Ubuntu Servers :: Mail Server For 400 Small Domains - Which One To Use?
Sep 1, 2011
I am going to try and replace our crappy Windows/imail server with a new ubuntu 10.04 LTS based machine. It will end up with about 400 domains on it with around 3000 users total. 96% of the domains have very light use. 4% of the domains have heavy use but do not send any bulk mail.
Can someone here recommend a mail server software package that would be easy to administrate and easy to backup/replicate? All we need is POP with webmail. We do not need IMAP or want any group/collaborative functions.
What do you usually use for anti-spam on a linux mail server? We want to keep it all open source if possible.
For hardware we are looking at an HP DL360 G5 with dual Xeons, 4G of ram, and the P400 controller with 6 SAS 15k drives. Do you think a server like this will be able to handle the mail on linux? Volume is around 400k messages a day inbound with about 10% being legit/90% being spam. The server will be dedicated to mail hosting and will not host websites.
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Aug 6, 2010
Two exchange servers internally. One is setup for example.com (192.168.1.10) and the other is setup for example2.com (192.168.1.20) Both are behind a single public IP.
I want to use postfix to sit in front of the two exchange servers. Postfix will accept mail for both domains and relay to the appropriate server. I have postfix installed with only defaults at this point.
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Jul 4, 2010
Im moving all my websites on a dedicated box. I had a cpanel hosting account, and now moving to a terminal and ssh system.I need some advice on choosing my mail setup. I need POP, SMTP, with multiple domains, as host for a few clients.I would like the most simple version.The server will only send +- 100 mails / day.I currently running Ubuntu Linux 10.04.
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Oct 10, 2010
I have recently setup an Ubuntu 10.04 Minimal x64 Server. I plan on setting it up as a mail server. I need a secure server, that has spam prevention on it. Im setting up around 50 domains and would like a web based control panel. What is the most secure mail server, that i can setup for multiple domains?
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Apr 6, 2010
how can i configure my server to send mails from about ten different domains i use google apps and want to know if its possible. Because it sends mail but all goes to spam and i have a static ip
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Nov 5, 2010
Let me start off by saying I am experienced with computers, though my knowledge of Linux and networking is limited. I've just recently started setting up a Ubuntu 10.04 server to be a SMTP server. I've followed this guide by the letter: [URL] What I've attempted, to test the server, is the following:
telnet localhost 25
ehlo localhost
(this returns all the desired information) I then do a MAIL FROM my domain which is accepted, and try to do a RCPT TO an external mail server (gmail) to test sending an email. I am then told 'Relay Access Denied'. I'm sure that there's something fundamental that I'm either not understanding or not doing correctly. I simply want an SMTP server that can send to other domains. What do I need to do?
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Jun 14, 2011
I want to configure a single mail server to send and receive mail from multiple sub domains of my domain. I've already installed Postfix/Dovecot and it is perfectly working for mydomain.com. And also installed roundcube for Web Mail. Can I further customize this setup to process mail to sub domains? ex- someone@subdomain1.mydomain.com, someone@subdomain2.mydomain.com, someone2@subdomain1.mydomain.com (someone@subdomain1.mydomain.com and someone@subdomain2.mydomain.com are 2 separate users. they should be able to log on to web interface separately)
Currently i use system account names as email user names. (ex - systemusername@mydomain.com). The only MX record in my domain DNS pointed to current server (mailhost.mydomain.com). I read about postfix virtual domains. but couldnt figure out how to use it to achive my target. I do not need configuration details. Just explain me the way to do it. I can do the rest my self.
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Jan 6, 2011
We have a application hosted in our server and it uses send mail for sending and receiving mails.mails can able to reach certain ids but it cant reach some ids. this is the log entry.
Jan 6 00:52:18 p2234270 sendmail[11009]: p046hWi5011897: to=<dinesh@heatstream.com>, ctladdr=<apache@p2234270.pubip.serverbeach.com> (48/48), delay=2+00:08:46, xdelay=00:00:01, mailer=esmtp,
pri=4530999, relay=smtp17.msoutlookonline.net. [64.78.22.100], dsn=4.1.8, stat=Deferred: 450 4.1.8
[code]....
