Hostname does not match certificate

Hi,

I get these errors on any FTP client:

Hostname does not match certificate
Certificate expired!

In the info it says it expired 2 days ago, how to I renew that certificate? which certificate it is? It does not matter what I use as FTP server: site IP, site URL or server hostname, the same issue persists.

Solved it following this: https://www.howtoforge.com/tutorial/pureftpd-tls-on-centos/

@ricardofh said:

Solved it following this: https://www.howtoforge.com/tutorial/pureftpd-tls-on-centos/

+1
Thanks!

What did you do to fix this. Was is install OpenSSL?