What would be the best way to replicate two exchange servers across a WAN? I would like to run exchange but in two different physical locations for redundancy and backup purposes, to ensure if one goes down, the other is right there. Is there any good commercial solutions?
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We are currently configuring two machines to act as primary / secondary name servers.
Both machines are server 2003 Standard Editions, obviously based in seperate locations.
I would like to replicate all primary zones as secondary zones on the second server.
However If a machine dies I dont want to have to re-add every zone manually - I would rather point the machine at the other one and have it pull back information for all zones that machine is authorative for.
Is there a way to do this on server 2003 DNS or not?
I am trying to achieve mysql replication between server1 and server2 with help from [url]
However, I have problem connecting server1 and server2 to perform the replication. The error that I receive during the first time replication on server2 is as below:-
mysql> LOAD DATA FROM MASTER;
ERROR 1218 (08S01): Error connecting to master: Access denied for user 'slave_user'@'server2' (using password: YES
However, I am able to connect from server2 to server 1 with:-
mysql -h server1 -u slave_user -p
I have followed the exact guides but still could not get it to work.
I don't know much about MySQL replication at all but am trying to present a few different options to a client of mine.
They run a large eCommerce site with a very active database. For several reasons, they are considering having their site mirrored across two completely different dedicated hosting providers.
The question here is, is it also possible to replicate the MySQL database in real-time across external servers and if/how secure it is.
Essentially, if one DC becomes inactive they'd like to fall-back on the other. An even more ideal solution would be to split traffic across the two... but not sure if that's even possible, perhaps with DNS?
I'm working for a client who has an e-commerce site currently hosted on a shared hosting solution.
He is now looking for 100% uptime (as near as), so I have suggested that we get 2 VPS and use DNS monitoring to switch servers as required (from DNSmadeEasy).
This is all fine, and the websites files/images do not change often, so I can use rsync every so often to sync these. Not a problem.
What does change frequently is the mySQL db for the site.
I've been looking at MySQL replication, but this seems to be no good. If one server goes down, then the other one takes over, they don't automatically sync themselves after they come back up. It seems MySQL cluster is best, but this needs 3 servers and they all need to be on the same LAN.
I've read you can set MySQL replication to MASTER-MASTER so that it acts like a cluster, and resyncs itself as required.
I had configured mysql replication for one of my client. Now the replication is stopped and slave server is not updating the data. How can I resolve this and start the replication again?
View 7 Replies View Relatedif you have MySQL replication setup, and DNS failover switches over to the MySQL Slave server in case of an outage...
Is that gonna work? Will the Slave suddenly just work as a regular non-slave DB?
Then when the primary server comes back up, how do I sync my changes back to the master db?
Some of you may have read my previous posts about a dual server configuration I am currently working with. I run a high traffic forum which has up to 2-3k of people online at once. I was wondering if it could be effective to setup MySQL Replication of certain tables which are read very frequently and then modifying the script to grab data from the slave server rather than the master? For say viewing threads, forums etc. Information which isn't updated literally every second.
A few questions...
-Will this place a lot of load on the master having to write the data to the slave as well? As in would the load I save on SELECT queries be used on writing to the slave anyway?
-Could this actually be effective?
I'm not too experienced with this, so I'm hoping someone more enlightened here can help.
Scenario:
I'm trying to build a social network site geared towards old people. I'm using LAMP environment. I want to have 1 mysql master (writes) and 2 mysql slaves (reads). Two web servers will read from the 2 mysql slaves and write to the one mysql master.
Questions:
My concern is this: when a user posts a comment via the webserver, the comment is written to the mysql master. I would like for him/her to see the comment he posted right away so they don't think something failed or went wrong. I'm afraid that replication to the mysql slaves will take some time to sync all of the mysql databases together. How can I work around this? Or am I mistaken and this doesn't actually happen?
How fast is replication? How can I mitigate this delay in replication to show the user instant results of their submission.
The same thing can apply to uploading photos to a user's profile.
I'm trying to find a low cost solution for realtime file share replication in a windows environment.
It doesn't look like there are any open source windows cluster filesystems around, so the only viable option I found would be running OpenFiler in a replication cluster on Hyper-V nodes. Has anyone worked with this, does it work reliably?
The required IO throughput on these shares would really be minimal and my biggest concern is 100% availability.
what can make site load faster other than replication
(well lets assume that design wise it is ok and doesnt content heavy contents...)
i have heard that increasing networking speed at the server level can make site much faster...
is it true..?
is there any tweak bandwidth wise...
suppose we get 1tb bandwidth per month compared to 100gb ...
will that make site faster...
we want to host a photogalley site...which is fast or images are shown in faster way....
I never did replication and do not know much about it so I figured I would ask here if anyone knows or has done it before like this.
I have a user who wants me to enable replication on my server for his user. I dont like the sounds of it on a shared environment but if there is no risk to other users and its not a big resource hog I will do it. Anyway, from what I gather I have to:
1. execute:
GRANT REPLICATION SLAVE ON user_main.* TO 'repl'@'ip-here' IDENTIFIED BY '4T6WjUZa';
[url]
2. Stop mysql server and Add in my.cnf:
[mysqld]
log-bin=mysql-bin
server-id=1
slave-compressed=1
binlog-do-db=user_main
start server[url]
3. execute:
SHOW MASTER STATUS;
we need values of colomns File and Position from output of above command[url]
So my questions are:
Is there any security risk?