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Dec 21, 2010
I have fetch mail in my root directory like this:
set no bouncemail
set postmaster postmaster@dot.com.gh
set logfile /var/log/fetchmail
poll pop.teledataict.com
protocol pop3
localdomains dot.com.gh
archive dot.com.gh
no dns
envelope X-Envelope-To:
qvirtual dot.com.gh
user "maildot3@teledataict.com" there
pass "mail"
is *
here forcecr
nokeep
flush
dropdelivered
fetchall
This works perfectly as I want. But right now, what I want is, I want fetchmail to download mails for more than one or several accounts in different domains and different pop servers. How can I improve this rc file to accomplish my task?
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May 23, 2009
i have configured postfix to deliver mail from an internal mail server to external domains... however i keep getting this errors
Code:
un 10 23:23:59 smtpserver postfix/local[28831]: 7800CF0058: to=<root@smtpserver.domain>, orig_to=<postmaster>, relay=local, delay=0, status=sent (delivered to mailbox)
Jun 10 23:23:59 smtpserver postfix/qmgr[5989]: 7800CF0058: removed
Jun 10 23:25:19 smtpserver postfix/smtpd[28824]: connect from unknown[192.168.5.22]
[code]....
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Jul 20, 2009
I'm running a server with two sites which both need to be able to send emails. Currently I have Postfix set up to send email via Google Apps. This works fine, but Google's servers ignore the From: address I specify and substitute the one I logged in with. Is there a way to make Postfix log into Google Apps with a different username based on what site the email is coming from? The server does not recieve any mail itself; Google recieves it and we have it set to forward it to the appropriate person's real email address. I'm only worried about sending mail.
(Postfix is not a requirement here, so if there's another mailer that can do this better, I'm open to ideas. However, sending email directly from the server isn't an option as it's a residential IP address and blocked by most of the big email providers.)
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Oct 6, 2009
I would like to setup postfix to act as a relay for the outgoing mails of a couple of servers each serving it's own domain.The mails we are talking about are standard administrative emails like user registration, password reset request. The volume of those mails will naturally grow as the site grows. Which for me poses the problem that depending on the growth of the site you will sooner or later hit the quotas imposed by (my otherwise preferred) providers like GMail or smtp.com.
So what I need is a mail relay that will only accept mails from authenticated clients from hosts in its access list and relay their mail without restrictions. Is that possible with postfix? What has to be changed in the config and what are the pitfalls?
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Dec 29, 2010
I'm in the process of starting a migration from an old postfix server to nice shiney new exim server however there are a few things i'm really not clear on and i'm hoping that some one here could point me in the correct direction. Okay the postfix server at the moment does the follwoing ( i'll try and keep this simple ):
* accepts incoming mail for users on multiple domains and puts the mail in the users mailbox ( external -> internal )
*accepts mail from users on multiple domains to pass on to the outside world ( internal -> external )
Obviously the POP and Imap functions are handled by other daemons.. I'd like to replicate this sort of setup on the new exim box, however the guides i can find only help with configuring the exim system for incoming mails ( external -> internal ) for multiple domains and i cant seem to find a guide that would indicate how to do both ( internal -> external and external -> internal ) on one box. I'm guessing i may have to do some sort of auth to get exim to accept and then handle the internal -> external side of things?
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Mar 12, 2010
I've tried to set up an old laptop with Ubuntu server - need to use it as a web server for a group of students on a local network only. I managed to get it working fine for just one user publishing webpages etc to a folder called VAR/WWW I could FTP files into the folder and access them again via FTP or a browser. I then decided to create some subaccounts (one for each student) I did this by typnig the following commands:
Sudo usermod -g www-data student1
Sudo chown -R www-data:www-data /var/www/student1
Sudo chmod -R 775 /var/www/student1
(In this example student1 is intended to be a subfolder of www and act like a sub-domain with write authority- at least that was my intention) Problem I then get is that if I use Filezilla to access each account I cannot see where to publish the files - wherevever I place them they are not accessible from the browser. Do any of you experts out there know the answer to my problems please.
