20 Host Or Domain Name Not Found Name Service Error For Nam Update

With a host not found try again it could mean that your server is having dns resolution issues or postfix itself is having dns resolution issues.

Host or domain name not found name service error for nam. As for how to clear it up your question doesn t provide enough details on your base os or setup to give a succinct answer. I had a problem sending an email to a local address. For further assistance please send mail to postmaster if you do so please include this problem report.

However you can ask your service provider to give you an smtp server to which you can do a smart host transfer if you are trying to send mails locally internally to systems. The mx record for the domain host must be resolve able. I m sorry to have to inform you that your message could not be delivered to one or more recipients.

You can delete your own text from the attached returned message. When i email one of my clinets i get the following error any thoughts on this. The e mail system was unable to deliver the message but did not report a specific reason.

Just by adding the host name in the hosts file and sending mail abc host dom will not work. Host or domain name not found. Have you successfully sent mail to other systems from this.

Boosting a couple questions mentioned in comments that might help figure out what s going on. The dns server isn t required to have or to hand out localhost definitions. No servers could be reached so i change my dns server to 8 8 8 8 using nmtui command and reboot my server.

I m finding quite a few of these types of messages in my postfix log. Check the address and try again. But that is the core of what has to be cleaned up.