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Robert Kerr
Asked: 2011-07-28 19:53:53 +0800 CST

Email rejected for no rDNS by AOL despite having rDNS [duplicate]

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I am having trouble while attempting to send a single email to an aol.com user. I get a rejection reply as follows:

Your message did not reach some or all of the intended recipients.

   Sent: Wed, 27 Jul 2011 15:56:24 -0400
   Subject: Test

The following recipient(s) could not be reached:

[email protected]
   Error Type: SMTP
   Remote server (205.188.103.1) issued an error.
   hMailServer sent: 
   Remote server replied: 421 4.7.1 : (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html

Tried 9 time(s)



hMailServer

Troubleshooting using AOL's troubleshooting page, rDNS lookup results are:

RDNS Results

DNS Server Response:
www.scanhelper.com

And using NSLOOKUP myself ..

> 60.158.172.99.in-addr.arpa
Server:  homeportal
Address:  192.168.1.254

Non-authoritative answer:
60.158.172.99.in-addr.arpa      name = www.scanhelper.com

When using telnet,

C:\>telnet mailin-01.mx.aol.com 25
421 4.7.1 : (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html


Connection to host lost.

My hMailServer is set up correctly, is not an open relay, is not used for spam, is not on any blacklists, and so forth.

Any tips on getting AOL mail servers to accept mail? As far as I can tell, everything is being done correctly on my end.

email-server reverse-dns email-bounces

2 Answers

  1. While it kind of sucks, changing the reverse to match your MX may have more success than having it reverse to your website. Just the nature of the beast these days.

    Also, where is the server located, i.e. is it on a residential internet connection? Many of the larger ISP's are quite unkind to mail connections from blocks of IP's allocated to residential users.

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  2. It looks like your email server is announcing itself as "homeportal" while your rDNS is identifying itself as "www.scanhelper.com" based upon the information you provided. If that is the case, then that is a mismatch where you might consider changing your email server to announce itself as "www.scanhelper.com" to match up to the rDNS.

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