EQ Admin

EQ Forum Admin
Staff member

Have you ever seen this error in your qmail-send logs?


This can mean that someone you are trying to send e-mail to has violated the DNS protocol and is sending oversize DNS responses to your server.

There are three solutions that can help with this problem.

  1. Install a djbdns DNS Resolver on your qmail server.
  2. Install the Big DNS patch for qmail.
  3. Ask the entity responding with oversize DNS results to fix their DNS.