20 Host Or Domain Name Not Found Name Service Error For In This Year

Check the address and try again.

Host or domain name not found name service error for. You need to make sure the a records for your domain are properly set for your server postfix server. The e mail system was unable to deliver the message but did not report a specific reason. Yes please go ahead and delete those now just to be safe.

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. 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. Just by adding the host name in the hosts file and sending mail abc host dom will not work.

My ip dot addr should resolve to vps mydomain co uk or whatever name you have chosen for your server postfix server. When i email one of my clinets i get the following error any thoughts on this. But that is the core of what has to be cleaned up.

A simple postfix reload fixed the problem. The mx record for the domain host must be resolve able. It happened to me once after etc resolv conf change that postfix somehow get stuck.

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.