transmit with DKIM

9 files changed, 240 insertions, 91 deletions

diff --git a/src/src/transport.c b/src/src/transport.c
index e55e81f2f..3987fad3e 100644
--- a/src/src/transport.c
+++ b/src/src/transport.c
@@ -416,7 +416,6 @@ for (ptr = start; ptr < end; ptr++)
   room for the next uschar, plus a possible extra CR for an LF, plus the escape
   string. */
 
-  /*XXX CHUNKING: probably want to increase DELIVER_OUT_BUFFER_SIZE */
   if ((len = chunk_ptr - deliver_out_buffer) > mlen)
     {
     /* If CHUNKING, prefix with BDAT (size) NON-LAST.  Also, reap responses
@@ -1058,8 +1057,9 @@ uschar * dkim_spool_name;
 int sread = 0;
 int wwritten = 0;
 uschar *dkim_signature = NULL;
-int siglen;
+int siglen = 0;
 off_t k_file_size;
+int options;
 
 /* If we can't sign, just call the original function. */
 
@@ -1079,8 +1079,10 @@ if ((dkim_fd = Uopen(dkim_spool_name, O_RDWR|O_CREAT|O_TRUNC, SPOOL_MODE)) < 0)
 
 /* Call original function to write the -K file; does the CRLF expansion */
 
+options = tctx->options;
 tctx->options &= ~topt_use_bdat;
 rc = transport_write_message(dkim_fd, tctx, 0);
+tctx->options = options;
 
 /* Save error state. We must clean up before returning. */
 if (!rc)
@@ -1089,62 +1091,61 @@ if (!rc)
   goto CLEANUP;
   }
 
-if (dkim->dkim_private_key && dkim->dkim_domain && dkim->dkim_selector)
+/* Rewind file and feed it to the goats^W DKIM lib */
+lseek(dkim_fd, 0, SEEK_SET);
+dkim_signature = dkim_exim_sign(dkim_fd,
+				dkim->dkim_private_key,
+				dkim->dkim_domain,
+				dkim->dkim_selector,
+				dkim->dkim_canon,
+				dkim->dkim_sign_headers);
+if (dkim_signature)
+  siglen = Ustrlen(dkim_signature);
+else if (dkim->dkim_strict)
   {
-  /* Rewind file and feed it to the goats^W DKIM lib */
-  lseek(dkim_fd, 0, SEEK_SET);
-  dkim_signature = dkim_exim_sign(dkim_fd,
-				  dkim->dkim_private_key,
-				  dkim->dkim_domain,
-				  dkim->dkim_selector,
-				  dkim->dkim_canon,
-				  dkim->dkim_sign_headers);
-  if (!dkim_signature)
-    {
-    if (dkim->dkim_strict)
+  uschar *dkim_strict_result = expand_string(dkim->dkim_strict);
+  if (dkim_strict_result)
+    if ( (strcmpic(dkim->dkim_strict,US"1") == 0) ||
+	 (strcmpic(dkim->dkim_strict,US"true") == 0) )
       {
-      uschar *dkim_strict_result = expand_string(dkim->dkim_strict);
-      if (dkim_strict_result)
-	if ( (strcmpic(dkim->dkim_strict,US"1") == 0) ||
-	     (strcmpic(dkim->dkim_strict,US"true") == 0) )
-	  {
-	  /* Set errno to something halfway meaningful */
-	  save_errno = EACCES;
-	  log_write(0, LOG_MAIN, "DKIM: message could not be signed,"
-	    " and dkim_strict is set. Deferring message delivery.");
-	  rc = FALSE;
-	  goto CLEANUP;
-	  }
+      /* Set errno to something halfway meaningful */
+      save_errno = EACCES;
+      log_write(0, LOG_MAIN, "DKIM: message could not be signed,"
+	" and dkim_strict is set. Deferring message delivery.");
+      rc = FALSE;
+      goto CLEANUP;
       }
-    }
-
-  siglen = 0;
   }
 
