diff --git a/src/email/types.rs b/src/email/types.rs
index a42fc047..85c6376f 100644
--- a/src/email/types.rs
+++ b/src/email/types.rs
@@ -364,10 +364,16 @@ impl EmailService {
                 .map_err(|e| format!("SMTP relay error: {}", e))?
                 .port(smtp_port)
                 .credentials(creds)
+                .hello_name(lettre::transport::smtp::ClientId::Domain(
+                    "mail.pragmatismo.com.br".to_string(),
+                ))
                 .build()
         } else {
             SmtpTransport::builder_dangerous(&smtp_host)
                 .port(smtp_port)
+                .hello_name(lettre::transport::smtp::ClientId::Domain(
+                    "mail.pragmatismo.com.br".to_string(),
+                ))
                 .build()
         };