http://example1.com/    ==> https://example1.com/
http://www.example1.com/    ==> https://example1.com/
https://example1.com/   ==> https://example1.com/
https://www.example1.com/   ==> https://example1.com/

http://example2.com/    ==> https://example1.com/ (<== THIS ONE!)
http://www.example2.com/    ==> https://example2.com/
https://example2.com/   ==> https://example2.com/
https://www.example2.com/   ==> https://example2.com/

http://example3.us/ ==> https://example3.us/
http://www.example3.us/ ==> https://example3.us/
https://example3.us/    ==> https://example3.us/
https://www.example3.us/    ==> https://example3.us/

http://example4.com/    ==> https://example4.com/
http://www.example4.com/    ==> https://example4.com/
https://example4.com/   ==> https://example4.com/
https://www.example4.com/   ==> https://example4.com/

http://example2.com/    ==> https://example1.com/
http://example2.com/somepath    ==> https://example2.com/somepath

NameVirtualHost *:80
NameVirtualHost *:443
SSLStrictSNIVHostCheck off

<VirtualHost *:80>
  Serverexample www.example1.com
  ServerAlias example1.com *.example1.com
  Redirect permanent / https://example1.com/
</VirtualHost>

<VirtualHost *:443>
  Serverexample www.example1.com
  ServerAlias example1.com *.example1.com
  ProxyRequests off
  ProxyPreserveHost on
  CustomLog "/path/to/logs/example1ssl.log" "%h %l %u %t "%r" %>s %b"
  ErrorLog "/path/to/logs/example1ssl_error.log"
  SSLEngine on
  SSLProxyEngine on
  SSLCertificateFile /path/to/certs/example1.com.crt
  SSLCertificateKeyFile /path/to/private/example1.key
  SSLCertificateChainFile /path/to/certs/ca-bundle-example1.crt
  ProxyPass / http://example1.com:[internal port 1]/
  ProxyPassReverse / http://example1.com:[internal port 1]/
</VirtualHost>

<VirtualHost *:80>
  Serverexample www.example2.com
  ServerAlias example2.com *.example2.com
  Redirect permanent / https://example2.com/
</VirtualHost>

<VirtualHost *:443>
  Serverexample www.example2.com
  ServerAlias example2.com *.example2.com
  SSLEngine on
  SSLProxyEngine on
  CustomLog "/path/to/logs/example2_ssl.log" "%h %l %u %t "%r" %>s %b"
  ErrorLog "/path/to/logs/example2_ssl_error.log"
  SSLCertificateFile /path/to/certs/web-01.example2.com.crt
  SSLCertificateKeyFile /path/to/private/example2.com.key
  SSLCertificateChainFile /path/to/certs/example2.com.crt
  ProxyPreserveHost On
  ProxyRequests off
  ProxyPass / http://example2.com:[internal port 3]/
  ProxyPassReverse / http://example2.com:[internal port 3]/
</VirtualHost>

<VirtualHost *:80>
  Serverexample www.example3.us
  ServerAlias example3.us *.example3.us
  Redirect permanent / https://example3.us/
</VirtualHost>

<VirtualHost *:443>
  Serverexample www.example3.us
  ServerAlias example3.us *.example3.us
  ProxyRequests off
  ProxyPreserveHost on
  CustomLog "/path/to/logs/example3ssl.log" "%h %l %u %t "%r" %>s %b"
  ErrorLog "/path/to/logs/example3ssl_error.log"
  SSLEngine on
  SSLProxyEngine on
  SSLCertificateFile /path/to/certs/example3.us.crt
  SSLCertificateKeyFile /path/to/private/example3.key
  SSLCertificateChainFile /path/to/certs/auth_bundle-example3.crt
  ProxyPass / http://example3.us:[internal port 2]/
  ProxyPassReverse / http://example3.us:[internal port 2]/
</VirtualHost>



<VirtualHost *:80>
  Serverexample www.example4.com
  ServerAlias example4.com *.example4.com
  Redirect permanent / https://example4.com/
</VirtualHost>

<VirtualHost *:443>
  Serverexample www.example4.com
  ServerAlias example4.com *.example4.com
  ProxyRequests off
  ProxyPreserveHost on
  CustomLog "/path/to/logs/example4ssl.log" "%h %l %u %t "%r" %>s %b"
  ErrorLog "/path/to/logs/example4ssl_error.log"
  SSLEngine on
  SSLProxyEngine on
  SSLCertificateFile /path/to/certs/example4.com.crt
  SSLCertificateKeyFile /path/to/private/example4.key
  SSLCertificateChainFile /path/to/certs/ca-bundle-example4.crt
  ProxyPass / http://example4.com:[internal port 4]/
  ProxyPassReverse / http://example4.com:[internal port 4]/
</VirtualHost>

VirtualHost configuration:

    *:80                   is a NameVirtualHost
             default server www.example1.com (/etc/httpd/conf.d/virtualhosts.conf:12)
             port 80 namevhost www.example1.com (/etc/httpd/conf.d/virtualhosts.conf:12)
                     alias example1.com
                     wild alias *.example1.com
             port 80 namevhost www.example2.com (/etc/httpd/conf.d/virtualhosts.conf:36)
                     alias example2.com
                     wild alias *.example2.com
             port 80 namevhost www.example3.us (/etc/httpd/conf.d/virtualhosts.conf:84)
                     alias example3.us
                     wild alias *.example3.us
             port 80 namevhost www.example4.com (/etc/httpd/conf.d/virtualhosts.conf:108)
                     alias example4.com
                     wild alias *.example4.com
    *:443                  is a NameVirtualHost
             default server www.example1.com (/etc/httpd/conf.d/virtualhosts.conf:19)
             port 443 namevhost www.example1.com (/etc/httpd/conf.d/virtualhosts.conf:19)
                     alias example1.com
                     wild alias *.example1.com
             port 443 namevhost www.example2.com (/etc/httpd/conf.d/virtualhosts.conf:43)
                     alias example2.com
                     wild alias *.example2.com
             port 443 namevhost www.example3.us (/etc/httpd/conf.d/virtualhosts.conf:90)
                     alias example3.us
                     wild alias *.example3.us
             port 443 namevhost www.example4.com (/etc/httpd/conf.d/virtualhosts.conf:114)
                     alias example4.com
                     wild alias *.example4.com