-if (dkim_signature)
+#ifndef HAVE_LINUX_SENDFILE
+if (options & topt_use_bdat)
+#endif
+  k_file_size = lseek(dkim_fd, 0, SEEK_END); /* Fetch file size */
+
+if (options & topt_use_bdat)
   {
-  siglen = Ustrlen(dkim_signature);
-  while(siglen > 0)
+
+  /* On big messages output a precursor chunk to get any pipelined
+  MAIL & RCPT commands flushed, then reap the responses so we can
+  error out on RCPT rejects before sending megabytes. */
+
+  if (siglen + k_file_size > DELIVER_OUT_BUFFER_SIZE && siglen > 0)
     {
-#ifdef SUPPORT_TLS
-    wwritten = tls_out.active == out_fd
-      ? tls_write(FALSE, dkim_signature, siglen)
-      : write(out_fd, dkim_signature, siglen);
-#else
-    wwritten = write(out_fd, dkim_signature, siglen);
-#endif
-    if (wwritten == -1)
-      {
-      /* error, bail out */
-      save_errno = errno;
-      rc = FALSE;
-      goto CLEANUP;
-      }
-    siglen -= wwritten;
-    dkim_signature += wwritten;
+    if (  tctx->chunk_cb(out_fd, tctx, siglen, 0) != OK
+       || !transport_write_block(out_fd, dkim_signature, siglen)
+       || tctx->chunk_cb(out_fd, tctx, 0, tc_reap_prev) != OK
+       )
+      goto err;
+    siglen = 0;
     }
+
+  if (tctx->chunk_cb(out_fd, tctx, siglen + k_file_size, tc_chunk_last) != OK)
+    goto err;
   }
 
+if(siglen > 0 && !transport_write_block(out_fd, dkim_signature, siglen))
+  goto err;
+
 #ifdef HAVE_LINUX_SENDFILE
 /* We can use sendfile() to shove the file contents
    to the socket. However only if we don't use TLS,
@@ -1155,18 +1156,13 @@ if (tls_out.active != out_fd)
   ssize_t copied = 0;
   off_t offset = 0;
 
-  k_file_size = lseek(dkim_fd, 0, SEEK_END); /* Fetch file size */
-
   /* Rewind file */
   lseek(dkim_fd, 0, SEEK_SET);
 
   while(copied >= 0 && offset < k_file_size)
     copied = sendfile(out_fd, dkim_fd, &offset, k_file_size - offset);
   if (copied < 0)
-    {
-    save_errno = errno;
-    rc = FALSE;
-    }
+    goto err;
   }
 else
 
@@ -1192,12 +1188,7 @@ else
       wwritten = write(out_fd, p, sread);
 #endif
       if (wwritten == -1)
-	{
-	/* error, bail out */
-	save_errno = errno;
-	rc = FALSE;
-	goto CLEANUP;
-	}
+	goto err;
       p += wwritten;
       sread -= wwritten;
       }
@@ -1211,11 +1202,16 @@ else
   }
 
 CLEANUP:
-/* unlink -K file */
-(void)close(dkim_fd);
-Uunlink(dkim_spool_name);
-errno = save_errno;
-return rc;
+  /* unlink -K file */
+  (void)close(dkim_fd);
+  Uunlink(dkim_spool_name);
+  errno = save_errno;
+  return rc;
+
+err:
+  save_errno = errno;
+  rc = FALSE;
+  goto CLEANUP;
 }
 
 #endif
diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c
index 00274656c..a265e566e 100644
--- a/src/src/transports/smtp.c
+++ b/src/src/transports/smtp.c
@@ -2123,6 +2123,16 @@ if (tblock->filter_command != NULL)
     yield = ERROR;
     goto SEND_QUIT;
     }
+
+  if (  transport_filter_argv
+     && *transport_filter_argv
+     && **transport_filter_argv
+     && peer_offered & PEER_OFFERED_CHUNKING
+     )
+    {
+    peer_offered &= ~PEER_OFFERED_CHUNKING;
+    DEBUG(D_transport) debug_printf("CHUNKING not usable due to transport filter\n");
+    }
   }
 
 
diff --git a/test/confs/0900 b/test/confs/0900
index cdc6d84eb..3235f1ee7 100644
--- a/test/confs/0900
+++ b/test/confs/0900
@@ -1,5 +1,7 @@
 # Exim test configuration 0900
 SERVER=
+X=
+OPT=
 
 exim_path = EXIM_PATH
 keep_environment =
@@ -14,13 +16,14 @@ tls_advertise_hosts =
 
