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2024/4/18 -Cause. Incorrect or missing PTR record of the sender's mail server. Resolution. Contact the server hoster or provider of the IP address in ...
2018/12/23 -Error when receiving a message. The error message 'Client host rejected: cannot find your hostname' is displayed to the sender if his provider ...
2021/2/16 -Description · 1 . Check the hostname resolves from a workstation other than the server: · 2 . Make sure the IP from the above command is bound ...
2019/6/4 -You postfix configuration has reject_unknown_client_hostname which rejects mails because 28.90.9.96.sinet.com.kh. doesn't resolve back to ...
THE PROBLEM. The mail server's source IP address which is trying to send mail to parabon.com does not have proper reverse DNS entries setup or the DNS ...
2013/11/8 -When a user here sends an email to a particular domain it bounces back with: 450 4.7.1 Client host rejected: cannot find your hostname. I'm ...
2020/10/14 -I configured an A entry in our DNS manager for our domain. But it seems that the configuration of the datacenter's resolution is getting ...
2018/8/22 -It sounds like your nameserver is not providing your postfix server with the result of: unbound-host 212.227.17.21 21.17.227.212.in ...
2017/5/18 -Hello. I am having a big issue with this. I am using Plesk Onyx Version 17.5.3 Update #6 Web Host Edition on Ubuntu 14.04.5 LTS.
2020/7/6 -25 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.130]};{FQDN=};{IP=}]'. I am getting this error message only when the user sends ...
Q.メールを送信し、5日後の今日になって 件名「Undelivered Mail Returned to Sender」というメールが「MAILER-DAEMON@mail.自分のドメイン」から届き...
A.くみちゃんさんのおっしゃっていることに補足ですが、送信元の IP アドレスに対して適切な DNS レコードが設定されていないことが原因のように思われます。 cannot find your h...