--- inn1.4unoff4/lib/getfqdn.c.dist	Thu Mar 18 22:04:35 1993
+++ inn1.4unoff4/lib/getfqdn.c	Tue Jun 11 20:07:48 1996
@@ -31,6 +31,13 @@
     if (strchr(buff, '.') != NULL)
 	return buff;
 
+    /* Try getdomainname. */
+    if (getdomainname(temp, (int)sizeof temp) == 0) {
+      (void)strcat(buff, ".");
+      (void)strcat(buff,temp);
+      return buff;
+    }
+
     /* See if DNS (or /etc/hosts) gives us a full domain name. */
     if ((hp = gethostbyname(buff)) == NULL)
 	return NULL;