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RCPT from unknown[]: 450 4.7.1 Client host rejected: cannot find ...

  1. https://serverfault.com
  2. questions
  3. reject-rcpt-from-unk...
  1. https://serverfault.com
  2. questions
  3. reject-rcpt-from-unk...

2022/8/28 -As far as I can tell, the error message is "reverse hostname" related. I am outside my normal hostname. But Thunderbird should log in and still ...


450 4.7.1 Client host rejected: cannot find your hostname - Plesk Support

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  2. en-us
  3. articles
  4. 1237714009...
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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 order ...


450 4.7.1 Client host rejected: cannot find your hostname - Plesk Forum

  1. https://talk.plesk.com
  2. ...
  3. Plesk Onyx for Linux
  1. https://talk.plesk.com
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  3. Plesk Onyx for Linux

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.


[Solved] Postfix: Client host rejected: cannot find your hostname

  1. https://bbs.archlinux.org
  2. Newbie Corner
  1. https://bbs.archlinux.org
  2. Newbie Corner

2018/8/22 -I'm running the setup in a systemd-nspawn container. the postfix/main.cf: ## ## Network settings ## mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/ ...


Client host rejected: cannot find your hostname - cPanel Support

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  2. en-us
  3. articles
  4. 3600631122...
  1. https://support.cpanel.net
  2. en-us
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2021/2/16 -Description. Checks against the hostname are needed to ensure that the hostname is properly resolving to the server. Here are the commands ...


Client host rejected: cannot find your hostname - Google Groups

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  2. uFAPkhxlDiI
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Hi,. I'm using zimbra with Postfix as MTA. I got the following error message which indicate mail rejection based on hostname not find.


Outlook SMTP Send Mail Problem : Client host rejected: cannot find ...

  1. https://forum.centos-webpanel.com
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2020/8/10 -Client host rejected: cannot find your hostname i did rebuild mail server, restarting All mail services and Update ClamAV.. rebooting server and ...


450 4.7.1 Client host rejected: cannot find your reverse hostname #2282

  1. https://github.com
  2. mailcow
  3. mailcow-dockerized
  4. issues
  1. https://github.com
  2. mailcow
  3. mailcow-dockerized
  4. issues

2019/2/8 -The above example would reflect the following error: NOQUEUE: reject: RCPT from unknown[200.30.40.50]: 450 4.7.1 Client host rejected: cannot ...


450 4.7.25 Client host rejected: Cannot find your hostname (Page 1)

  1. https://forum.iredmail.org
  2. topic19773-450-4725-client-...
  1. https://forum.iredmail.org
  2. topic19773-450-4725-client-...

2023/5/15 -- Deployed with iRedMail Easy or the downloadable installer? - Linux/BSD distribution name and version: Ubuntu 18.04 - Store mail accounts in ...


[SOLVED] - 450 4.7.25 Client host rejected: cannot find your hostname

  1. https://forum.proxmox.com
  2. threads
  3. 450-4-7-25-client...
  1. https://forum.proxmox.com
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  3. 450-4-7-25-client...

2018/9/26 -Unknown clients are hostnames not matching or existing (FCrDNS) of the sending mailserver, unknown senders checks, if the domain of the sender ...