Hi
I am configuring postfix server to send mail for 8 differnet domains. I configured it using virtual_alias_domains and virtual_alias_maps parameters. I am able to send mail as FROM any of these 8 domains.
I am facing issue with the header of mail being sent from any of the virtual domain, please refer to the header of one of the mail as below:
Please refer to the 7th line in the header:
"Received: from CentOS52.localdomain ([<my public IP>])"
CentOS52.localdomain is the hostname of the system postfix is hosted on.
If I am sending from domain tmails.com then why is it showing hostname "CentOS52.localdomain " in the header, is there any way to replace hostname in the header with the domain name.
like if I am sending mail as ashwani@tmails.com then it should show in header at 7th line:
"Received: from tmails.com ([<my public IP>])"
and if the second virtual domain configured in my postfix is "xmails" and if I am sending mail as ashwani@xmails.com then it should show in header at 7th line:
"Received: from xmails.com ([<my public IP>])"
Header:
Delivered-To: ashuji@gmail.com
Received: by 10.220.74.19 with SMTP id s19cs55809vcj;
Wed, 10 Jun 2009 11:33:24 -0700 (PDT)
Received: by 10.142.232.7 with SMTP id e7mr637135wfh.164.12446588
Wed, 10 Jun 2009 11:33:24 -0700 (PDT)
Return-Path: <ashwani@tmails.com>
Received: from CentOS52.localdomain ([<my_public_IP>])
by mx.google.com with SMTP id 3si1551335pzk.134.2009.06.
Wed, 10 Jun 2009 11:33:23 -0700 (PDT)
Received-SPF: fail (google.com: domain of ashwani@tmails.com does not designate <my_public_IP> as permitted sender) client-ip=<my_public_IP>;
Authentication-Results: mx.google.com; spf=hardfail (google.com: domain of ashwani@tmails.com does not designate <my_public_IP> as permitted sender) smtp.mail=ashwani@tmails.c
Received: from indiaws145 (unknown [192.168.2.72])
by CentOS52.localdomain (Postfix) with SMTP id CD778781E5
for <ashuji@gmail.com>; Thu, 11 Jun 2009 00:03:19 +0530 (IST)
Message-ID: <6A5120BB1FEC46B9AA851EA2D
Reply-To: "Ashwani Jain" <ashwani@tmails.com>
From: "Ashwani Jain" <ashwani@tmails.com>
To: <ashuji@gmail.com>
Subject: Test-5
Date: Thu, 11 Jun 2009 00:03:14 +0530
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_0
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.5512
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579
This is a multi-part message in MIME format.
------=_NextPart_000_005D_
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding:
hi!
------=_NextPart_000_005D_
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.6000.16825" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>hi!</FONT></DIV><
------=_NextPart_000_005D_
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.
Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
I am going to host around 8 mail domains on this server and want only domian names (tmail/xmails etc) to appear in header and don't want HOSTNAME to appear any where in header
Kindly help to to configure this parameter (smtp_helo_name) dynamicaly so that everytime SMTP talk to other SMTP it tells mail domain name instead of hostname.
Thanks & regards
Ashwani Jain
Usually a system that email hosts domains deals with inbound email.
The complexity is that the process has to determine what the sender's domain name is and then alter the SMTP greeting. Do you also have multiple hostnames associated with the IP of the mail server? If you do not, the SMTP connection could be rejected if the greeting says hi host.domain1.com while the IP resolves to host.someotherdomain.com.
You should check the FAQ at www.postfix.org to see if what you want is supported.
I do not know whether the below will do what you want:
http://www.postfix.org/
OK, On my server I have 8 virtual NIC port eth0:0-eth0:7. Each has different private IP natted with some public IP. Each public IP resolves to different sender domain like for example for private IP on eth0:0 its natted public IP resolves to tmails.com and or private IP on eth0:1 its natted public IP resolves to xmails.com and so on for each private IP.
I am also using follwing config in master.cf to allow clients to communiate with sending domains on each private IP:
localhost:smtp inet n - n - - smtpd
10.13.0.208:smtp inet n - n - - smtpd
10.13.0.211:smtp inet n - n - - smtpd -o myhostname=tmails.com
10.13
After
So answer to your question is yes using above config in master.cf i have multiple hostnames associated with each IP address. Means each IP address has different hostname.
I think you are missing the point. You seem to be trying to provide the illusion that each domain has its own dedicated mail server. To what end?
You could try to define a relay host (reference the link posted in prior comment) that will redirect/relay emails sent by user@tmail.com to/through 10.13.0.211 and see whether header entry on the outgoing side matches the sender's email.
