diff --git a/Cargo.lock b/Cargo.lock
index 70b6ff7..7503ea8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1633,6 +1633,7 @@ checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 [[package]]
 name = "smtp-proto"
 version = "0.1.0"
+source = "git+https://github.com/stalwartlabs/smtp-proto#cf9640069dac6aec0eb8120b84e17e31d8bce958"
 
 [[package]]
 name = "smtp-server"
diff --git a/Cargo.toml b/Cargo.toml
index 280ef9c..14b4ea7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,13 +3,12 @@ name = "smtp-server"
 version = "0.1.0"
 edition = "2021"
 
-
 [dependencies]
 mail-auth = { path = "/home/vagrant/code/mail-auth" }
 mail-send = { path = "/home/vagrant/code/mail-send", default-features = false, features = ["cram-md5", "skip-ehlo"] }
 mail-parser = { git = "https://github.com/stalwartlabs/mail-parser", features = ["full_encoding", "ludicrous_mode"] } 
 mail-builder = { path = "/home/vagrant/code/mail-builder", features = ["ludicrous_mode"] } 
-smtp-proto = { path = "/home/vagrant/code/smtp-proto" }
+smtp-proto = { git = "https://github.com/stalwartlabs/smtp-proto" }
 ahash = { version = "0.8" }
 rustls = "0.20"
 rustls-pemfile = "1.0"
diff --git a/README.md b/README.md
index fe37445..91f0f9e 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 Stalwart SMTP Server
 
 # TODO
-- RBL
 - Greylist
 - Sieve
 - Spam filter
diff --git a/src/inbound/ehlo.rs b/src/inbound/ehlo.rs
index c6e68be..03b7ad8 100644
--- a/src/inbound/ehlo.rs
+++ b/src/inbound/ehlo.rs
@@ -261,6 +261,7 @@ impl<T: AsyncWrite + AsyncRead + IsTls + Unpin> Session<T> {
                     reply = ?ips,
                 );
             }
+            Err(mail_auth::Error::DnsRecordNotFound(_)) => (),
             Err(err) => {
                 tracing::debug!(parent: &self.span,
                     context = "dnsbl",
diff --git a/src/reporting/dkim.rs b/src/reporting/dkim.rs
index 3790444..dbe9f40 100644
--- a/src/reporting/dkim.rs
+++ b/src/reporting/dkim.rs
@@ -71,6 +71,7 @@ impl<T: AsyncWrite + AsyncRead + Unpin> Session<T> {
                 report,
                 &config.sign,
                 &self.span,
+                true,
             )
             .await;
     }
diff --git a/src/reporting/dmarc.rs b/src/reporting/dmarc.rs
index 2cf49ea..b1428f0 100644
--- a/src/reporting/dmarc.rs
+++ b/src/reporting/dmarc.rs
@@ -206,6 +206,7 @@ impl<T: AsyncWrite + AsyncRead + Unpin> Session<T> {
                         report,
                         &config.sign,
                         &self.span,
+                        true,
                     )
                     .await;
             } else {
@@ -379,7 +380,14 @@ impl GenerateDmarcReport for Arc<Core> {
             );
 
             // Send report
-            handle.block_on(core.send_report(from_addr, rua.iter(), message, &config.sign, &span));
+            handle.block_on(core.send_report(
+                from_addr,
+                rua.iter(),
+                message,
+                &config.sign,
+                &span,
+                false,
+            ));
 
             if let Err(err) = std::fs::remove_file(&path.path) {
                 tracing::warn!(
diff --git a/src/reporting/mod.rs b/src/reporting/mod.rs
index 0577393..2014e0e 100644
--- a/src/reporting/mod.rs
+++ b/src/reporting/mod.rs
@@ -1,4 +1,7 @@
-use std::{sync::Arc, time::SystemTime};
+use std::{
+    sync::Arc,
+    time::{Duration, SystemTime},
+};
 
 use mail_auth::{
     common::headers::HeaderWriter,
@@ -9,6 +12,7 @@ use mail_auth::{
     },
 };
 use mail_parser::DateTime;
+use rand::Rng;
 use tokio::io::{AsyncRead, AsyncWrite};
 
 use crate::{
@@ -104,6 +108,7 @@ impl Core {
         report: Vec<u8>,
         sign_config: &IfBlock<Vec<Arc<DkimSigner>>>,
         span: &tracing::Span,
+        deliver_now: bool,
     ) {
         // Build message
         let from_addr_lcase = from_addr.to_lowercase();
@@ -133,6 +138,19 @@ impl Core {
         // Sign message
         let signature = message.sign(sign_config, &report, span).await;
 
+        // Schedule delivery at a random time between now and the next 3 hours
+        if !deliver_now {
+            #[cfg(not(test))]
+            {
+                let delivery_time = Duration::from_secs(rand::thread_rng().gen_range(0..10800));
+                for domain in &mut message.domains {
+                    domain.retry.due += delivery_time;
+                    domain.expires += delivery_time;
+                    domain.notify.due += delivery_time;
+                }
+            }
+        }
+
         // Queue message
         self.queue
             .queue_message(message, signature.as_deref(), &report, span)
diff --git a/src/reporting/spf.rs b/src/reporting/spf.rs
index 6b24e22..327f5ac 100644
--- a/src/reporting/spf.rs
+++ b/src/reporting/spf.rs
@@ -71,6 +71,7 @@ impl<T: AsyncWrite + AsyncRead + Unpin> Session<T> {
                 report,
                 &config.sign,
                 &self.span,
+                true,
             )
             .await;
     }
diff --git a/src/reporting/tls.rs b/src/reporting/tls.rs
index 95c11d4..453d052 100644
--- a/src/reporting/tls.rs
+++ b/src/reporting/tls.rs
@@ -238,6 +238,7 @@ impl GenerateTlsReport for Arc<Core> {
                     message,
                     &config.sign,
                     &span,
+                    false,
                 ));
             } else {
                 tracing::info!(