Multiple Mail Server Setup
Dec 20, 2007
First the run down...
I work for an ISP providing service to several thousand customers...
We are now taking on multi-millions of emails everyday (sometimes over a billion) (we purchased a couple of smaller ISPs and moved them to our mailserver)
Since the move from their old servers to the new... our uptime on our pop3/smtp server ran about 11... we had to institute a mail filtering server... it was getting around 2500 concurrent connections to the server and running an even higher uptime, and delaying emails around 8 minutes per message!
Our POP3/SMTP server is Redhat 9 (I know its old, but it still runs good) (Dual Xeon 2.8 HT 2 GB RAM NO RAID)... our frontend filtering server is FreeBSD (Dual Xeon 3.06 2 GB RAM RAID5)
Needless to say our current setup cannot handle the amount of email being processed... We need to implement amavisd back into the filtering equation so that spamassassin will filter mail based on the user preferences and delivered to procmail to our POP3/SMTP server so that it has no load basically...
SO what I want to do is this (please correct anywhere im going wrong):
I want to have a main incoming mail processing server (does RBL rejects and anything left over it will pass on to another server)
But the kicker is, I want the mail processing server to do this (we will call it mx1.troubledisp.com):
Incoming Mail->mx1.troubledisp.com
mx1.troubledisp.com->mx2.troubledisp.com
(But I want 3 servers in the middle, mx2, mx3,mx4)
Basically I want one message to go to one server, one to go to another, and so on... So basically EVERY message that comes in will go to a different mx server, not just loading up 1 server until it cant process anymore....
Then after it is processed it needs to go to the original mail.troubledisp.com
So if email #1 is received it will go like this:
mx1.troubledisp.com->mx2.troubledisp.com->mail.troublesisp.com
When email #2 comes in it goes like this:
mx1.troubledisp.com->mx3.troubledisp.com->mail.troubledisp.com
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Mar 13, 2008
I work in a DC and am looking for a better way to deal with clients who have multiple servers hosted with us.
Heres the scenario. Client buys a server or two at the beginning, with a HW firewall or they are clustered together and require their own switch and down the road, they like what we do and want to buy more servers.
However, we've been selling other servers and the only way we would be able to accommodate them would be to run a cross connect to another cab with their new server in it. Hopefully you can see where I am going with this.
This can keep happening multiple times and with multiple clients. and eventually you can end up with spider web of cable everywhere .
My thought of doing it right but more work would be to schedule down time with a client and migrate all the HW to a new cabinet where they can grow.
Weve also been tossing around ideas like getting projected growth from clients and setting aside space for them to having dedicated cluster cabinets.
how do other DCs handle situations like this?
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Sep 16, 2006
I have 1 server so I setup dns as ns1.mydomain.com, ns2.mydomain.com ip address pointed to server1. So, now I just bought another server. Can I setup ns2.mydomain.com pointed to 2nd server. Also how to setup more servers ie. 10, 20 server because I can only set up to 6 dns in one domain name.
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Feb 10, 2007
AMD Athlon54 X2 512Kx2 socket AM2 3800
slamd64-11.0
Just completed installing the captioned OS with everything installed except GAME. This is an experiment. slamd64 is now running on the box.
I'm going to setup virtual mail boxes on this server, allowing my friends using the mail server sending and receiving mails. Please advise;
1) how to check whether sendmail is running and configured properly.
2) how to setup virtual mail boxes. Where can I find relevant tutorial.
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May 12, 2009
Remote Spamassassin for Multiple Smartermail Server
I want to setup Remote Spamassassin(On Linux) for Multiple Smartermail servers. I want to the setup the spamassassin on a linux box
How i can setup this with multiple smartermail servers.
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Jun 4, 2009
I've got 2 servers...
server1 running Exim/CPanel
server2 running just HTTPD
How do i get server2 running sendmail to send to server1? and how do I pipe mail from server1 to server2 for whmcs?
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Apr 18, 2008
I want to setup a mail server on a CentOS box on a cable connection via comcast. We have a commerical account with one IP address only but the server will be behind a router.
Will I have to manually assign the server an ip address? As of right now I cant see the server from the outside. What will I have to do to have email route to that box?
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Apr 16, 2008
Q: Does one need to have more than one ISP (outside) static IP address to host its own mail and web server?
Or will one static IP with port forwarding to two different machines (one mail and other web server) be good enough?
What would happen if one wants to host two websites on one machine (web server) and have webmail to access emails (presumably via port 80) on another (mail server)?
My only concern is I guess my ASA 5505 won't support more than one assigned static IP or am I wrong?
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Jan 1, 2008
for setup and configuration instructions for setting up mail server on a Fedora Core 6 server. I googled it and most of the links are described with steps while installing OS, but i need to configure a mail server on a server where my site is already running.
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Apr 11, 2008
I have a VPS account with WHM/Cpanel console access. I have three domains that I am trying to setup. Within WHM I have setup three different accounts, one for each domain. I am able to login to the cPanel for all three accounts. This also created a new web directory for each domain in /home/domain_name/public_html/. I have placed my default index.php in all three public_html with the same permissions. But only 1 domain is working the other two are not. What am I missing? I have confirmed that all three have the correct DNS servers with godaddy and I can do an nslookup on all three. My provider told me to share the IP so that is what I am configured as..
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Sep 21, 2007
some setup recommendations as I feel I have outgrown my current server.
I have two websites:
#1 is a busy vBulletin based forum with 42,000 members.
