Ubuntu Servers :: Setup An Outbound SMTP Mail Server With & Using Multiple IP Addresses
Mar 15, 2010
This is the current setup that we have: We have approx 20 clients who pay us to send out a type of e-mail called an E-Blast to their customers. We currently are using 5 Microsoft Windows Virtual Servers to do this. The problem is that those machines are starting to break down. There are times that it will take Microsoft Windows approx 9-10 hours to complete 1 job. This is way too long. We want to move away from Microsoft Windows for this particular type of job as it seems there are more customers who are wanting to use this type of advertising.
It seems that using a Linux Server "Command Line or Shell" environment would be the best way to go as there is no GUI like Windows. Since there is just text...that is something that would/should process very, very quickly.
I am in the process of setting up a new SMTP outbound mail server. This is the current software & configuration (what is installed on this new machine):
All of the customer data (Names, E-Mail Addresses, etc that these e-mails are going to) are currently loaded in a Microsoft SQL Database.
My machine that I am using is plugged into the DMZ. I have 1 ip address for the 1 network card. I have also added/bound 4 more ip addresses to that network card.
I have configured Postfix for Multiple IP Addresses.
I can, from the command line, send successful test e-mails and receive them in my personal account.
As far as I know everything is setup correctly. I can and will post requested information so that it can be verified that everything is setup correctly.
Here are a couple of my questions:
Ensure that I have my Network / Interfaces file and my Postfix's Master.cf/Main.cf files setup correctly?
How can I setup this server to be an Outbound SMTP server and get it to use all 5 of the IP Addresses to send these e-mails quickly?
What can I use to check and ensure that this server is in fact sending out emails on all 5 IP
Addresses (I heard that there is a program named "Postal" that may help in determing this).
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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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May 26, 2010
I have just built an internal postfix server for sending mail only, it's not accessible outside our network. I will be sending from our domain, Rewriting the from field to abc.com is turned on in the postfix config. A friend is telling me this will not work as they will do reverse lookups on our domain. What does this mean? Obviously the domain the email is sent from is a valid domain. If they do a lookup from the IP the mail came from it would be global crossing, our internet provider? These outbound emails are critical client reports, I want to make sure they are not seen as spam.
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Jul 30, 2011
I am setting up a CentOS box as a NAT firewall that needs to also send mail. It needs to send this mail using an outside provider's SMTP. The provider requires SMTP over SSL. None of the machines inside the NAT will ever send mail except via the provider's SMTP nor will they ever receive mail except to local clients via the provider's IMAP servers.
So for the example the machine is TESTMACHINE. There is one internet facing ethernet port connected to a DSL modem via pppoe.
The SMTP it needs to send mail via is mail.host.net which requires SMTP over SSL (port 465) and username/password authentication.
The sendmail documentation is quite confusing on how to get this simple setup operating, so an example showing the appropriate changes to sendmail.mc and other require config files.
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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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Aug 30, 2010
This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
xx@xx.com
SMTP error from remote mail server after initial connection: host [URL] [ip address]: 550 Access denied...
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Jun 2, 2010
Linux newbe, trying to setup mail. Imap no problem, SMTP keep getting connection refused. Credentials and login info to smtp server same as working on windows machine...
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Aug 30, 2010
This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: xx@xx.com SMTP error from remote mail server after initial connection: host [URL] [ip address]: 50 Access denied...
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Apr 27, 2011
I have the 11.4 Gnome Distribution.everything is setup except my email sending.I have never been able to setup evolution correctly with gmail.I have followed the gmail settings of setting the smtp server to be smtp. gmail. com:465 and folowed the instructions here Evolution/FAQ - GNOME Live!to setup smtp.gmail.com with no port change.if there is no port specified the sending message window doesn't report an error it just hangs.
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Jun 4, 2010
Sendmail on the RHEL server is set up to forward email to company internal mail server (via SMART_HOST). This has worked fine for years.
From the server, doing a sendmail dave@company.com, the message is sent immediately. No problems - and no change here.
From the server, doing a sendmail roberto@compania.com (compania is the part of the company in Mexico) causes a 2m40s delay before sendmail does anything.
No packets are sent until after 2m40s wait. Message is always sent after the delay. It is not clear what the server is waiting for.
For *each* user in the @compania domain specified in sendmail command, an additional 2:40 is imposed before email is sent. Email is always sent after the n*2:40 sec delay.
Sending email to some_name@AnUnusedDomainNameThatDoesntExist.com is processed immediately - with a bounce email received in a couple of seconds.
Q: How do I determine where this 2m 40s delay is introduced?
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Apr 7, 2009
I want to setup a mail server on my LAN. I want to send e-mails from 1 system to another systems.
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Mar 14, 2011
I want to setup an intranet mail server as a project. I tried to go through various forums but could not get a satisfactory model. My sceme of things is as follows:The server a virtual machine is after a router which has a built in dhcp server. Prefer to use sendmail but postfix ok client machines should be able to access the mail on evolution/thunderbird or web access using squirrelmail.Mail will not be relayed to anybody outside the intranet.
