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2020/7/6 -Might be the recipient server block your domain or its associated IP address, through some spam filters or firewall.
2025/3/4 -Resolution. Contact the server provider of the IP address in order to correct PTR record and make it point to the mail server hostname. For ...
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 ...
2018/8/22 -Re: [Solved] Postfix: Client host rejected: cannot find your hostname. One thing. Look at my master.cf all processes are running in a chroot.
2013/11/22 -Check the DNS settings on the outbound mailserver. Make sure you alse have a PTR record set up for the hostname that is send with the EHLO/HELO ...
2020/10/14 -Our e-mails are getting queued, because "450 3.7.1 Client host rejected: cannot find you hostname, [...] (in reply to RCPT to command)"
2020/4/14 -This specific error seems to have something to do with the PTR record for the server. How do i fix this problem.
2021/2/16 -Checks against the hostname are needed to ensure that the hostname is properly resolving to the server. Here are the commands needed to perform this check.
2022/11/21 -Resolution. Try the following methods to troubleshoot: Ask the sender to check the mapping between the hostname and IP address in DNS records.
1. Verify rDNS Record: Senders should check if their SMTP server's IP address has a corresponding and correct rDNS record. 2. Correcting rDNS Records: If ...