small fix

src/main.rs

@@ -133,7 +133,7 @@ async fn send_email(
 ) -> eyre::Result<()> {
     use lettre::{Message, Transport};
     let email = Message::builder()
-        .from("infracoll <root@infracoll>".parse().unwrap())
+        .from(smtp.username.parse().unwrap())
         .to(email.parse()?)
         .subject(format!(
             "restic-alarm: inactive repository {}",