#2 is a website with Wordpress and Vbulletin installed (though the forum is nowhere near as busy as the first site) and gets roughly 2000 uniques a day.
When site #2 gets a good surge of visitors from offline media or a large site, site #1 will die first with the "mysql error: too many connections" error and site #2 will take a very very long time to load.
For every other day, the load is quite low, nearly always under 1.50.
The current server that both sites reside on has the following specs:
Quote:
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 2.66GHz
stepping : 9
cpu MHz : 2667.540
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
bogomips : 5339.18
total used free shared buffers cached
Mem: 1003 484 519 0 3 192
-/+ buffers/cache: 288 715
Swap: 2047 25 2022
What sort of setup would be best for me?
A files server and a sql server?
A server for site #1 and another for site #2?
A single, more powerful server?
Or something else you recommend?
Also, for the setup you do recommend, can you recommend a hosting company that is reliable and can do it for a good price?
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Jul 4, 2007
I've registered a domain at a registrar. The domain is hosted at a computer at my university (running a linux distro). At the registrar I've made an mx pointer to the server at the university.
What would be the easiest way of setting up e-mail accounts like: support@domain.com, feedback@domain.com and so on? I would like to be able to access the e-mail accounts with pop3 or imap as well.
I have access to the server through ssh.
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Jul 28, 2007
I've got a client who seems to be having a problem with his e-mail on my VPS.
When he tries to download mails his browser(thunderbird) says 'Receiving one of 80' and hangs. The only solution is to go into webmail and delete some of the mails then try and receive them again. One thing that puzzles me is he doesn't have 80 mails in his account, he only have 33.
This isn't happening with anyone else who's using thunderbird and my VPS.
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Jun 16, 2014
I am running a VPS through 123-REG, Plesk version 11.0.9 with CentOS 6.4
I host 3 websites of my own (with 14 mail accounts)
4 websites for clients (with 10 mail accounts)
7 websites for clients (with 0 mail accounts)
The problem I have had in the last 2 weeks is that the server has been compromised once again by spammers.
2 weeks ago we had another instance and the support was even worse than before, I decided that the best way forward after irradicating the problem and correcting the source, and in the interest of each of my clients I decided to asign each client with their own IP address in the vain hope that if one client account is compromised the others will not be affected, 123-REG agreed that this is a solid solution so I purchased 5 additional IP addresses for the clients I host mail accounts for, (all of the said addresses were blacklisted when I was given them!!!) the reverse DNS was not set up correctly, and couldn't be through their control panel and some didn't match the SMTP banners, then I found out through them that the mail was still sent out through the Primary IP address anyway so if one client gets blacklisted they all still do.
Now they tell me that I can in fact configure Plesk to use each IP address for each client exclusively and they sent me a link to a support article that doesn't actually tell me how to do it.
I can do the following so far:
Log into puTTY and use the command: nano /etc/postfix/master.cf
Find the "smtp" record referenced in the article [URL]
1.1.1.1- unix - n n - - smtp -o smtp_bind_address=1.1.1.1 -o smtp_bind_address6= -o smtp_address_preference=ipv4
2.2.2.2- unix - n n - - smtp -o smtp_bind_address=2.2.2.2 -o smtp_bind_address6= -o smtp_address_preference=ipv4
although mine looks like the one below:
1.1.1.1- unix - n n - - smtp -o smtp_bind_address=1.1.1.1 -o smtp_b$
Is there something missing from the entry I have?
Assuming that 1.1.1.1 = the relevant IP Address for the client do I need to create an entry for each of my IP addresses?
Do I need to do anything with SMTP banners? If so how do I do it, and what do I need to do?
The article also mentions the default settings being restored each time you reconfigure mail settings and to consider a scheduled task, does that mean each time I set up a new mail account or a new client as I assume that I will need to repeat these steps in that case anyway, mainly because they will have a unique IP address that needs to be set up.
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Nov 27, 2008
I want to config my IIS SMTP server to copy ALL sent mail to another address.
Or, to log in more detail what was sent (I have W3C logging turned on but it doesnt record the mail subject or body).
Basically when a user complains they didnt get an email, I want to be able to look in the log to see (a) the mail was sent and (b) the body/subject of the mail.
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Nov 26, 2007
i just have a vps with plesk installed, since this is my first time have a vps, i have run into some problem,
so here is the problem.
i want to use pop3 account directly from my outlook, but i don't know how to fill the smtp outgoing address, which mean, i can logged in to account by i cannot send the mail via outlook, but if i'm using the webmail provided by plesk it's just run fine.
here is my dns config, please take a look:
note: domain name changed to domain(dot)com because newbie cannot post url link in this forum...
Host | Record Type | Value
--------------------------------------------
123(dot)123(dot)123(dot)123 / 24 | PTR | domain(dot)com
ftp(dot)domain(dot)com | CNAME | domain(dot)com
mail(dot)domain(dot)com | A | 123(dot)123(dot)123(dot)123
ns(dot)domain(dot)com | A | 123(dot)123(dot)123(dot)123
domain(dot)com | NS | ns(dot)domain(dot)com.
domain(dot)com | A| 123(dot)123(dot)123(dot)123
domain(dot)com | MX (10) | mail(dot)domain(dot)com.
webmail(dot)domain(dot)com | A| 123(dot)123(dot)123(dot)123
www(dot)domain(dot)com | CNAME |domain(dot)com.
-----------------------------------------------------
i've tried few such as webmail.domain.com but still cannot work in smtp outgoing email in outlook.
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