Unable to send mail to yahoo

Hi to all, fresh hestia install in a contabo server with debian 12.

So the problem is that i can not send mail to a yahoo account, i can receive from yahoo. Also i can successfully send and receive in any gmail, hotmail mail accounts.

Any idea ?

The error i get:

You checked ip here ?

i just check it and it is clean:

Search Google for SMTP error 553 for your answer. The issue isn’t related to Hestia.

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