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POHow can I set up reverse DNS on my Ruby on Rails website?
 

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  1. POHow can I set up reverse DNS on my Ruby on Rails website?
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    <p>Thanks in advance for any help you can provide with this issue!</p> <p>For my website, users are supposed to receive an activation email after registering. Some emails are not being received, and they're not going to spam filter folders, either. </p> <p>After reviewing my integral_mailer log, I think I've uncovered the problem. Systems seem to be rejecting the messages because there is no reverse DNS information.</p> <ul> <li>Here is what Comcast had to say in reply to a rejected message: <a href="http://postmaster.comcast.net/smtp-error-codes.php#554" rel="nofollow noreferrer">http://postmaster.comcast.net/smtp-error-codes.php#554</a>)</li> <li>Here is what AOL had to say: <a href="http://postmaster.aol.com/Postmaster.Errors.php#421dnsnr" rel="nofollow noreferrer">http://postmaster.aol.com/Postmaster.Errors.php#421dnsnr</a></li> <li>I checked this article but couldn't set up my own reverse DNS: <a href="https://stackoverflow.com/questions/621601/setting-up-reverse-dns-records">Setting up Reverse DNS Records</a></li> </ul> <p>I'm somewhat of a novice with RoR. Can you guide me in setting up the required reverse DNS information for my mailer?</p> <p>As background, here are details from user_mailer.rb:</p> <pre><code>class UserMailer &lt; ActionMailer::Base def signup_notification(user) setup_email(user) @subject += 'Please activate your new account' @body[:url] = "http://website.com/activate/#{user.activation_code}" end </code></pre> <p>From integral_mailer.rb:</p> <pre><code>module IntegralMailer def perform_delivery_integral_mailer(mail) destinations = mail.destinations mail.ready_to_send helo = smtp_settings[:helo] || "localhost.localdomain" ActionMailer::Base::INTEGRAL_MAILER_SERVER.send_mail(helo, mail.from, destinations, mail.encoded) end end </code></pre>
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    1. COHow are you hosting this site? Shared hosting provider, dedicated hosting provider, or on your own machine at home?
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      1. POHow can I set up reverse DNS on my Ruby on Rails website?
      1. USErik Nedwidek
    2. COThe DNS stuff has nothing at all to do with RoR. Contact your web hosting provider for DNS help.
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      1. POHow can I set up reverse DNS on my Ruby on Rails website?
      1. USDave S.
    3. COThanks, guys. I really appreciate your responses. I was on the phone with the domain host for a half-hour before being directed to the web host, Joyent. Then, I found this article [http://am1-wiki.joyent.us/display/smart/Host+Names,+IP+Addresses,+Zone+Names,+and+Reverse+Records] I sent in a support request as required for establishing the reverse DNS. Will let you know the results! FYI, the link I shared keeps adding a final bracket to the URL.
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