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Feb 23, 2010
Setup my postfix mail server and courier-imap/pop. My postfix server now is working with tls and saslauthd, I can send/receive email inside my domain as well as outside. However, I need two separate smtp and imap/pop3 server, I mean two machine - one with smtp function and one with imap/pop3 function working together.
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Dec 10, 2010
how to setup a local mail server for internal testing on my php development work. For example if I sent an email using php script to [url]....I should be able to check the mailbox of 'someone' either in Outlook or SquirrelMail.I have done some reading about this. All I know is that I need Postfix with Courier. But I just don't know to get it working.
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Sep 2, 2010
I'm running ASSP on Ubuntu 10.04.1 it's mostly working fine. I have one problem which has been bugging me for some time. I don't want to filter outbound mail, but if I can relay (proxy) my outbound mail through ASSP, then it can automatically add to the whitelist.
As ASSP is a proxy, I need a server to send it to once ASSP receives it. I've tried my ISP, but this failed and they weren't willing to confirm if a connection attempt was received at their end.
Current setup
Inbound
mx -> router -> ASSP -> Exchange 2003
Outbound
Exchange 2003 -> mx
I'd like to setup outbound as either
Exchange 2003 -> ASSP -> <ISP> SMTP relay
Exchange 2003 -> ASSP -> <relay running on Ubuntu eg postfix>
Can anyone help me with troubleshooting steps or a better suggestion for how I can set this up. I'd love to know why my ISP setup didn't work, but I don't know a tool for monitoring IP traffic in Ubuntu SE, in windows I use Wireshark is there any equivalent I can setup for Ubuntu or a tool I can use in windows which will show all traffic, Ubuntu and windows server are on the same netgear switch, not sure it's smart enough to copy all traffic to another port for monitoring.
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Feb 13, 2011
I've several webserver (ubuntu 10.10 x64) on which I would like to be able to send mail like newsletter.I don't need to recieve mail on these servers, I'm using google Apps for recieving mail for the hosted domains.There's sendmail installed by default on ubuntu server..Previoulsy I was using Exim4 configured to use gmail SMTP server to send technical mails (apticron, logwatch, cron mail), but it doesn't fit for newsletter type of mailing.On my tries, I've wanted to setup Exim4 (just for the sending part, no inbox, and not using gmail stmp) which result in:
sendmail marked a uninstalled but still there and working Exim4 complaining about not being able to bind the port 25.I've removed exim4 (/etc/init.d/exim4 were not deleted...)I've reinstalled sendmail.I got this warning on installof sendmail: /etc/mail/aliases: 5 aliases, longest 21 bytes, 91 bytes total
How do I restore a working sendmail? What do I need to do so that mail sent from these servers aren't marked as spam? (not considering the content of the mail, but the server that send the mail) I see that some company used some specialized company like "grosbill.emailingoptin.com for grosbill.com" Should I specialize one domain for all newsletter ?
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Aug 27, 2009
Faced with disk-bound issues on a FTP server with high traffic. Would like to set up multiple FTP server nodes with dedicated storage for each node where all FTP access is managed by a master FTP server. So, a user would FTP to a single externally visible IP address for the master FTP server and then get routed to the appropriate FTP node. Are the mutiple FTP nodes required or is there a better way of doing this? Perhaps only one FTP server is required and then each node would serve as a separate file server
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Jan 14, 2011
We host our own mail server on our Fedora box. We would like for our field people using there smart phones to be able to send and receive mail. Receiving is no problem but sending creates problems with relaying and port assignments. Is there any way sendmail can be configured to allow these mobile phone users (AT&T, Verizon) to send mail through our server?
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Mar 31, 2011
I have a CentOS5 server with dual ethernet adapters + Webmin installed as my Router / Firewall / DHCP server working successfully with 1 static IP from my ISP. I also have 7 additional static IP addresses from my ISP needing to configure to individual servers inside my network. I have configured the additional virtual interfaces, but am lost on how to route data specifically from additional ISP address to specific internal network address.
Below is my desired configuration.
98.173.159.xx1 = eth0 physical interface ==> eth1 192.168.1.1
98.173.159.xx2 = eth0:1 virtual interface ==> 192.168.1.10 ==> CentOS Server 2
98.173.159.xx3 = eth0:2 virtual interface ==> 192.168.1.20 ==> CentOS Server 3
98.173.159.xx4 = eth0:3 virtual interface ==> 192.168.1.30 ==> CentOS Server 4
98.173.159.xx5 = eth0:4 virtual interface ==> 192.168.1.40 ==> Mac OS X Server 1
98.173.159.xx6 = eth0:5 virtual interface ==> 192.168.1.50 ==> Mac OS X Server 1
98.173.159.xx7 = eth0:6 virtual interface ==> 192.168.1.60 ==> Network Attached Storage Server 1
98.173.159.xx8 = eth0:7 virtual interface ==> 192.168.1.70 ==> Windows 2008 Server 1
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Feb 3, 2010
I'm looking to setup a home server for the purpose of backing up and storing the files on our multiple (Windows) computers. What kind of server should I set up? Samba? Lamp?
