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WebPanel => E-Mail => Topic started by: andylau123 on February 05, 2025, 02:58:49 AM

Title: 550 No such recipient here
Post by: andylau123 on February 05, 2025, 02:58:49 AM
Hi
everyone, I want to ask that when my mail server sends email to Yahoo, Outlook, Gmail, it can send without being Spam or Blacklisted.
But when I send email from Gmail, Yahoo, Outlook to my mail server, it shows the error as below.
Is anyone having the same problem as me?
------------------------------------
Your message wasn't delivered to hide@hide.com because the address couldn't be found, or is unable to receive mail.
The response from the remote server was:
550 No such recipient here
Title: Re: 550 No such recipient here
Post by: farhan on February 05, 2025, 05:32:59 AM
Quote from: andylau123 on February 05, 2025, 02:58:49 AM
Hi
everyone, I want to ask that when my mail server sends email to Yahoo, Outlook, Gmail, it can send without being Spam or Blacklisted.
But when I send email from Gmail, Yahoo, Outlook to my mail server, it shows the error as below.
Is anyone having the same problem as me?
------------------------------------
Your message wasn't delivered to hide@hide.com because the address couldn't be found, or is unable to receive mail.
The response from the remote server was:
550 No such recipient here

https://forum.centos-webpanel.com/e-mail/can-t-receive-emails/

Is this related to your problem? I have ever faced that problem too long time ago, cannot receive incoming email. The problem is the port.
Title: Re: 550 No such recipient here
Post by: Starburst on February 05, 2025, 02:00:11 PM
The 550 error 99% of the time means the mailbox and or mail server hasn't been setup.

If you get bounces that say connection failure, then that would be the port.


Could you please advise of the following:

What 'errors' and/or 'messages' are being displayed in the logs for Postfix and Dovecot?

What distro are you are you running CWP on?

CWP Free or CWPpro?

Public or NAT?
Title: Re: 550 No such recipient here
Post by: cyberspace on February 06, 2025, 04:57:53 PM
It could be caused by a wrong MX record. Make sure your domain name uses correct nameservers and they point incoming emails to your server (MX record look at your server).

If the MX record is ok then check other things mentioned by Starburst. However, start from investigating the MX record.
Title: Re: 550 No such recipient here
Post by: andylau123 on February 07, 2025, 12:53:46 AM
Quote from: cyberspace on February 06, 2025, 04:57:53 PM
It could be caused by a wrong MX record. Make sure your domain name uses correct nameservers and they point incoming emails to your server (MX record look at your server).

If the MX record is ok then check other things mentioned by Starburst. However, start from investigating the MX record.

Thanks everyone for your support.
Thank you for your help, I checked MX and the error is gone.