unixadmin Posted September 5, 2016 Share Posted September 5, 2016 Hello. While waiting for my e-mail confirmation link I noticed mail you were sending out is being rejected because ds.netduma.com has no DNS pointer. This is not mandatory as you know but it will cause the majority of mail servers on the Internet to reject your mail as spam. postfix reject: RCPT from unknown[64.237.36.66]: 450 4.1.8 <netduma\@ds.netduma.com>: Sender address rejected: Domain not found; proto=ESMTP helo=<ds.netduma.com> $ dig ds.netduma.com ;ds.netduma.com. IN A Link to comment Share on other sites More sharing options...
Administrators Netduma Fraser Posted September 6, 2016 Administrators Share Posted September 6, 2016 Hey, welcome to the forum! I will pass this on to the web devs to get this sorted, thanks for letting us know Link to comment Share on other sites More sharing options...
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