 # ----- Main settings -----
 
-domainlist local_domains = @
+domainlist local_domains = @ : test.ex
 
 acl_smtp_rcpt = check_recipient
 acl_smtp_data = check_data
 trusted_users = CALLER
 queue_only
 smtp_receive_timeout = 2s
+log_selector = +received_recipients
 
 
 # ----- ACL -----
@@ -44,7 +47,7 @@ begin routers
 to_server:
   driver = accept
   condition =	${if !eq {SERVER}{server}}
-  transport =	remote_smtp
+  transport =	remote_smtp${if eq {X}{dkim} {_dkim}}
   errors_to =	""
 
 fail_remote_domains:
@@ -81,6 +84,21 @@ remote_smtp:
   command_timeout = 2s
   final_timeout = 2s
 
+remote_smtp_dkim:
+  driver = smtp
+  hosts =	127.0.0.1
+  port =	PORT_S
+  allow_localhost
+  command_timeout = 2s
+  final_timeout = 2s
+
+  dkim_domain =		test.ex
+  dkim_selector =	sel
+  dkim_private_key =	DIR/aux-fixed/dkim/dkim.private
+.ifndef HEADERS_MAXSIZE
+  dkim_sign_headers =	OPT
+.endif
+
 # ----- Retry -----
 
 begin retry
diff --git a/test/confs/4509 b/test/confs/4509
new file mode 120000
index 000000000..1bb987150
--- /dev/null
+++ b/test/confs/4509
@@ -0,0 +1 @@
+0900
\ No newline at end of file
diff --git a/test/log/0900 b/test/log/0900
index 37d70da7c..10e96f9a3 100644
--- a/test/log/0900
+++ b/test/log/0900
@@ -1,9 +1,9 @@
 
