Workmail email not being delivered.

How can I get someone from AWS to solve the issue below?

I´ve checked and I cannot do it, it has to be someone responsible for the ip(domain owners shouldn´t contact them).

-----Mensagem original----- De: mailer-daemon@amazonses.com [mailto:mailer-daemon@amazonses.com] Enviada em: terça-feira, 28 de fevereiro de 2023 10:32 Para: RH - Ativa Contabilidade Assunto: Undelivered Mail Returned to Sender An error occurred while trying to deliver the mail to the following recipients: 2023-02-28 13:31:46 : An error occurred while trying to deliver the mail to the following recipients: Technical report: Reporting-MTA: dns; a11-132.smtp-out.amazonses.com Action: failed Final-Recipient: rfc822; larissa@planningservice.com.br Diagnostic-Code: smtp; 554 5.7.1 Service unavailable; Client host [54.240.11.132] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBL588989 Status: 5.7.1 Action: failed Final-Recipient: rfc822; cintia@planningservice.com.br Diagnostic-Code: smtp; 554 5.7.1 Service unavailable; Client host [54.240.11.132] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBL588989 Status: 5.7.1