Delivery to the following recipient failed permanently:
email address removed by Marisa
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain etecsa.cu by imx2.etecsa.cu. [200.55.152.133].
The error that the other server returned was:
550 5.7.1 This message is blocked due to security reason
Question is this some mail delivery error and Iddon'thave to worry or
Is this scam?
Please help me out, tthank you for your time.
username removed by Marisa
Edit 2, sorry if Iposted this in the wrong forum