Fix Milter: End-of-headers is not sent to milters that negotiate SMFIP_NOHDRS without SMFIP_NOEOH, so the transaction stalls until it times out

CHANGELOG.md

@@ -13,6 +13,7 @@ If you are upgrading from v0.16.x, replace the binary (or run `docker pull`). If
 
 ## Fixed
 - RocksDB: Blob garbage collection rewrites every stored blob on each compaction of the blobs column family, about once per 128MB of new mail.
+- Milter: End-of-headers is not sent to milters that negotiate `SMFIP_NOHDRS` without `SMFIP_NOEOH`, so the transaction stalls until it times out.
 
 ## [0.16.25] - 2026-10-05
 

crates/smtp/src/inbound/milter/client.rs

@@ -238,8 +238,9 @@ impl<T: AsyncRead + AsyncWrite + Unpin> MilterClient<T> {
                     }
                 }
             }
+        }
 
-            // Write EndOfHeaders
+        if !self.has_option(SMFIP_NOEOH) {
             self.write(Command::EndOfHeader).await?;
             if !self.has_option(SMFIP_NR_EOH) {
                 return self.read().await?.into_action();