 ******** SERVER ********
 1999-03-02 09:44:33 exim x.yz daemon started: pid=pppp, no queue runs, listening for SMTP on port 1225
-1999-03-02 09:44:33 10HmaX-0005vi-00 <= someone@some.domain H=(tester) [127.0.0.1] P=esmtp K S=sss
-1999-03-02 09:44:33 10HmaY-0005vi-00 <= someone@some.domain H=(tester) [127.0.0.1] P=esmtp K S=sss
-1999-03-02 09:44:33 10HmaZ-0005vi-00 <= someone@some.domain H=(tester) [127.0.0.1] P=esmtp K S=sss
+1999-03-02 09:44:33 10HmaX-0005vi-00 <= someone@some.domain H=(tester) [127.0.0.1] P=esmtp K S=sss for CALLER@the.local.host.name
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= someone@some.domain H=(tester) [127.0.0.1] P=esmtp K S=sss for CALLER@the.local.host.name
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= someone@some.domain H=(tester) [127.0.0.1] P=esmtp K S=sss for CALLER@the.local.host.name
 1999-03-02 09:44:33 10HmbA-0005vi-00 SMTP data timeout (message abandoned) on connection from (tester) [127.0.0.1] F=<someone@some.domain>
 1999-03-02 09:44:33 SMTP connection from (tester) [127.0.0.1] lost while reading message data
 1999-03-02 09:44:33 SMTP connection from (tester) [127.0.0.1] lost while reading message data
diff --git a/test/log/0901 b/test/log/0901
index b2db284e3..58688cf28 100644
--- a/test/log/0901
+++ b/test/log/0901
@@ -1,38 +1,38 @@
-1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for a@test.ex
 1999-03-02 09:44:33 10HmaX-0005vi-00 => a@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK"
 1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
-1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for b@test.ex
 1999-03-02 09:44:33 10HmaY-0005vi-00 == b@test.ex R=to_server T=remote_smtp defer (dd): Connection timed out H=127.0.0.1 [127.0.0.1]: SMTP timeout after end of data (ddd bytes written)
-1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for c@test.ex
 1999-03-02 09:44:33 10HmaZ-0005vi-00 => c@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK"
 1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbA-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbA-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for d@test.ex
 1999-03-02 09:44:33 10HmbA-0005vi-00 ** d@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after end of data: 500 oops
 1999-03-02 09:44:33 10HmbA-0005vi-00 d@test.ex: error ignored
 1999-03-02 09:44:33 10HmbA-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbB-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbB-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for e@test.ex
 1999-03-02 09:44:33 10HmbB-0005vi-00 == e@test.ex R=to_server T=remote_smtp defer (-46) H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after end of data: 400 not right now
-1999-03-02 09:44:33 10HmbC-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbC-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for p@test.ex
 1999-03-02 09:44:33 10HmbC-0005vi-00 => p@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK bdat"
 1999-03-02 09:44:33 10HmbC-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbD-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbD-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for q@test.ex
 1999-03-02 09:44:33 10HmbD-0005vi-00 == q@test.ex R=to_server T=remote_smtp defer (dd): Connection timed out H=127.0.0.1 [127.0.0.1]: SMTP timeout after pipelined end of data (ddd bytes written)
-1999-03-02 09:44:33 10HmbE-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbE-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for r@test.ex
 1999-03-02 09:44:33 10HmbE-0005vi-00 => r@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK bdat"
 1999-03-02 09:44:33 10HmbE-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbF-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbF-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for s@test.ex
 1999-03-02 09:44:33 10HmbF-0005vi-00 ** s@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined end of data: 550 unacceptable mail-from
 1999-03-02 09:44:33 10HmbF-0005vi-00 s@test.ex: error ignored
 1999-03-02 09:44:33 10HmbF-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbG-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbG-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for s1@test.ex
 1999-03-02 09:44:33 10HmbG-0005vi-00 == s1@test.ex R=to_server T=remote_smtp defer (-45) H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined end of data: 450 greylisted mail-from
-1999-03-02 09:44:33 10HmbH-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbH-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for t@test.ex
 1999-03-02 09:44:33 10HmbH-0005vi-00 ** t@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after RCPT TO:<t@test.ex>: 550 no such recipient
 1999-03-02 09:44:33 10HmbH-0005vi-00 t@test.ex: error ignored
 1999-03-02 09:44:33 10HmbH-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbI-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbI-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for u@test.ex
 1999-03-02 09:44:33 10HmbI-0005vi-00 ** u@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined end of data: 500 oops bdat
 1999-03-02 09:44:33 10HmbI-0005vi-00 u@test.ex: error ignored
 1999-03-02 09:44:33 10HmbI-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbJ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbJ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for v@test.ex
 1999-03-02 09:44:33 10HmbJ-0005vi-00 == v@test.ex R=to_server T=remote_smtp defer (-46) H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined end of data: 400 not right now bdat
