diff --git a/library/Zend/Mail/Transport/Sendmail.php b/library/Zend/Mail/Transport/Sendmail.php
index d5d607cf972..fbe8583fd01 100644
--- a/library/Zend/Mail/Transport/Sendmail.php
+++ b/library/Zend/Mail/Transport/Sendmail.php
@@ -127,6 +127,15 @@ public function send(Mail\Message $message)
         $headers = $this->prepareHeaders($message);
         $params  = $this->prepareParameters($message);
 
+        // On *nix platforms, we need to replace \r\n with \n
+        // sendmail is not an SMTP server, it is a unix command - it expects LF
+        if (!$this->isWindowsOs()) {
+            $to      = str_replace("\r\n", "\n", $to);
+            $subject = str_replace("\r\n", "\n", $subject);
+            $body    = str_replace("\r\n", "\n", $body);
+            $headers = str_replace("\r\n", "\n", $headers);
+        }
+
         call_user_func($this->callable, $to, $subject, $body, $headers, $params);
     }
 
diff --git a/tests/ZendTest/Mail/Transport/SendmailTest.php b/tests/ZendTest/Mail/Transport/SendmailTest.php
index 9cde9ca59ef..0b6eebd048d 100644
--- a/tests/ZendTest/Mail/Transport/SendmailTest.php
+++ b/tests/ZendTest/Mail/Transport/SendmailTest.php
@@ -83,12 +83,12 @@ public function testReceivesMailArtifactsOnUnixSystems()
         $this->assertEquals('ZF DevTeam <zf-devteam@zend.com>', $this->to);
         $this->assertEquals('Testing Zend\Mail\Transport\Sendmail', $this->subject);
         $this->assertEquals('This is only a test.', trim($this->message));
-        $this->assertNotContains("To: ZF DevTeam <zf-devteam@zend.com>\r\n", $this->additional_headers);
-        $this->assertContains("Cc: matthew@zend.com\r\n", $this->additional_headers);
-        $this->assertContains("Bcc: \"CR-Team, ZF Project\" <zf-crteam@lists.zend.com>\r\n", $this->additional_headers);
-        $this->assertContains("From: zf-devteam@zend.com,\r\n Matthew <matthew@zend.com>\r\n", $this->additional_headers);
-        $this->assertContains("X-Foo-Bar: Matthew\r\n", $this->additional_headers);
-        $this->assertContains("Sender: Ralph Schindler <ralph.schindler@zend.com>\r\n", $this->additional_headers);
+        $this->assertNotContains("To: ZF DevTeam <zf-devteam@zend.com>\n", $this->additional_headers);
+        $this->assertContains("Cc: matthew@zend.com\n", $this->additional_headers);
+        $this->assertContains("Bcc: \"CR-Team, ZF Project\" <zf-crteam@lists.zend.com>\n", $this->additional_headers);
+        $this->assertContains("From: zf-devteam@zend.com,\n Matthew <matthew@zend.com>\n", $this->additional_headers);
+        $this->assertContains("X-Foo-Bar: Matthew\n", $this->additional_headers);
+        $this->assertContains("Sender: Ralph Schindler <ralph.schindler@zend.com>\n", $this->additional_headers);
         $this->assertEquals('-R hdrs -f ralph.schindler@zend.com', $this->additional_parameters);
     }