strange Addon Domains problem

I hope this is in the right spot. I am desperate for help. First allow me to set up some facts.

I run a PHPBB3 Forum.

my host has Cpanel 11.24.4-RELEASE installed for me to use.

I have a main domain www.mydomain.com/forum_subdir

I am using an Addon Domain to run the forum. The forum lives in the forum_subdir.

The address of the forum is www.myforumaddress.com

all phpbb3 cookies are set to use www.myforumaddress.com

OK for the most part this set up is working well. Heres the problem.
randomly different people will not be able to reach www.myforumaddress.com for about an hour or so. I haven't had the problem and many other people haven't had the problem but everyday someone new does seem to have this problem. no matter what they do the site is just gone or server unrecognizable. They search for the site in google and when a link comes up they click it and still nothing. These same people still seem to be able to reach www.mydomain.com/forum_subdir if they type this in directly but of course this is no good because it doesn't have the right cookie information and they can't log into the phpbb3 forum. ... help please! This problem is frustrating many of my best forum users.

thanks in advance.

 

the domain registrar is godaddy. I have it set at godaddy to point the myforumaddress.com address to my host server where mydomain.com resides.

 

users who normally access the site just fine suddenly are unable to find the site for only a matter of a few hours. it does not take days for their access to be reinstated. Suddenly for them it's like myforumaddress.com doesn't exsist. These same users while having no access to myforumaddress.com seem to be able to access www.mydomain.com/forum_subdir directly. This is why I believe something is going on with the addon domain.

of course I don't know if every user who is blocked from myforumaddress.com can access www.mydomain.com/forum_subdir but I do know random users for a few hours at a time are losing all access to www.forumaddress.com

the addon domain isn't working for everyone all of the time. it's only working sometimes.

 

no the problem doesn't happen to everyone at the same time. There will be a random person at different times having the problem. It's not always the same person though. I have no idea which ISP these people are using but it is happening to different people who are all in different locations around the globe so it's doubtful that the ISP is the same. I know for a fact a Colorado, California, Tenn, and Canadian person all experienced the same problem at different times.
So strange !!!

 

thanks I will check into it. I am sending this info to my host.

 

Do you think you can tell me what you make of this ?

http://www.intodns.com/lovethesecurves.com

 

sent to me by one of my users.

 

Thanks! This is beyond the scope of what I am able to do in part because of my noob status, well probably entirely because of my noob status. Whats a CNAME ? I really don't know where to start. any tips..
thanks so much.

 

well my host helped. all of the red errors at the link offered are now green.
However the problem still exists. It finally happened to me.
Here is what I discovered. The website was not available at www.forumaddress.com but http://forumaddress.com was available. It's like the "WWW" was not working.

any ideas ?

 

I'm sorry I thought it was clear from everything I wrote but I should have been more specific. I registered the name over 2 months ago and I set the DNS servers about that time. I used the cpanel add domain about 3 weeks ago. This problem shouldn't exsist. The link offered in this thread clearly shows that the WWW has indeed propagated.
thanks for your help..


Does anyone know what is going wrong ?