Server :: Configure Postfix To Relay Mail To Multiple Internal Mail Servers With Different Domains?

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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Server :: Setting Up Postfix As Outgoign Mail Relay For Several Domains / Hosts

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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Server :: Postfix: Sending Mail From Multiple Domains?

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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Ubuntu Servers :: Postfix Relay - Exchange Sends The Mail Instead Giving Recipient Mail A Valid Reverse DNS Lookup

Jan 12, 2011

The scenario: We have an external server that runs HTTP/DB servers for out shop system. Then, there's our local, in-house infrastructure that runs a.. yeah... Exchange 2010. The shop system on the external server needs to send mails to customers (order confirmations, invoices, etc.). seing as sending them directly through the local MTA (Postfix) would cause mail delivery problems because of reverse DNS issues, i've set the Postfix MTA to act as a satellite to our in-house Exchange Server, so the Exchange sends the mail instead, giving recipient mail servers a valid reverse DNS lookup.

Now, mails sent by the (proprietary, uneditable) shop system are relayed correctly and sent to the target e-mail address. My problem is: Mails not sent by the shop system, but by our own PHP scripts which run on that same external servers, are NOT relayed properly. So the Exchange is fine with the mails sent by the shop system, but not the mails sent by our scripts. This is what i get in the mail.log: The successfully relayed mail sent by the shop system:

[Code]....

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Ubuntu Servers :: Configure To Send And Receive Mail From Multiple Sub Domains Of Domain?

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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Ubuntu Servers :: Mail Server Setup For Multiple Domains?

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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Ubuntu Servers :: Mail Server Setup - For Multiple Domains ?

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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Ubuntu Servers :: Secondary Mail Server And A Mail Gateway/relay?

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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Server :: Postfix Or Qmail: Configure Multiple Mail For Incoming And Outgoing?

May 17, 2011

As a part of migration I am proposing different scenarios to my organization. One which is asked to prepare is to configure multiple mail servers to handle incoming and outgoing mails. Say I have -[URL], I need to have accept mails from [URL] and send mail from [URL].

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Server :: Configure Mail With Postfix & Cyrus-imap - Cannot Send Mail Through Command Line

Nov 19, 2010

I'm running SUSE linux Server version 11. I want to configure mail server with postfix & cyrus-imap. For that, i have read many documents in Internet by i met issues. I'm running DNS in this server & it's ok Now I cannont send mail through command line.

[Code]....

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Ubuntu Servers :: Postfix Relay Mail For Local Users?

Mar 1, 2011

I have a mail server running Postfix and the problem I'm running into is that when trying to send mail, I get a "relay access denied" error.Inside my main.cf, I did not specify 'smtpd_recipient_restrictions' so by default, the variable is:

Code:
smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination
The 'mynetworks' variable looks like this:

[code]....

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Ubuntu Servers :: Postfix Configuration - Send Mail To Other Domains

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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Server :: Internal Mail Relay To Exchange Setup

Jan 25, 2010

I have ticket tracking software that mails ticket to groups. Right now the software is on an exchange server. After moving it to a dedicated linux server (debian lenny) I cant get it to email any of the internal domain addresses. I have tried to setup sendmail to relay it to the exchange server. Logs indicate that it was sent by the ticket tracking software but the message never hits the mailbox. It also wont get to any other mail address. Is there a better way to do this? The crm software will utilize either a smtp server or any mail server on the localhost. The problem is that with the dedicated server on the same network as the exchange server, it fails to send the mail even if I assign an external smtp server. But if the dedicated server is on a different network then it works using any smtp server in its configuration. I need something that can "pass the email" to the exchange server. Or just be able to send the mail to internal email account and still be on the same network.

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Server :: Postfix Not Delivering Mail To External Domains?

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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Server :: Postfix Not Relay Mail Via Gmail Account SMTP

Feb 11, 2011

I'm trying to set up my postfix server to relay mail (via a php cms) using Gmail's smtp on my account, but for some reason, Gmail returns an error code that StartTLS must be sent first, my postfix main.cnf file can be found at pastebin, because of this forum's text length I cannot paste my postfix main.cnf file as can be seen I have everything set and configured for Gmail, but postfix (for some unseen reason) can not send StartTLS. [URL].

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Server :: Using Postfix To Relay To MS Exchange Allowing Only Mail To Domain

May 13, 2011

I'm using Ubuntu Server 10.04 and I can successfully relay mail generated by php scripts through an Exchange server.What I want to do is accept incoming mail from the Internet through postfix and relay it to the Exchange server but I want all mail that is not addressed to ...@mydomain.edu to be discarded.

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Ubuntu Servers :: Sending Mail From Multiple Domains?

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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Ubuntu Servers :: Migrate Postfix Mail Server To Exchange 2010 Mail Server

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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Server :: Use Postfix Send Mail Return 'relay Access Denied' ?

