diff --git a/htdocs/core/class/CMailFile.class.php b/htdocs/core/class/CMailFile.class.php
index 809cf15edbf..853f2f98b05 100644
--- a/htdocs/core/class/CMailFile.class.php
+++ b/htdocs/core/class/CMailFile.class.php
@@ -176,7 +176,7 @@ class CMailFile
 		if (empty($msg))
 		{
 		    dol_syslog("CMailFile::CMailfile: Try to send an email with empty body");
-		    $msg='.';     // Avoid empty message (with empty message conten show a multipart structure)
+		    $msg = '.'; // Avoid empty message (with empty message content, you will see a multipart structure)
 		}
 
 		// Detect if message is HTML (use fast method)
@@ -198,7 +198,7 @@ class CMailFile
 		//$urlwithroot=DOL_MAIN_URL_ROOT;					// This is to use same domain name than current
 
 		// Replace relative /viewimage to absolute path
-		$msg = preg_replace('/src="'.preg_quote(DOL_URL_ROOT, '/').'\/viewimage\.php/ims', 'src="'.$urlwithroot.'/viewimage.php', $msg, -1, $nbrep);
+		$msg = preg_replace('/src="'.preg_quote(DOL_URL_ROOT, '/').'\/viewimage\.php/ims', 'src="'.$urlwithroot.'/viewimage.php', $msg, -1);
 
 		if (! empty($conf->global->MAIN_MAIL_FORCE_CONTENT_TYPE_TO_HTML)) $this->msgishtml=1; // To force to send everything with content type html.
 
@@ -330,6 +330,9 @@ class CMailFile
 				$msg = $this->checkIfHTML($msg);
 			}
 
+			// Replace . alone on a new line with .. to avoid to have SMTP interpret this as end of message
+			$msg = preg_replace('/(\r|\n)\.(\r|\n)/ims', '\1..\2', $msg);
+
 			if ($this->msgishtml) $smtps->setBodyContent($msg, 'html');
 			else $smtps->setBodyContent($msg, 'plain');