Yes! Your guess is correct, I am trying to provide the illusion that each domain has its own dedicated mail server. I just tried to use the relay host as below but it did not solve the problem:
in master.cf added entry:
10.13.0.210:smtp inet n - n - - smtpd -o myhostname=sending_domain.
Cont
@
service postfix restart
But even after this, its still showing hostname in header instead of sending domain.
I tried below line in master.cf but it did not make any difference:
localhost:smtp inet n - n - - smtpd
10.13.0.208:smtp inet n - n - - smtpd
10.13.0.211:smtp inet n - n - - smtpd -o myhostname=sending_domain.
10.13
10.13
10.13
10.13
10.13
10.13
S
Delivered-To: ashuji@gmail.com
Received: by 10.220.74.19 with SMTP id s19cs163142vcj;
Thu, 11 Jun 2009 11:39:36 -0700 (PDT)
Received: by 10.114.190.6 with SMTP id n6mr4417515waf.133.1244745
Thu, 11 Jun 2009 11:39:35 -0700 (PDT)
Return-Path: <dan@test_domain.com>
Receive
by mx.google.com with ESMTP id 28si756790pzk.61.2009.06.1
Thu, 11 Jun 2009 11:39:34 -0700 (PDT)
Received-SPF: neutral (google.com: <my_public_ip> is neither permitted nor denied by best guess record for domain of dan@test_domain.com) client-ip=<my_public_ip>;
Aut
Receive
by sending_domain.7.com (Postfix) with ESMTP id C160B980A7
for <ashuji@gmail.com>; Thu, 11 Jun 2009 14:39:33 -0400 (EDT)
To: ashuji@gmail.com
Subject: Test Email System
Message-ID: <5067428837adb32d05ecd52479
Dat
From: <dan@test_domain.com>
Reply-T
MIME-Ve
Content-Type: text/plain; format=flowed; charset="UTF-8"
Content-Tra
Hi,
This is a test of the emailing system. If you received this ok, then
everything is working as it should.
My intenet is to replace the occurance of myhostname with sender_domain.
The issue with what you want to do means that the users have to use your mail server as the outgoing SMTP. Does each user use the IP that corresponds to their "dedicated mailserver"
I.e. user@tsmail.com uses the public IP that is mapped to the SMTP service that has the myhostname=tsmail.com.
I think that to provide the illusion of having a dedicated mail server you are wasting the limited public IP resources you have.
Are the users for whom you provide mail services use you as the outgoing ISP? It is likely that the outgoing email those users send goes through their ISP's mail servers.
The creation of an illusion is much more complex. Note the Message-ID which references the radicorp.com domain. On a dedicated server, the Message-ID would reflect the tsmail.com domain or the mail server's hostname.
post the contents of the sender_relay as well as the new header.
One other thing to try is look at /etc/hosts. Do you have an entry such as
10.13.0.211 tmails.com
If refer to link http://bugs.debian.org/cgi
Please suggest ?
The DNS does not controll the greeting your server issues during the connection.
The option you define for the inbound connections are the the same as the process used to send the messages out.
I.e. you have setup eight doors to enter your server with each door representing a different entity. The problem is can you direct the outgoing message through a specific door.
TLS deals with Enrypted data exchange.
Do the people for whom you handle the inbound emails use your server to send their emails out?
> 10.13.0.214:smtp inet n - n - - smtpd -o myhostname=sending_domain.
I missed one important thing - smtp_helo_name is not valid option for smtpd, so above cannot work.
I think the only way you can achieve this, is to run multiple instances of postfix, each one with different config file (-c option for postfix binary). In such case, you may also need to use separate queue directory for each instance (queue_directory option to set in main.cf).
Problem was resolved after editing sendmail.cf file with following:
localhost:smtp inet n - n - - smtpd
10.13.0.208:smtp inet n - n - - smtpd
10.13.0.214:smtp inet n - n - - smtpd -o myhostname=connect.domain1
10.13.0.211:smtp inet n - n - - smtpd -o myhostname=domain2_name.co
10.13.0.209:smtp inet n - n - - smtpd -o myhostname=connect.domain3
Business Accounts
Answer for Membership
by: oklitPosted on 2009-06-11 at 05:34:47ID: 24601384
May I ask why do you want to change this?
This is name of your server (set in myhostname). Postifx uses this to introduce itself to other SMTP servers.
This is controlled by smtp_helo_name option (which is by default set to $myhostname). You may try to change it dynamically with some transports probably, but I really don't see any reason for this (if you have some - please write it - maybe there is some other, easier, more elegant solution).