diff --git a/test/log/0902 b/test/log/0902
index 31fb49eb0..330b472bd 100644
--- a/test/log/0902
+++ b/test/log/0902
@@ -1,31 +1,31 @@
-1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for a@test.ex
 1999-03-02 09:44:33 10HmaX-0005vi-00 => a@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK bdat"
 1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
-1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for d@test.ex
 1999-03-02 09:44:33 10HmaY-0005vi-00 ** d@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after sending data block: 500 oops bdat-nonlast
 1999-03-02 09:44:33 10HmaY-0005vi-00 d@test.ex: error ignored
 1999-03-02 09:44:33 10HmaY-0005vi-00 Completed
-1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for p@test.ex
 1999-03-02 09:44:33 10HmaZ-0005vi-00 => p@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK bdat"
 1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbA-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbA-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for s@test.ex
 1999-03-02 09:44:33 10HmbA-0005vi-00 ** s@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined sending data block: 550 unacceptable mail-from
 1999-03-02 09:44:33 10HmbA-0005vi-00 s@test.ex: error ignored
 1999-03-02 09:44:33 10HmbA-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbB-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbB-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for t@test.ex
 1999-03-02 09:44:33 10HmbB-0005vi-00 ** t@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after RCPT TO:<t@test.ex>: 550 no such recipient
 1999-03-02 09:44:33 10HmbB-0005vi-00 t@test.ex: error ignored
 1999-03-02 09:44:33 10HmbB-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbC-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbC-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for t1@test.ex t2@test.ex
 1999-03-02 09:44:33 10HmbC-0005vi-00 ** t1@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after RCPT TO:<t1@test.ex>: 550 no such recipient
 1999-03-02 09:44:33 10HmbC-0005vi-00 => t2@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1] C="250 OK bdat"
 1999-03-02 09:44:33 10HmbC-0005vi-00 t1@test.ex: error ignored
 1999-03-02 09:44:33 10HmbC-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbD-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbD-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for u@test.ex
 1999-03-02 09:44:33 10HmbD-0005vi-00 ** u@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined sending data block: 500 oops nonlast bdat
 1999-03-02 09:44:33 10HmbD-0005vi-00 u@test.ex: error ignored
 1999-03-02 09:44:33 10HmbD-0005vi-00 Completed
-1999-03-02 09:44:33 10HmbE-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbE-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for v@test.ex
 1999-03-02 09:44:33 10HmbE-0005vi-00 ** v@test.ex R=to_server T=remote_smtp H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after end of data: 500 oops bdat
 1999-03-02 09:44:33 10HmbE-0005vi-00 v@test.ex: error ignored
 1999-03-02 09:44:33 10HmbE-0005vi-00 Completed
diff --git a/test/log/4509 b/test/log/4509
new file mode 100644
index 000000000..6e62c5219
--- /dev/null
+++ b/test/log/4509
@@ -0,0 +1,13 @@
+1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for a@test.ex
+1999-03-02 09:44:33 10HmaX-0005vi-00 => a@test.ex R=to_server T=remote_smtp_dkim H=127.0.0.1 [127.0.0.1] C="250- 973 byte chunk, total 973\\n250 OK id=10HmaY-0005vi-00"
+1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@the.local.host.name U=CALLER P=local S=sss for b@test.ex
+1999-03-02 09:44:33 10HmaZ-0005vi-00 => b@test.ex R=to_server T=remote_smtp_dkim H=127.0.0.1 [127.0.0.1] C="250- 8509 byte chunk, total 9160\\n250 OK id=10HmbA-0005vi-00"
+1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
+
+******** SERVER ********
+1999-03-02 09:44:33 exim x.yz daemon started: pid=pppp, no queue runs, listening for SMTP on port 1224
+1999-03-02 09:44:33 10HmaY-0005vi-00 DKIM: d=test.ex s=sel c=relaxed/relaxed a=rsa-sha256 b=1024 [verification succeeded]
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= <> H=localhost (the.local.host.name) [127.0.0.1] P=esmtp K S=sss id=E10HmaX-0005vi-00@the.local.host.name for a@test.ex
+1999-03-02 09:44:33 10HmbA-0005vi-00 DKIM: d=test.ex s=sel c=relaxed/relaxed a=rsa-sha256 b=1024 [verification succeeded]
+1999-03-02 09:44:33 10HmbA-0005vi-00 <= <> H=localhost (the.local.host.name) [127.0.0.1] P=esmtp K S=sss id=E10HmaZ-0005vi-00@the.local.host.name for b@test.ex
diff --git a/test/scripts/4500-Domain-Keys-Identified-Mail/4509 b/test/scripts/4500-Domain-Keys-Identified-Mail/4509
new file mode 100644
index 000000000..9e4790172
--- /dev/null
+++ b/test/scripts/4500-Domain-Keys-Identified-Mail/4509
@@ -0,0 +1,111 @@
+# DKIM signing, with CHUNKING
+#
+exim -bd -DSERVER=server -oX PORT_S
+****
+#
+# single header signed, short message
+exim -DX=dkim -DOPT=From -odf a@test.ex
+From: nobody@example.com
+From: second@example.com
+
+content
+****
+#
+# single header signed, long message
+exim -DX=dkim -DOPT=From -odf b@test.ex
+From: nobody@example.com
+From: second@example.com
+
+0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
+0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
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+
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+
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+
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+
+The very last line
+****
+millisleep 500
+killdaemon
+no_msglog_check