How Can I Verify My Dedicated Server Architecture
Jan 14, 2009
if there was a way of remotely verifying my dedicated server architecture.
The hosting is done through our design company who then use a 3rd party for hosting a number of sites, and as such I don't have direct access to server control panels etc.
Short of just taking their word for the fact that we have the servers we're supposed to, I was wondering if there's any way I can be sure. We're supposed to have dual web servers plus a database server.
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Nov 17, 2008
I own a social network generating over 50 million page views a month. Currently, I use only one massive server. I want to add in a new server just for image serving, as my current server is killing me with high bandwidth costs.
Server A runs the website and the logic
Server B runs runs the images
What would be a good architecture between the two servers, given that they ARE NOT IN THE SAME hosting infrastructure (SoftLayer is not a great option if you want alot of bandwidth)
If a user changes his photo on Server A which runs the site, somehow Server B must be notified and gets a hold of the new image..... what would be the most technically feasible and optimum way to achieve this?
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Apr 11, 2008
I have a little problem on definition of three-tier architecture...
On a short explanation, what is a Three-Tier Architecture?
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May 28, 2007
we have 5 Rack with about 110 servers and 200mbit of connection, every rack use 1 cisco catalyst 2950 without any hw firewall (we use iptables) now we want organize all with a cisco pix 535 firewall and a traffic shaping solution, what do u think of this configuration?
Ethernet connection from datacenter
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1 Gigabit swith with the 200mbit connection
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2 Cisco Pix 535 in fail over
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Traffic shaping server
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switch1 switch2 switch3 switch4 switch5
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Jun 17, 2015
We are facing an issue i.e "Can't verify server identity",When we hit the platform 'teampark.sogeti.com' from android mobile application.Whenever we hit teampark.sogeti.com from Mobile Application ( IBM connections android App), our initial request will hit our Reverse Proxy and Validates the user certificate and forward it to the next level.We are using Apache 2.2.9 as our Reverse Proxy.
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Feb 29, 2008
how I can verify that my mail server is configured properly?
This is the problem:
I can send out mail without a problem, but I cannot receive mail from external domains (eg: google or hotmail).
Some of the message have weird bounce backs like:
PERM_FAILURE: SMTP Error (state 13): 550 No Such User Here
But the user does exist... I am logged into it right now.
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Apr 11, 2008
I am planning for an architecture for the cluster of shared hosting servers. I intend to run around 10000 websites initially on Linux as well as Windows servers. I am planning for a load balanced setup and failover cluster with SAN or a similar storage solution where all the data will be stored. I am looking for suggestions on the best possible architecture which can accomodate all the above things. Also I need to know what are the best options available for load balancers and clusters.
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Aug 27, 2007
I have a virtuozoo VPS and I want to know whether I actually have the 384 MB RAM I have been promised. how do I verify my guarenteed ram figure?
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Jan 30, 2009
please bear w/ me since this is my first time on launching a site online..
My site is being hosted by a free hosting company..
When I tried viewing the source code of my page some of the html tags are not seen like the <html>,<meta>,<head>...
and I can't seem to verify my site on google...
Verification status: NOT VERIFIED
Last attempt Jan 30, 2009: We've detected that your 404 (file not found) error page returns a status of 200 (Success) in the header.
why is this so?
Did the host delete those?
what should i do?
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Oct 30, 2009
We had a non-client (not on our server) that was getting 550 email rejections when he attempted to email us due to having Sender Verify enabled.
In the past I figured Sender Verify was necessary for fighting spam, amongst other things, but have realized that we may be having more rejections than we know because we never hear about them.
Is there a general best practice in terms of enabling Sender Verify or leaving it off? I've never heard about complaints about rejects from legitimate emails senders, so it doesn't seem to be an issue, but then again, you really never know...
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Oct 26, 2009
I have a Debian server with RAID 1 via hardware.
Could someone tell me how can i check the RAID status? ( if a hd failed or something like this ).
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Apr 3, 2008
I had a server admin install a new drive in RAID 1 (mirrored drives). I'm not the best linux guy in the world... but is there a way either through linux, WHM/cPanel, etc. to check and verify that the drives are mirroring correctly? I just want to sleep soundly everynight knowing if a drive failed I'd have another drive up and going.
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Apr 6, 2008
I have a domain: myname.com
whose nameservers have been already update to the new host's nameservers: ns1.myhost.com and ns2.myhost.com
The new NS for the domain was already propagated over 1 day ago.
However, it seems that myname.com is not yet resolving at myhost.
How can I check whether myname.com is on ns1.myhost.com nameservers?
