Krydos Posted January 18, 2018 Posted January 18, 2018 No, that means reverse DNS isn't set up for 66.220.18.188. A lot of mail servers refuse emails from IPs that don't have reverse DNS. Give me a few minutes.
Krydos Posted January 18, 2018 Posted January 18, 2018 Reverse DNS should now be set up, but it can take a while to start working. The length of time it takes depends on how quickly DNS records update throughout the world. Let us know if it still isn't working after 24 hours.
IndustryUs Posted January 20, 2018 Posted January 20, 2018 Hey, guys, I'm still getting a reverse dns issue: host smtp.glb.shawcable.net [64.59.136.136] SMTP error from remote mail server after initial connection: 554 mi06.dcs.int.inet cmsmtp Connection rejected. Reverse DNS for 66.220.18.188 does not exist. Of course, let me know if there's anything you need me to do on this end. Thanks for all your help.
Krydos Posted January 20, 2018 Posted January 20, 2018 I forgot that Hurricane Electric delegates reverse DNS with a CNAME. I didn't have the syntax exactly right. Looks like it should be good now https://www.debouncer.com/reverse-dns-check?ip=66.220.18.188 As usual with DNS it could take up to 24 hours for everyone to register the change and for the old cache to clear itself. Thanks for letting me know that it wasn't working yet.
IndustryUs Posted January 20, 2018 Posted January 20, 2018 Beauty. Thanks for the help, guys. I'll keep a watch.
icgit2 Posted January 22, 2018 Posted January 22, 2018 No, that means reverse DNS isn't set up for 66.220.18.188. A lot of mail servers refuse emails from IPs that don't have reverse DNS. Give me a few minutes. I am having the exact same issue: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [66.220.18.189] Can you fix this problem for my account? Thanks.
Krydos Posted January 22, 2018 Posted January 22, 2018 There you go https://www.debouncer.com/reverse-dns-check?ip=66.220.18.189
HelioHost Posted January 22, 2018 Author Posted January 22, 2018 Thanks, again. Looks good. -----Original Message-----
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