Having trouble sending mail to AOL? Getting "CNAME lookup failed temporarily" errors? AOL has done the unthinkable -- increased their DNS records beyond 512 bytes. Many Unix programs, qmail included, can only use DNS records <512 bytes. You can fix this (for qmail anyway). Once you download qmail-103.patch, switch into the qmail source directory, and issue the command patch <qmail-103.patch. And then stop qmail, make setup, and restart qmail.