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Nov 3, 2010
I have a problem relate to posttfix.I want to mirgare postfix mail server to exchange 2010 mail server but I can't do it,u can help me.You can show me have to do configure postfix and exchange how to?
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Mar 10, 2011
How do I make a local mail server that itself is a client to a WAN mail server.I want the local mail server to query new mail every 30 minutes from the WAN server.
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Apr 17, 2011
I work for a college with many departments. I'd like to just deploy one LDAP/krb5 server (plus slave replicas) to authenticate all users in all departmentsIs it possible to do this?The proposed DNs for the departments matches what is done for NIS now.If anyone has any pointers or URLs that describe how to properly do this.
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Apr 23, 2010
I have several web servers running apache on my LAN. Each internal server hosts a number of domains.I would like to make these available to the internet and make sure they all get to use port 80 and 443.My idea was to put Apache on the firewall and have all http(s) traffic from the Internet to my firewall be redirected by Apache to the different internal apache servers. This, in theory, would allow me to keep the standard http(s) port.
Can this be done? I was thinking of mod_rewrite and mod_redirect but in all honesty, I'm a little at a loss on where to start.Can someone point me to relevant documentation or give me the basic idea on how to start?
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Jul 1, 2010
I recently purchased a GoDaddy domain with the intent of hosting a website myself at home on a box First of all, I don't have a static IP, so I set up dyndns with my router. Do I want to just have GoDaddy forward traffic to my dyndns account? Or do I manually change the nameservers? To what? Also, this seems to work for http(s) traffic only. What happens if I want to use ssh/ftp/smtp? And do I need to configure anything on my end aside from installing/configuring the appropriate server binaries? Is there a way to update GoDaddy when my ip changes?
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Aug 3, 2011
Our primary mail server is Exchange 2003 Standard on Windows Server 2003 Standard - don't shout at me; I inherited it already set up this way.I have a couple of hardware identical redundant servers (HP ML350 boxes), all with very fast 2 or 4 disk arrays, multiple core CPUs and plenty of memory, and I am looking at two potential new additions to the infrastructure.
A secondary mail server is high on my list of priories. I've been well and truly bitten by Exchange in the past and given that this particular box has been running four years straight and that it's mail store is dangerously large, having a secondary mail server in place suddenly makes a lot of sense.
A new Exchange 2010 box is currently being set up, but the secondary mail server will remain in place even when the new Exchange server is brought online, so this won't be a wasted exercise.... I also want a gateway box in place to filter and relay mail to the primary server, or to the secondary server if the primary is unavailable. Currently our outer perimeter is:
ISP supplied CISCO router
Draytek VigorPro 5510 UTM
Untangle running in bridged mode (primarily used for SPAM filtering, URL blacklisting, and very little else) Exchange 2003 sits behind the Untangle box. This is how I want to end up:
CISCO >> Draytek >> Ubuntu gateway >> Exchange/secondary mail server
I know I could replace/remove the Draytek but I want it to remain for several reasons, including lots of VPN dial-in users already configured and that it offers us an additional layer of email antivirus scanning before things hit the Exchange box. No point switching all of our remote workers over to new tunnels unnecessarily...
I have done some research and have started testing a pilot secondary mail server using Ubuntu/postfix DNS is properly set up and MX records and reverse PTR records are all present and correct, and things are looking encouraging so far. Before I go out over deep waters and start to flounder, has anyone who has done something like this got any obvious howlers I should be looking to avoid ?
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Jan 5, 2010
i got an old server with a 64mb flash-disk in.this seems to be the boot-disk.would it be possible to get ubuntu server on this?there is also an ide-disk in.in my opinion it should be good to boot of the flash disk and put the /home or /srv on the ide disk.someone any ideas about this?
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Mar 8, 2010
I am trying to setup a file server for a small office but have hit a couple of hurdles, is there a step by step guide how to setup a network for windows and mac computers to use it? I had setup a share etc but once I restarted the server all the files disappeared which I had in the home folder? Also when I setup users how can I use passwords that I select as everytime I set one it encrypts it and uses that instead of my one?
