sendmail 451 Name server timeout

In : linux, system, Posted by on Oct.10, 2008

This is something related to sendmail IPv6 support.

  1. cd /etc/mail
  2. sendmail.mc and add the following at the end of the file:
  3. define(`confBIND_OPTS’, `WorkAroundBrokenAAAA’)dnl
  4. type make
  5. restart sendmail
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