Como resolver ou interpretar o seguinte erro? Não tenho certeza se algo deve ser feito no cliente (remetente ou conta de envio de um domínio) ou pedir ajuda aos postmasters remotos.
<[email protected]> (expanded from <[email protected]>): host
smtpz4.laposte.net[160.92.124.66] said: 521 5.7.1 Service unavailable;
client 80.80.228.49 blocked using Return-Path. Les emails envoyes vers la
messagerie Laposte.net ont ete bloques par nos services. Afin de
regulariser votre situation, nous vous invitons a cliquer sur le lien
ci-dessous et a suivre la procedure. The emails sent to the mail host
Laposte.net were blocked by our services. To regularize your situation
please click on the link below and follow the procedure
https://senderscore.org/rtbl/. LPN007_102 (in reply to RCPT TO command)