Your software
My Mautic version is: 5.0.1
My PHP version is: 7.4
Your problem
My problem is:
I have received the following error mensage when tried to sent a email for a contact.
Falha ao enviar o e-mail para andrelpmachado81@gmail.com: Expected response code “250” but got code “553”, with message “553 5.7.1 andre.parente+bounce_65a6bf28a77b7923117159@lucratizze.com.br: Sender address rejected: not owned by user andre.parente@lucratizze.com.br”.
Steps I have tried to fix the problem:
Verified the SMT P settings. email test Ok
Same error with multiple contacts from different email client