Linux vmi1507467.contaboserver.net 5.4.0-105-generic #119-Ubuntu SMP Mon Mar 7 18:49:24 UTC 2022 x86_64 SOFT :ApachePHP :8.0.30/etc/84.21.171.84 UPLOAD eximrejects host_accept_relay: Please turn on SMTP Authentication in your mail client. $sender_fullhost is not permitted to relay through this server without authentication. BASE64 : NO YES