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Nov 26, 2010
my postfix to send and recive external emails, but many recive in trash folder.Other programer say me that is need some configurations in postfix with and dovecot to work, but i dont know what!This is my first time configuring a linux server at this week.
my main.conf
sample_directory = /usr/share/doc/postfix-2.3.3/samples
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
[code]...
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Oct 27, 2010
I have the following config with Postfix:
Quote:
But it keeps coming up with:
Quote:
Is there any reason from these configs as to why this should be occuring?
This was the guided step by step tutorial I followed: [url]
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Jun 7, 2011
Is the term a 'simple SMTP relay' a contradiction in terms?!I have an elderly Dell server on which I have just made a fresh install of 10.04 LTS server. I had 8.04 running on it for a long time, but I haven't tried an SMTP server before. It is a headless server with CLI (no GUI) and the latest version of Webmin installed.I have a basic LAMP server installed for a few websites using PHPbb and Joomla, and also I run a Mediatomb server for our household. When I installed I also chose to install mail services, but these remain masked behind NAT at the moment
I now want to set up an SMTP relay server so when I am working away and using different wifi points or my notoriously unreliable 3G dongle I can always send emails through the home server (from my iPhone and my laptop) rather than having to look up the SMTP server for each ISP of the place where I am working.
What I want is an authenticated server which takes my email and redirects it to my home ISP's SMTP server. I need only 3 authenticated users to have access (myself, my wife and my son). I don't need (or want) any incoming mail services at all.
Useful modules installed are: Dovecot, Postfix, Procmail mail filter, PAM - but how do I set them up?
Is there any simple setup that I could do, preferably through Webmin, but I can handle CLI if necessary?
I have looked at the Ubuntu help pages, but it looks so complicated to set up something that seems like it should be so simple to me.
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Feb 25, 2011
I tried setting up evolution mail incoming worked fine outgoing Big No, so I install Thunderbird and it worked like a charm. Then I decided I liked Evolution a little more and wanted to see if I could get it working and came across this. Firstly I entered all my details correctly double and triple checked. Look at my user name now when i try sending an email I get this? Why has my email changed?
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Aug 5, 2009
I have two nagging problems on one network which I do not have on another elsewhere, both using uptodate Debian servers. The server is on the private subnet behind a router/adsl modem. The symptoms of the one which does not work
1) Users cannot access their web site from lan. If they try, they get to the router web interface, same as if they entered http:10.0.0.138 which is the router's lan address.
2) Users cannot access smtp or pop3 service using the domain name, they can access it only using the servers LAN address.
I fear that I might have not set up the router properly because appart from that the two servers are almost identical but I do not know where I might have made an error.
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Sep 7, 2010
I have a sendmail alias configured to forward mails to pagers and it was working fine . The mail relays suddenly start converting a mail address of pager into a normal mail(outlook) format address. Say , instead of forwarding a mail to [URL] Provided no configuration inside the mail directory was changed.Which file is responsible in converting the mail-addresses? Is there any other problem with my mail-setup?
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Apr 4, 2011
I come back to everybody cause I don't find an explicit how to do this!In our internal network, I've created an email server with Postfix and Dovecot. (Just for internal domain, no needed to go outside)
But I've some server which use linux too. All are on CentOS 5.5.I would like to configure these servers to use my internal mail server for send email, and not configure sendmail or postfix on each server.
What I've to do exactly on each servers to use it? I search on the web but I don't find something very explicit
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Oct 20, 2010
We have one major problem in our dedicated online mail server. In this mail server both sendmail and qmail running for send and receive mails. In this server I can able to send mail to other domain like Gmail and yahoo its works fine. But I am not receiving any mails from other domains. And automatically I got telnet localhost 25 connections refused error. When I send mail from my webmail I got like this error Connection refused Server replied: 111 can't open SMTP stream. This is I got when I send mail from webmail. I am using centos 5.2 version.
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Apr 12, 2010
Installing PHPMailer v.5 (server running php5) with SMTP function. I have installed the main files in mail directory such as: # class.phpmailer.php: This is the main class file which contains the various email functions.# class.smtp.php: This additional class allows SMTP authentication.I don't think I need class.pop3.php as I'm sending mails server side (smtp)and should be accepted by most IP's pop3 servers.
All my mail functions work great with SMTP and I can send and receive. My problem is that my recipients only receive mail from admin@domain instead of "My Website Name" Sounds simple enough, I know and I have made adjustments to class.phpmailer.php and have inserted my specific mail attributes for my site such as mail address, mail from, smtp server, user/pass for smtp,etc.PHP Mailer v5.0 class.phpmailer.php is a very long script and I only found a couple of places to put the FROM address as follows:
PROPERTIES,
PUBLIC
/////////////////////////////////////////////////
/**
*
Email priority (1 = High, 3 = Normal, 5 = low).
[code]....
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