I have yet no shell access, and it is shared hosting.
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Jan 6, 2007
!verify = helo
!verify = reverse_host_lookup
in exim acl and drop message if helo is not passed.
But one issue is this validates for users even having account in the server and trying to send mail using server account to someone else
I want to put validation for only incoming mails "to" this server
What i dont want is to validate the mails that authenticated smtp users send
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Jan 17, 2007
I´m seeing that a lot of servers are rejecting my emails showing this error:
451 - could not verify sender (callout)
Reverse DNS is working fine, and I couldnt see any kind of error on dnsstuff.com.
I´m using EXIM/CPANEL. I tried to send from one cpanel server to another cpanel server and I´m still getting error.
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Feb 22, 2009
This is just to recommend verifying your 404 error pages. We have found they have been replaced by junk advertising.
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Jan 4, 2008
in the last couple of days we really have problem accessing web service, while ftp, ssh, work fine. While we getting connection time out, the load on the server is really load around .2 and get numerous e-mail from Cpanel that httpd is failling and try to restart.
How can i do to check and verify that there a DDOS attack?
What step can i do to possibly minimize DDOS attack?
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Aug 14, 2007
I recently purchased a new Dedi server, and got 100 MBPS Uplink. Now, I'm uploading 16GB size of files into this server, and I have a suspicious feeling that this upload speed is not what they told me. For the very 1st day, I opened a ticket and they said that they upgraded it to 100 mbps. I saw this speed was faster immediately. On 2nd day, it went down to around same slow speed before. Since then, I kept opening a new ticket and they said it was done, or sometimes I am under DDos attack..? What? I don't even have the site up yet! How come there is DDos attack?
Anyway, today I was told that I'm getting billed for this 100 mbps uplink, because it's a new service. What a crazy thing going on here... I am so tired of this ticket game and just don't understand why they don't commit what they told me initially.
Can anyone please tell me how I can verify and prove that I am having this 100 MBPS Uplink speed? The only thing I can tell with my eyes is that I can see those FTP upload progress bar. When it's very fast to upload one file, I assume that I have right speed.
But is there any tool or command that I can execute on the server shell, and tell them what I get as a proof?
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Dec 18, 2012
If you enable ssl in apache, you can verify a client certificate. If so apache will create a environment variable for you with the name 'SSL_CLIENT_VERIFY' with values 'NONE, SUCCESS, GENEROUS or FAILED:reason'. URL....What is the meaning of this different values?
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Nov 23, 2007
I have this customer who have been having trouble to receive some emails from valid senders due to Sender verify failed, both senders have valid accounts.
Here is an example,
De: MDaemon at zeus.XServer.com [mailto:MDaemon@zeus.XServer.com]
Enviado el: sábado, 17 de noviembre de 2007 11:16 a.m.
Para: albertocarbone@XServer.com
Asunto: Error permanente de entrega
Failed address: jsoler@CustomerDomain.com
--- Session Transcript ---
Sat 2007-11-17 11:15:19: Parsing message
[xxxxxxxxxxxxxxxxxxxxxxxxpd35000148823.msg]
Sat 2007-11-17 11:15:19: * From: albertocarbone@XServer.com
Sat 2007-11-17 11:15:19: * To: jsoler@CustomerDomain.com
Sat 2007-11-17 11:15:19: * Subject: RE: Zona Franca.- Concepto.-
Sat 2007-11-17 11:15:19: * Message-ID:
[003201c82934$ba953d00$2fbfb700$@com]
Sat 2007-11-17 11:15:19: Intentando SMTP conexión con [CustomerDomain.com]
Sat 2007-11-17 11:15:19: Resolviendo registros MX para [ CustomerDomain.com]
(Servidor DNS: 200.118.2.66)...
Sat 2007-11-17 11:15:23: * P=000 S=000 D=CustomerDomain.com TTL=(240)
MX=[ CustomerDomain.com] {xx.xxx.13.172}
Sat 2007-11-17 11:15:23: Intentando SMTP conexión con [xx.xxx.13.172:25]
Sat 2007-11-17 11:15:23: Esperando la conexión del socket...
Sat 2007-11-17 11:15:23: * Conexión establecida (xx.yyy.51.30:3948 -]
xx.xxx.13.172:25)
Sat 2007-11-17 11:15:23: Esperando la iniciación del protocolo...
Sat 2007-11-17 11:15:25: [-- 220-svr01.customerDomainHost.com ESMTP Exim 4.68 #1
Sat, 17 Nov 2007 11:15:29 -0500
Sat 2007-11-17 11:15:25: [-- 220-We do not authorize the use of this system
to transport unsolicited,
Sat 2007-11-17 11:15:25: [-- 220 and/or bulk e-mail.