Jan 24, 2010

my server is Redhat as 5 + postfix +Dovecot .when i use smtp to send mail´╝îit can't to send,the system return "relay access denied" ? This is my maini.cf

Code:
# Global Postfix configuration file. This file lists only a subset
# of all parameters. For the syntax, and for a complete parameter
# list, see the postconf(5) manual page (command: "man 5 postconf").
#
# For common configuration examples, see BASIC_CONFIGURATION_README

[Code].....

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Ubuntu :: Gmail Relay And Post Fix / Send Emails With Postfix And Gmail As The Mail Relay?

Apr 29, 2011

My issue is that i'm trying to send emails with postfix and gmail as the mail relay,i'm trying to send emails to my self by sendmail -bv user@gmail.com

In the logs, i can understand that it been delivered to the destination,
taken from: /var/log/mail.log:
Apr 30 00:05:23 moni postfix/pickup[10490]: 9C7552170C: uid=0 from=<root>
Apr 30 00:05:23 moni postfix/cleanup[10495]: 9C7552170C: message-id=<20110429210523.9C7552170C@moni.localdomain>
Apr 30 00:05:23 moni postfix/qmgr[10491]: 9C7552170C: from=<root@moni.localdomain>, size=283, nrcpt=1 (queue active)
code....

When login in my gmail account i can't see nothing under the sent / inbox / spam folder.

it's seems like the mail are been sent.. but nothing is happening.

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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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Ubuntu Servers :: Verify That Mail Server Is Not An Open Relay?

Apr 16, 2011

I'm setting up a mailserver for my domain.I'm seeing relay rejections in the mail.logbut I'd like to have external validation that nothing bad is exiting the domain beforeI wind up on blacklists

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Server :: Unsure Of Exim Configuration - Accepts Mail From Users On Multiple Domains To Pass On To The Outside World

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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Ubuntu Servers :: Can't Send Mail Using PostFix - Only Receive Mail

Jun 30, 2011

I set up my mail server using the guide here: [URL] I am able to receive mail, I can send mail locally, but I can't send to external addresses. This is in my mail.log: Quote: Jun 30 14:40:43 Server postfix/smtp[10725]: 2FD9322015BF: to=<myemail@gmail.com>, relay=none, delay=1634, delays=1484/0.02/150/0, dsn=4.4.1, status=deferred (connect to alt4.gmail-smtp-in.l.google.com[74.125.65.27]:25: Connection timed out)

This is my main.cf:

[Code]...

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Server :: Configure Postfix Mail On Rhel5?

Jan 8, 2010

I want install postfix on rhel5 please send me the configuration of

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Jan 6, 2011

Actual I need to configure fetchmail and postfix in linux pc to get mail in outlook.

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Server :: Steps To Configure Postfix To Send Bulk Mail?

Apr 13, 2010

I want to configure Postfix mail server to send bulk mails to others domains only but they could not send to me. steps to configure Postfix to send bulk mails and what packages required for it.

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Server :: Postfix Logs - Difference Between The Mail.log And Mail.info Files?

Jul 27, 2010

I have setup a postfix mailserver and it seems to be working ok, we are only using this to relay mail to our forum users. Its not being used to recieve any email only send them out to the internet.

What is the difference between the mail.log and mail.info files? Can I turn one or both off? I see alot of messages like...

Just wondering what this string of log entries means? Also I am getting duplicates in the syslog file as well.

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Server :: Can't Get Postfix Mail Boxes From /var/mail To ~/Maildir?

May 31, 2010

I'm running a Debian LAMP server and I am adding postfix. The initial config is working and I can send and receive mail both locally and over the WAN. The problem is that I cannot get mail delivered to the user's home directory using Maildir/. I have set the:home_mailbox = Maildir/ parameter in main.cf but mail still goes to /var/mail after Postfix reload. The system is now using Maildir/ instead of mbox but in /var/mail. I really want to get mail into the user's home directory.

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CentOS 5 Server :: Postfix And Hosts File - The Mail Server Could Not Deliver Mail

Mar 20, 2011

I've setup my server by following a ton of goods, and it seems to work ok, but I need to start using my server for email in order to receive orders placed via my website. I've followed this guide - [URL] I followed the steps above, and tested the mail server via telnet, and all seemed to be ok. I tried sending an email via Squirrelmail, from cs@thinclientwarehouse.co.uk TO my working email simon@c1systems.co.uk, but the server returned with the following message:

<simon@c1systems.co.uk>: host mail.c1systems.co.uk[95.128.128.129] said: 550-Verification failed for <cs@localhost.thinclientwarehouse.co.uk> 550-The mail server could not deliver mail to cs@localhost.thinclientwarehouse.co.uk. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries. 550 Sender verify failed (in reply to RCPT TO command)

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