On Mon, 26 May 2003 09:22:28 -0300 (BRT) Alan Wilter Sousa da Silva <[EMAIL PROTECTED]> wrote:
> How can I verify if I have a misconfigured DNS? > I mean, how can I know that I won't have e-mail reject for a such > mechanism suggest by Pierre? Looking at your post's headers... > Received: from iracema.biof.ufrj.br (iracema.biof.ufrj.br > [146.164.76.162]) 1:^^^^^^^^^^^^^^^^^^^^ 2:^^^^^^^^^^^^^^^^^^^^ > by chagas.biof.ufrj.br (8.12.9/8.12.9) with ESMTP id > h4QCQ8kh009901 for <[EMAIL PROTECTED]>; Mon, 26 May 2003 > 09:26:08 -0300 This initial header shows that your server claimed to be 1 and rDNS got 2 from your IP address... so both pieces match which is good. Conversely, the same initial Received header for missing rDNS should look like this: > Received: from iracema.biof.ufrj.br (unknown [146.164.76.162]) If 1 and 2 don't match, then my mailer also tries to resolve 1 (the name you configured in your mailer). In this case, both must pass the test... Moral of the story: make sure your rDNS is correct and your mailer sends a known-to-DNS name in the HELO/EHLO packet, or your mail may be rejected... HTH
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