회사 메일 수신이 되다 안되다 합니다...

Question

아웃룩계정으로 회사 도메인 등록하여 5개 메일을 사용하고 있습니다.

근데 지금 메일이 전체적으로 들어오는건 들어오고, 안들어 오는건 안들어옵니다...

아예 안들어오면 모르겠는데 와중에 또 들어오는건 들어오고요..

메일 정리도 해봤는데 여전합니다.

다른 사이트 계정으로 메일을 보내봤을 때, 메일 1, 2, 3이 있으면 1은 안들어가는데 2는 들어가는 이런식으로 사람 환장하게 만드네요..

안들어오는 이메일들의 공통적인 규칙도 따로 없는거 같고요..

다른 회사 측에서도 에러로 메일이 안들어가진다고도 연락이 와서 문의 남깁니다.

Answer 1

Hi, Eco Powertech

Thanks for your detailed sharing.

It looks that you've added two MX records, would you please remove this at local domain provider side first. 

Then let's see if it works or not.

Thanks for your understanding and cooperation.

Merry Christmas.

Answer 2

I appreciate it. Thanks to this, I have noticed that there is an error in the MX record.

But when I checked the Gavia homepage and the part where the DNS is registered, I couldn't see what was different.

If MS ******* this number is wrong, where can I find something to correct it?

And the name server of the domain was registered as Gavia and another server.

We have taken measures to delete other servers so that only Gavia can be registered.

Answer 3

Hi, Eco Powertech

Good day!

Thanks for posting into our community and we're glad to assist you.

According to your description, the error code NDR 550 5.4.4 typically indicates that the recipient's email server is rejecting the connection from your email server. This can happen for several reasons, including issues with spam filters, incorrect DNS settings, or problems with the recipient's email server.

First of all, would you please allow us to know whether you're using the Office 365 for business subscription or not?

If so, would you please ask your administrator to check below:

1. Check DNS Settings: Ensure that your DNS settings are correctly configured. Incorrect DNS settings can cause email delivery issues. You can use tools like theMicrosoft Remote Connectivity Analyzerto test your DNS configuration.
2. Review Spam Filters: Make sure that your emails are not being blocked by spam filters. Sometimes, legitimate emails can be mistakenly marked as spam and rejected.
3. Verify Email Server Configuration: Double-check your email server settings to ensure they are correctly configured. This includes checking your SPF, DKIM, and DMARC records.
4. Contact the Recipient's Email Admin: If possible, contact the email administrator of the recipient's domain. They might be able to provide more information about why your emails are being rejected.

If you're facing any issues from the above, for saving your time, it is best for you to ask your administrator contact Microsoft Online Tech Support team directly - 지원 받기 - Microsoft 365 admin | Microsoft Learn. Unlike our forum team, Microsoft Online Tech Support team can check on the backend for you and provide you a solution through the remote.

Note: Please be kindly to understand for our forum team that don't have the authority to access the backend. Thanks for your precious time and your understanding would be highly appreciated.

Merry Christmas and wish you have a great holiday.

Hope you all the best!