diff --git a/interface/web/mail/mail_transport_edit.php b/interface/web/mail/mail_transport_edit.php
index d9ce8e856e41acaa827d9eeab5d154920c3313ba..295cfb2e9c562dd13a537d95acaf4b2cdcb7ac1f 100644
--- a/interface/web/mail/mail_transport_edit.php
+++ b/interface/web/mail/mail_transport_edit.php
@@ -82,7 +82,7 @@ class page_action extends tform_actions {
 		}
 		if(!empty($tmp_parts[2])) {
 			$dest = @$tmp_parts[1].':'.@$tmp_parts[2];
-		} elseif(!empty($tmp_parts[1])) {
+		} elseif(!empty($tmp_parts[1]) || $this->dataRecord["transport"] == ":") {
 			$dest = $tmp_parts[1];
 		} else {
 			$dest = $this->dataRecord["transport"];