https://bugs.gentoo.org/611142

--- a/qmail-remote.c	2019-10-29 22:46:27.076000000 +0100
+++ b/qmail-remote.c	2019-10-29 22:48:18.868000000 +0100
@@ -556,6 +556,7 @@ void checkutf8message()
     if (r == 0) break;
     if (r == -1) temp_read();
 
+    if (ch == '\n' && !stralloc_cats(&firstpart,"\r")) temp_nomem();
     if (!stralloc_append(&firstpart,&ch)) temp_nomem();
 
     if (ch == '\r')