How to restore hostname for server?

[7rdoq]

Today,

I made some small settings with /etc/hosts & /etc/sysconfig/network for sending emails

I really I didn't make some changes, but now all sites on server can not access, but sentora panel is okay

May you help me with this? How to restore hostname to resolve the sites?

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seems now I can not ping to all sites in server, only ping to sentora panel

mydomain.com’s server DNS address could not be found

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https://intodns.com/prescriptz.com shows too many errors about DNS & NS although I didnt change, may you help me?

[Me.B]

What did you change??

Did you modify postfix config?

M B

[TGates]

Looks like you sorted it out? The site seems to be loading fine for me.

[7rdoq]

yes, I really dont know, I'm downloading backups to re-install but suddenly it goes lives again

I didn't change any postfix; I only yum install sendmail-cf then remove it; during this, I do not touch any postfix settings; only /etc/hosts & /etc/sysconfig/network

I'm transferring domain that hosts sentora panel to new registrar, this could be reason?

[TGates]

I'm transferring domain that hosts sentora panel to new registrar, this could be reason?

Yes, that could be the problem! Wait until all your changes are done and wait 12-24 hours for propagation.