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Question

RSA server certificate CommonName (CN) `www.domain.com' does NOT match server name!?

  • Posted August 27, 2013

Hi, My droplet conists of Apache, on centos with virtualmin . Today I updated virtualmin and started getting this error “RSA server certificate CommonName (CN) `www.domain.com’ does NOT match server name!” in Apache error logs, I googled it but did not found any suitable answer. Any pointers would be of great help to me.

Thanks

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ken30021 • October 1, 2014

I had this this error after following the instructions in this document: How To Set Up Apache with a Free Signed SSL Certificate on a VPS

I solved it by adding “ServerName www.mydomainname.com” inside of the VirtualHost as follows:

ServerName www.mydomainname.com
SSLEngine on
SSLProtocol all -SSLv2
SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM
SSLCertificateFile /etc/apache2/ssl/ssl.crt
SSLCertificateKeyFile /etc/apache2/ssl/private.key
SSLCertificateChainFile /etc/apache2/ssl/sub.class1.server.ca.pem
```...

Please note I assume you can also put the ServerName record in <VirtualHost *.80>.
Please see the above link for details.
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Kamal Nasser • August 28, 2013

How did you create the SSL cert? You have to put your domain name you’re going to use the SSL cert on in the CN field. If it’s a self-signed certificate, you should just create a new SSL cert.

hypertextsol • August 30, 2013

:) ha ha. @kamal & @Pablo

pablo • August 29, 2013

<b>“Now rebooted the system and there is no error.”</b> <br> <br>You’d be surprised how many people waste time troubleshooting an issue, only to realize that the simple task of a reboot was all that was needed. It’s happened to me countless times!

Kamal Nasser • August 29, 2013

Glad to hear it’s fixed :]

hypertextsol • August 28, 2013

Thanks for your reply @Pablo & @kamal. but there is no error now. I just cannot understand why? <br>Earlier I was not getting this error, but after updating virtualmin I started getting this error. <br> <br>By the way SSL is a paid SSL certificate from Godaddy. <br>Now rebooted the system and there is no error. <br> <br>Thanks for all your help.

pablo • August 28, 2013

Execute <code>hostname -f</code> to see if your droplet’s FQDN matches what’s in the certificate.

hypertextsol • August 28, 2013

Do you want to know the domain name or the droplet name @Pablo

pablo • August 28, 2013

what’s your server’s name?

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