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Dec 25, 2010
I installed it on very old machine P3 1200Mhz and it works ok but I have problem with text mode because I have 75x132 aprocs. text on screen and I don't see what I type or system replay. Is there simple way to change to 25x80 or something with greater letters. I don't have GDI.Someone sad to me to do:sudo dpkg-reconfigure console-setupand it's does the job but when I restart system it's gone.
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Jul 2, 2010
How to configure DNS server for my small network. In Fedora Linux operating system I want to use Linux as a DNS server for my small office. there are files " /etc/hosts" and "/etc/resolv.conf ".
what is the purpose of these files and in which situation we use these files? For configuring a new DNS server. how can i configure my own DNS server for my small office? Any blog or site in which they show steps to configure DNS server.
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May 28, 2011
How to restrict users to send mail to outside domains in qmail server, i have centos and qmail installed
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Jul 31, 2010
I have a server with a static IP that I use as a sendmail server. The problem is that port 25 is exposed. As a result, anybody can login to the SMTP server and send mail from my domain as a user that does not exist as well as email from other non-existant domains. I'm sure there are sendmail options that I can enable to do some checks, like if the user exists on that server or if the domain is the same on the server, etc. I was wondering if you guys can mention a few that I can add to my sendmail.mc file?
I have thought about auth login, the problem is if auth login is on my public port then I won't be able to receive email from gmail because it would be unauthenticated. Also, I only have 1 mail server. I know the ideal solution is to have 2 mail servers. One for outgoing mail/internal mail server where you can enable auth login and the other for incoming mail which just acts as the relay to the internal mail server. That way spammers can't login to send mail out. That's another question I had, how do I configure sendmail to only send email out/in?
Anyhow, so I have to make do with 1 mail server for now. So I decided to add a few rules on iptables. I grabbed the IP range that gmail uses when I receive mail from then and added it to my iptables with the following command.
[Code]....
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Jun 30, 2010
I just finished getting a semi-old desktop computer up and running with ubuntu server edition. It's running subversion and samba for my office of 5 people. I was wondering if there was a simple online/cloud based backup service to automatically back up my subversion repository and samba shares in case of any hardware problems?
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Dec 18, 2010
After days and days spent in reading guides, how-to, forum post and much more, I still have some doubts regarding the possibility of developing a personal mail server having a fully functional ubuntu server. ( of course this is due to my lack of knowledge...hehe )
First thing I wish to understand is the focal point "Can I have my private mail server pointing to mymail@myinventeddomain.whatever ONLY IF I have previously registered ( bought ) myinventeddomain.whatever?"
Second thing is: " Could it be a work-around setting up a free dynamic name server ( pointing to my server, where a LAMP stack is already fully functional ) and then use this "name" to create my email? "(*) Example: using my own server, already accessible from outside my lan using a free dyndns name, I'm able to access and manage some web-based services. Is it possible to apply concept two at this situation? The base idea is to have my own email service, with my own domain like neomod@thenameiwant.xxx , so I can create email-based notification between my server and some other email addresses without relying onto some public service ( let's say google or my own isp mail server ).
I have read about the common solution in theese cases ( Postfix ) but in each guide, tutorial, faq or similar I could have read there is no explanation about " How to choose/obtain your own domain name".Reading forum discussion situation isn't better, because some one clearly states that I need to by a domain name ( ex. godaddy, aruba, etc. ) while some others say that I can realize it on my own just using dinamic dns name and a few other things.So beg my pardon if this question might seems stupid, but since I already own a domain name+webhost I reallu wish to understand before spending other money.
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Apr 9, 2010
I am talking classes at a university. One of my classes has a large group project. Part of the project has me setting up a mail server. I don't have a domain to use for this server, So I need to have it setup for local use only. but I have not been able to find much info on how to do so for local use only.
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Mar 9, 2010
I'm looking for some sort of app that will hit a pop3 server every x minutes and automatically download the mail from it to a text (mbox?) file. It's a remote server so something that can be ran from terminal and just set up in a cron job I guess.
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