yon
>..you need to change the file called httpd.conf and ssl.conf in
> etc/httpd/conf.d and in etc/httpd/conf you need to change every 443...
If you edited the conf files directly, then the next time you reconfigure your server and/or change settings in server manager etc, you will loose all those settings in the conf files. They will be reset to default values as per the original templates.
To correctly and permanently change those settings on an sme server, you need to create custom templates, edit those templates and then expand the templates, which will result in your required values being put into the conf files, and they will survive reconfiguration.
Read the Developers Handbook, see Documentation link on left & there have also been plenty of examples posted in these forums (search on templates-custom) and in various howtos. Read some of them for further info.