Is there significant extra resource usage?
Is this even done on shared environments?
I have fairly a large web site that has a forum and a torrent tracker.
Currently MySQL server is handling about 150 queries an avarage per second.
Here is the server spec:
Core2Duo 2.66Ghz
4Gb RAM
320GB SATA 7200RPM (Server provider does not have 1.5K RPM nor 1.0k RPM)
100Mbit Connection (servers on the same switch and the switch does not have 1Gbit port)
MySQL Version: 5.0.51a
I had Master-Master Replication setup with forum running on one and the tracker running on the other.
Although this has been working for about few days, we started seeing lags in the replication process.
After a week, there is a major lag and the changes made on one of the servers takes about 5 hours to appear on the another.
So, this doesn't work.
What would be the other ways of splitting MySQL queries concerning the same database?
While I was researching, I read about MySQL Cluster with database storage engine being NDB.
But, let's say that there is a power failure on both the nodes at the same time, then I would lose the whole database as the database is stored on the memory correct?
I would not like to take that chance either, but if this is faster then replication method then maybe I will concider.
I thought about editing the forum coding to make all queries that concerns the tracker to go in to, say server B (with forum's primary MySQL server being Server A), and make the tracker use server B as MySQL backend, but it seemed like a heavy work so that will be the last choice.
Hello, we have a few web servers that run Windows 2003 Server and IIS for web page hosting. We develop custom applications and don't do "web hosting" per se.
What is the best way to do this in a load balanced environment? We have a Cisco load balancer out in front of these servers, but I'm curious about the following:
1) Is there a way to replicate IIS entries instead of having to configure the site on each server?
2) How does everyone handle file replication (hopefully in real time) across all servers?
Can anyone recommend me Good companies to use Hosted Exchange.
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I WILL be install WS2003 EE R2 on a dedicated server.
However, I will make this into a DC/AD so I can install Exchange and serve the system as a Webserver. All that's fine
But the question during the creation of an DC props up.
I have 2 domains. I will also have 2 dedicated IP's.
Now, lets say I have domains www.aaa.com and www.bbb.com
1) Would I Install and configure DNS on this server? Remember, this is a dedicated server located in a datacenter somewhere with their infrastructure in place.
2) Would I need to configure anything in the LAN settings? Should I just leave everything to automatically detect IP and DNS Servers? (No other computer will be joining this domain)
anything else I should be aware of?
ok, now I have those domain names, I would need to update the DNS Records from the web hoster right? So I would need to update the NS records (The place I purchased the domain from)
Exchange
Now, since I will be creating several user accounts here, these user accounts will be for email addresses.
1) Is it possible to have 2 domains on this 1 exchange server? I'm guessing not? (I dont have knowledge about exchange)
2) What about configuring an exchange server? How would I say create an email address like "abc@aaa.com"? So this email account would then be able to send/recieve email?
Just today we started having some problems with our exchange server...everything was working fine until around 10:00 A.M this morning.
We've started getting sporadic reject messages from people that we have always been able to email in the past.
These are a few of the NDR's we've received.
There was a SMTP communication problem with the recipient's email server.
Please contact your system administrator.
<mail.uaminc.com #5.5.0 smtp;550 not local host baronintl.com, not a gateway>
The following recipient(s) could not be reached:
Spot Marketing on 1/11/2008 12:39 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<mail.uaminc.com #5.7.1 smtp;550 5.7.1 Unable to relay for **@spotaviation.com" ******@spotaviation.com>
The following recipient(s) could not be reached:
*****@Tracercorp.com" ***@Tracercorp.com on 1/11/2008 9:24 AM
There was a SMTP communication problem with the recipient's email server.
Please contact your system administrator.
<mail.uaminc.com #5.5.0 smtp;530 authentication required for relay (#5.7.1)>
Theres more as well, but that pretty much sums up the main issues really....as I said, these were working fine for the last year, until today. No changes have been made on our exchange server.
We have GFI Mail essentials installed with SPF records turned on.
We have reverse dns setup through Time Warner Telecom for our IP.
I can send email to my hotmail address, but yahoo rejects it.
I've checked dnsstuff.com and dnsreport.com and we're not on any blacklists.
I'm not exactly sure where else to look.
These mail servers rejecting our email are not from just 1 ISP or 1 mail server, these are from companies in different states/countries.
I have exchange 2003 installed but also want to use POP3. Is this possible?
If so, how can I create the POP3 email accounts? How do I configure them?
I currently host exchange 2003 and we are in the process of building up an exchange 2007 solution. Anybody have any links or whitepapers on the setup? I am stumbling on some permission issues - particluarly with the address lists - with the new exchange server roles.
View 14 Replies View RelatedAs DNP have just released their new HE integration we are interested to find out what the demand is like for HE.
Can you also let me know what the average setup costs and any links to white label solutions?
