diff --git a/src/authres.rs b/src/authres.rs
index 30c3d6838..23324c75a 100644
--- a/src/authres.rs
+++ b/src/authres.rs
@@ -181,9 +181,6 @@ fn parse_one_authres_header(header_value: &str, from_domain: &str) -> DkimResult
 /// is empty, we assume that the authserv-id has changed and start over with the
 /// new authserv-ids.
 ///
-/// TODO this is only half of the algorithm we thought of; we also wanted to save how
-/// sure we are about the authserv id. Like, a same-domain email is more trustworthy.
-///
 /// See [`handle_authres`].
 async fn update_authservid_candidates(
     context: &Context,
diff --git a/src/mimeparser.rs b/src/mimeparser.rs
index 0a32f77da..3f5deafd5 100644
--- a/src/mimeparser.rs
+++ b/src/mimeparser.rs
@@ -372,7 +372,7 @@ impl MimeMessage {
 
         if !decryption_info.dkim_results.allow_keychange {
             for part in parser.parts.iter_mut() {
-                part.error = Some("Seems like DKIM failed, this either is an attack or (more likely) a bug in Authentication-Results-checking. Please tell us about this at https://support.delta.chat.\n\nScan the sender's QR code to make this work again.".to_string());
+                part.error = Some("Seems like DKIM failed, this either is an attack or (more likely) a bug in Authentication-Results checking. Please tell us about this at https://support.delta.chat.".to_string());
             }
         }
         if warn_empty_signature && parser.signatures.is_empty() {
diff --git a/src/test_utils.rs b/src/test_utils.rs
index b3699be95..8f994e1b6 100644
--- a/src/test_utils.rs
+++ b/src/test_utils.rs
@@ -74,6 +74,7 @@ impl TestContextManager {
             .await
     }
 
+    /// Creates a new unconfigured test account.
     pub async fn unconfigured(&mut self) -> TestContext {
         TestContext::builder()
             .with_log_sink(self.log_tx.clone())