Reject addresses without a hostname.

diff --git a/clients/lib/pobox.c b/clients/lib/pobox.c
index 9d715d8cc457a6add71d3c2f39473f0eba1113b6..873900fa7aee54e7d73684c8e54307ff67c8104c 100644 (file)
--- a/clients/lib/pobox.c
+++ b/clients/lib/pobox.c
@@ -56,7 +56,17 @@ int mrcl_validate_pobox_smtp(char *user, char *address, char **ret)
          goto cleanup;
        }
 
-      machine = canonicalize_hostname(strdup(m));
+      if (strlen(m) > 0)
+       {
+         machine = canonicalize_hostname(strdup(m));
+       }
+      else
+       {
+         com_err(whoami, 0, "No hostname in address \"%s\".", address);
+         status = MRCL_REJECT;
+         goto cleanup;
+       }
+      
       switch (potype(machine))
        {
        case POTYPE_POP: