Yahoo! JAPAN

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 ...

2022/1/27 -The server rejects emails sent from one of these domains. '450 4.7.1 Client host rejected: cannot find your reverse hostname'; If the ...

2013/11/8 -450 4.7.1 Client host rejected: cannot find your hostname. I'm certain that they are using reverse DNS and can not resolve back to my ...

2017/11/26 -1 Client host rejected: cannot find your reverse hostname is encountered. We strongly advise contacting your recipient's email provider to check ...

Cause. Incorrect or missing PTR record of the sender's mail server. Resolution. Contact the server hoster or provider of the IP address in ...

2014/12/23 -1 Answer 1 ... You need a PTR record that resolves 128.199.39.109 to the hostname of your sending server. Might also want to look into SPF records ...

2021/8/9 -450 4.1.1 <recipient@remotedomain.com>: Recipient address rejected: unverified address: Address verification in progress</recipient@remotedomain ...

2018/5/8 -The error suggests the destination server is unable to lookup a PTR record for the IP it is receiving the connection from. You may want to ...

Messages (Email, SMS, etc.) being transferred via SMTP are failing with error message XS609 - Currently no delivery to RECIPIENT EMAILADDRESS , as recipient ...

2021/2/16 -1 . Check the hostname resolves from a workstation other than the server: · 2 . Make sure the IP from the above command is bound to the server by ...