I've seen various companies offering Microsoft Exchange hosting but I'm not sure if this is what I need to go with or not. Let me explain what I'm wanting to do and maybe someone can give me a yay or nay on it. I have a desktop and a laptop running Outlook that I would like to be able to sync together with a web-based server. I also have a Treo 750 cell phone that I want to have my calendar and tasks synced as well with the web-based server.
For example: I add an appointment on my desktop computer and it syncs with the web server. When the web server gets it, it syncs to my cell phone via ActiveSync. Right now I'm using the free version of Mail2Web which doesn't support Outlook syncing. (I have to manually enter the data on the website interface and then it will sync via Activesync to my phone.) They do have a paid version starting at $11.95/mo that will supposedly do what I'm wanting to do with Outlook, but I'm not sure if this is overkill for what I need or not. Again I don't really need to sync email, just my calendar and tasks.
So do I need a full blown exchange hosting provider or is there some software (other than Exchange) that I can install on my Windows VPS that will do what I'm looking to do?
What's the best way to move exchange? Tried exmerge but it's bad, i.e. loss ratio. Tried export / import but not good with 50+ boxes, too slow that way.
What's the best way to move exchange from server to server (different domains / networks)
Im looking to find UK Hosted Exchange providers.
NOTE: Please dont refer resellers. Im looking for big companies that own their datacenter and manage their own exchange servers.
Something like intermedia, but with servers located in UK.
I have a slight issue that some of my emails are being converted to a htm file and attached to the email. I am using exchange server and outlook.
For example if I received an email and it was converted into a htm file and the body of the email was deleted so only the attachment existed which included the email.
There is no trend to this as sometimes it happens and on other occasions it doesn’t.
Besides this when I receive a read receipt many of these are converted to a normal email. I know this can happen from the senders side but I know for sure that some of the read receipts received should include outlooks read receipt icon although this is not happening. Is this something to do with exchange or my outlook installation.
does anyone have a fix for the Exchange 2007 kerberos issue when connecting Kayako to Exchange via pop3 or imap?
kayako says:
Quote:
The reason for the error you are getting is a bug in MS Exchange 2007. The exact reason is, Exchange server falsely advertises that it support Kerberos authentication even when it is configured not to use Kerberos. This causes the fetch request to fail from PHP as PHP-imap always tries to use Kerberos first.
The workaround to this issue is either to use a different mail server or compile PHP without Kerberos support(in that case it will simply ignore Exchange's erroneous behavior regarding Kerberos).
If possible you may setup a secondary mail server (Non exchange 2007) and forward the required emails there and configure help desk to fetch the emails from the secondary email server(non-exchange 2007) instead of your Exchange server 2007.
i have Server 2008 X64 but its blocking my from installing exchange server 2003 and 2008. either one i try i get the error saying it's not compatible.
i find this extremely weird? is their anyway around this?
ive set up Exchange 2007 on WS2008. I have a domain "fasterfasterfaster.net"
its nameservers are changed correctly and is pointing to the right IP address including the @ and CNAME records.
the mx record is set to mail.fasterfasterfaster.net
my DC is called "faster.local"
in the org configuration > hub transport, I have accepted domains:
fasterfasterfaster.net Authoritative
mail.fasterfasterfaster.net Authoritative
faster.local Authoritative
also in the org config, there is an internet send connector. its FQDN is mail.fasterfasterfaster.net.
for the Server config > hub transport:
Client is enabled with the FQDN: mail.fasterfasterfaster.net and permission groups enabled:
Anonymous, exchange users, exchange servers and legacy exchange servers
the Default is enabled with its FQDN to machineName.faster.local and same permission groups as above.
problem is, I am unable to recieve any emails (no bouncebacks)
And when I send email from an exchange account, the recipient recieves it from account@faster.local
I have a client with SBS 2003 and exchange. They had a bad HDD (it held the exchange .edb and .stm files).
I installed the new HDD, configured Exchange to use the new HDD for the files but I did not mount it when it was done because I was in a rush.
I came back into their office first thing in the morning and mounted the volume. However, they did not get any emails during the night.
My question is: The emails that were sent to them, are they gone forever? Did they get bounced back to their senders? If not, can they be recovered?
I have an exchange 2003 server. You can access OWA via the browser by using the IP address of the line the server sits on.
How do I go about converting this IP address into a domain so exchange server 2003 is accessible via [url]or [url]
I'm currently with 1and1 - obviously they suck - no need to belabor that here. I've been resisting a hosting switch, but the outages are more and more frequent, and my website is my livlihood. Need recommendations for web/MySql hosting and also hosting for a single Exchange account. Does not have to be the same company. Price is not a huge issue - I'm willing to pay for quality. Requirements are basic; about 3-5 GB of file storage, SQL 4 and 5, linux server. Shared server is fine. Any recommendations? Don't really trust the "review" sites.
Some kind of moving assistance/support would be GREAT. I've managed to muddle through and set all this stuff up over the years, but am not at all confident of my ability to move it all without screwing up. Includes 3 active databases, several sites, SSL cert (currently purchased through 1&1 but it looks like they farmed it out to geotrust), and exchange mailbox.
