Domains & Sub Domains not working...

[Nautic]

Hi, bit of an issue here and I have searched and can't find a solution.

I have transferred a website from the original server (CentOS / DA) to the new server (CentOS / DA). Overall it is working, however periodically throughout the day the domain stops working, or the sub domain stops working. This will be like this for about 2 or 3 minutes then it starts working again. All other websites on the server are fine, just the one I have transferred over is doing this.

Any suggestions as to where I should be looking first as this is quite an issue. I brought the other websites over in the same method of creating a backup and restoring it on the new server, and no problems.

You can see here that the forum loads, which runs under the main domain. However the advertising which is served from a sub-domain does not load. Then a few minutes later it is all working again properly.



Some help as to where I should be looking for these issues would be great, I checked the DNS and IP settings in DA and it all looked fine.

Regards,

Joel

 

[Nautic]

I have looked at my /var/named/extremekites.com.au.db

$TTL 14400
@ IN SOA ns1.extremekites.com.au root.extremekites.com.au. (
2009101300
14400
3600
1209600
86400 )

extremekites.com.au. 14400 IN NS ns1.extremekites.com.au
extremekites.com.au. 14400 IN NS ns2.extremekites.com.au

ads 14400 IN A 119.31.231.120
adv 14400 IN A 119.31.231.120
dev 14400 IN A 119.31.231.120
extremekites.com.au. 14400 IN A 119.31.231.120
ftp 14400 IN A 119.31.231.120
localhost 14400 IN A 127.0.0.1
mail 14400 IN A 119.31.231.120
ns1 14400 IN A 119.31.231.121
ns2 14400 IN A 119.31.231.122
pop 14400 IN A 119.31.231.120
smtp 14400 IN A 119.31.231.120
staff 14400 IN A 119.31.231.120
subtest 14400 IN A 119.31.231.120
webdev 14400 IN A 119.31.231.120
www 14400 IN A 119.31.231.120
www.ads 14400 IN A 119.31.231.120
www.adv 14400 IN A 119.31.231.120
www.dev 14400 IN A 119.31.231.120
www.staff 14400 IN A 119.31.231.120
www.subtest 14400 IN A 119.31.231.120
www.webdev 14400 IN A 119.31.231.120

extremekites.com.au. 14400 IN MX 10 mail

extremekites.com.au. 14400 IN TXT "v=spf1 a mx ip4:119.31.231.114 ~all"

It all looks correct, .114 is the main server ip. .120 is assigned as a reseller, .121 and .122 are the name servers. Yet even now trying to access adv.extremekites.com.au it does not load. Same with the dev sub domain. It will be working again in a few minutes, then it goes away again.

Regards,

Joel

 

[nobaloney]

Do you get any kind of error, or does everything just hang? If www hangs, does a connecdtion to the mail server also hang?

When you try to ping the domain name, does it work? Does it return the right IP#?

Jeff

 

[Nautic]

Hi Jeff,

First off thank you for trying to help me diagnose this, I have answered as best I can below so far:

Ping
I can not ping the url, however I can ping it via the assigned IP address.

Subdomain
When the subdomains are not working the website itself does continue to operate.

Hanging
Browsing the subdomains hang, whilst visiting the main website continues to operate normally. I can still fetch my mail even whilst the subdomains are not working. It doesn't give me an error other than in the screenshot above, I looked in the apache log files and there's nothing there either, doesn't even register a request to the sub domain.

Regards,

Joel

 

[Nautic]

Hi Jeff,

I took a close eye to it the last few hours, the whole main domain stopped working however I could still access my email via pop.

All other sites were working fine, just this one stops working.

Regards,

Joel

 

[Nautic]

Well I removed the account altogether, then recreated it and manually copied the files over from the backup. My guess is when restoring the backup for some reason there may be old DNS entries, however no matter where I looked I could not find anything that looked out of place or different.

It is all working at the *moment*.

I'll report back in 48 hours.

Regards,

Joel