New subdomain generates 'too many redirects' error message

[elR]

Hello kind souls. =)

After reading the Apache docs describing the ServerAlias directive, I'm still having trouble understanding how it functions. I've got a WordPress Network (Multisite) setup that requires I add ' ServerAlias "*.domain.tld" ' to the /var/www/vhosts/domain.tld/conf/vhost.conf file. This works fine.

However, I just created a new subdomain via the plesk control panel, which placed a directory for it here: /var/www/vhosts/domain.tld/(subdomain) - and in /var/www/vhosts/domain.tld/subdomains/(subdomain) - and attempting to visit subdomain.domain.tld in my browser generates a 'too many redirects' error.

My question is:
Is the ' ServerAlias "*.domain.tld" ' causing this problem, or am I missing a step somewhere in getting the subdomain to load in the browser?

UPDATE:
Here's the httpd.conf content auto-generated by Plesk:
http://pastebin.com/gzJ9TChq

 

[Amin Taheri]

do you have an .htaccess file that is doing any redirects?

 

[elR]

Hi Amin - thanks for the reply!
All I have as far as .htaccess goes is a basic WordPress .htaccess file in the /var/www/vhosts/domain.tld/httpdocs directory: http://pastebin.com/fLaTEDMT

There's likely some other sorcery going on with WordPress that lets it manage subdomains that it manages, but I don't imagine that it would interfere with another subdomain not in its list...

Perhaps you know better?

 

[Amin Taheri]

Just to rule it out can you rename the file or comment out the lines in it and then re-test? Worst case no change but at least we can rule it out.