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 ...

2023/12/1 -I have another issue that bugs me from time to time: When using webmail from some receivers I get a bounce with: 550 5.7.25 Client host rejected: cannot ...

2023/5/15 -I know this error was answered/fix already here in the forum but it seems that the above fix doesn't solve my issue.

2023/8/2 -Symptoms. Mails are not sent to a specific address. The following messages can be found in the /var/log/maillog file: Reason: Remote SMTP Server Returned: ...

2023/12/31 -Hi. What the problem and how to fix ? My custom template: PTR is correct: UPD: My PTR record was not correct.

2023/11/28 -450 4.7.1 Client host rejected: cannot find your reverse hostname. i am receiving this error message and i have already set up my dns records properly.

2023/8/7 -25 Client host rejected: cannot find your hostname, [91.199.28.25]; from=<support@portmone.com>... When I do nslookup on the same machine, I get: nslookup ...

2023/7/1 -Greetings from Zoho Mail. We would like to acknowledge that the email was rejected since one of our IP is currently listed on public blacklists.

2024/2/23 -Although I think my saslauth is fairly secure, I would prefer if they couldn't even try. Is there no way to get the "unknown" hostname to be rejected earlier?

2023/12/22 -log file shows the following: Client host rejected: cannot find your reverse hostname I'm not receiving the mail either. I followed all of your steps, but ...