550 5.7.1 Message content rejected, UBE, id = 09709-18
Last-Attempt-Date: Tue, 17 Mar 2020 08:41:40 -0300 (-03)
Can you help me solve this problem.
Thanks in advance
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