Do not return CAPABILITIES after ManageSieve AUTH=PLAIN SASL exchange (closes #548)

README.md

@@ -59,7 +59,7 @@ Key features:
 - **SMTP** server:
   - Built-in [DMARC](https://datatracker.ietf.org/doc/html/rfc7489), [DKIM](https://datatracker.ietf.org/doc/html/rfc6376), [SPF](https://datatracker.ietf.org/doc/html/rfc7208) and [ARC](https://datatracker.ietf.org/doc/html/rfc8617) support for message authentication.
   - Strong transport security through [DANE](https://datatracker.ietf.org/doc/html/rfc6698), [MTA-STS](https://datatracker.ietf.org/doc/html/rfc8461) and [SMTP TLS](https://datatracker.ietf.org/doc/html/rfc8460) reporting.
-  - Inbound throttling and filtering with granular configuration rules, sieve scripting and milter integration.
+  - Inbound throttling and filtering with granular configuration rules, sieve scripting, MTA hooks and milter integration.
   - Distributed virtual queues with delayed delivery, priority delivery, quotas, routing rules and throttling support.
   - Envelope rewriting and message modification.
 - **Spam Phishing** filter:
@@ -81,6 +81,7 @@ Key features:
   - Email aliases, mailing lists, subaddressing and catch-all addresses support.
   - Automatic account configuration and discovery with [autoconfig](https://www.ietf.org/id/draft-bucksch-autoconfig-02.html) and [autodiscover](https://learn.microsoft.com/en-us/exchange/architecture/client-access/autodiscover?view=exchserver-2019). 
   - Integration with **OpenTelemetry** to enable monitoring, tracing, and performance analysis.
+  - Webhooks for event-driven automation.
   - Disk quotas.
 - **Web-based administration**:
   - Account, domain, group and mailing list management.

crates/managesieve/src/op/authenticate.rs

@@ -164,10 +164,7 @@ impl<T: SessionStream> Session<T> {
                 in_flight,
             };
 
-            let _ = self
-                .write(&StatusResponse::ok("Authentication successful").into_bytes())
-                .await;
-            self.handle_capability("Authentication successful").await
+            Ok(StatusResponse::ok("Authentication successful").into_bytes())
         } else {
             match &self.state {
                 State::NotAuthenticated { auth_failures }

tests/src/imap/managesieve.rs

@@ -49,10 +49,10 @@ pub async fn test() {
         .send("AUTHENTICATE \"PLAIN\" \"AGpkb2VAZXhhbXBsZS5jb20Ac2VjcmV0\"")
         .await;
     sieve.assert_read(ResponseType::Ok).await;
-    sieve
-        .assert_read(ResponseType::Ok)
-        .await
-        .assert_contains("MAXREDIRECTS");
+    /*sieve
+    .assert_read(ResponseType::Ok)
+    .await
+    .assert_contains("MAXREDIRECTS");*/
 
     // CheckScript
     sieve.send("CHECKSCRIPT \"if true { keep; }\"").await;