Sat 2007-11-17 11:15:25: --] EHLO zeus.XServer.com
Sat 2007-11-17 11:15:25: [-- 250-svr01.customerDomainHost.com Hello zeus.XServer.com
[xx.yyy.51.30]
Sat 2007-11-17 11:15:25: [-- 250-SIZE 52428800
Sat 2007-11-17 11:15:25: [-- 250-PIPELINING
Sat 2007-11-17 11:15:25: [-- 250-AUTH PLAIN LOGIN
Sat 2007-11-17 11:15:25: [-- 250-STARTTLS
Sat 2007-11-17 11:15:25: [-- 250 HELP
Sat 2007-11-17 11:15:25: --] STARTTLS
Sat 2007-11-17 11:15:26: [-- 220 TLS go ahead
Sat 2007-11-17 11:15:26: SSL negotiation successful (TLS 1.0, 1024 bit key
exchange, 128 bit RC4 encryption)
Sat 2007-11-17 11:15:26: --] EHLO zeus.XServer.com
Sat 2007-11-17 11:15:26: [-- 250-svr01.customerDomainHost.com Hello zeus.XServer.com
[xx.yyy.51.30]
Sat 2007-11-17 11:15:26: [-- 250-SIZE 52428800
Sat 2007-11-17 11:15:26: [-- 250-PIPELINING
Sat 2007-11-17 11:15:26: [-- 250-AUTH PLAIN LOGIN
Sat 2007-11-17 11:15:26: [-- 250 HELP
Sat 2007-11-17 11:15:26: --] MAIL From:[ albertocarbone@XServer.com
[mailto:albertocarbone@XServer.com] ]
SIZE=23231
Sat 2007-11-17 11:15:26: [-- 250 OK
Sat 2007-11-17 11:15:26: --] RCPT To:[jsoler@CustomerDomain.com]
Sat 2007-11-17 11:15:30: [-- 550-Verification failed for
[albertocarbone@XServer.com]
Sat 2007-11-17 11:15:30: [-- 550-Called: 82.165.181.92
Sat 2007-11-17 11:15:30: [-- 550-Sent: RCPT
TO:[albertocarbone@XServer.com]
Sat 2007-11-17 11:15:30: [-- 550-Response: 550 Backscatter Protection
detected an invalid or expired email address
Sat 2007-11-17 11:15:30: [-- 550 Sender verify failed
Sat 2007-11-17 11:15:30: --] QUIT
--- End Transcript ---
Here is another example
2007-11-19 11:50:19 H=dom21.ipowerweb.com [72.22.92.57] sender verify fail for [hguzman@hoftxxx.net]
2007-11-19 11:50:19 H=dom21.ipowerweb.com [72.22.92.57] F=[hguzman@hoftxxx.net] rejected RCPT [jsoler@CustomerDomain.com]: Sender verify failed
Both accounts are valid.
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Oct 11, 2007
in the last few months Ive got a blacklist warning from spamcop over my server sending bounces and now I find out one of my ips is listed at [url]for doing sender verify and bounces.
I think both of which are ridiculous to blacklist for and I really think most of the anti-spam blacklist people are nothing more then money making rackets. But I guess it seems reasonable to disable these things as it would save some resources.
Anyway what I need to do I guess is only do bounces for local users and disable sender verify. What is the best way to do this with exim?
Every server I have to change is cpanel. Ive googled on this the last 2 days and cant find much info, Mailservers isnt my strong point for sure. Any advice Id appreciate.
UPDATE I found how to disable callouts [url]
Just trying to figure out how to disable bounces now
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Jul 16, 2008
My .htaccess file redirects (rewrites) all .html to .php... I need to add Google's file in order to verify my account (Webmaster Tools) but it can't find the file because of my .htaccess.
Code :
Options +FollowSymlinks
RewriteEngine on
rewritecond %{http_host} ^mydomain.com [nc]
rewriterule ^(.*)$ http://www.mydomain.com/$1 [r=301,nc]
rewritecond %{http_host} ^/index.html [nc]
rewriterule ^(.*)$ http://www.mydomain.com/$1 [r=301,nc]
RewriteRule ^(.*).html$ $1.php [NC]
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Nov 1, 2014
How to can I verify if gzip is enable? And if not, how can I active/install mod deflate/gzip under plesk 12?
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Oct 1, 2014
Is it possible to verify client certificate based on username?If possible, How can we implement it in our httpd-ssl.conf file.
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