CentOS 5 Server :: Add Disclaimer To Postfix?

Dec 22, 2009

I have a webserver that I run myself utilizing CentOS 5.3. I added a postfix server just to send outgoing mail to people who are part of my webpage. I do not do any email exchange so I can actually receive email on the server, only send (if someone can help me out with that I'm willing to listen).Basically I want to add a disclaimer to the bottom of every email that gets sent out, no matter who sends the email, stating the the email is sent from an unmonitored email account so don't reply to the email. I followed the steps listed here [URL].. even though it was for Fedora 8 it seemed to do what I needed it to do. For some reason no matter who I send email with the disclaimer does not show up. I am doing masquerading so when the email gets send it shows it comes from my domain, not localhost.localdomain because most webservers block it assuming it is spam mail.

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Server :: Mail Disclaimer On A CentOS Sendmail

Mar 16, 2011

I run a CentOS server and would like to put a disclaimer message on every email that is send through that sendmail server.

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CentOS 5 :: Postfix Mail Server Will Not Start Tried To Change Postfix Smtp Port?

Oct 4, 2010

so i set out to change the default smtp port the server uses because my ISP blocks port 25 and i need the email to work in outlook. this morning i could receive email, but not send it. so i did some research and thought that i needed to edit the master.cf file in /etc/postfix/ by commenting out this line: smtp inet n - n - - smtpd -oand replace it with587 inet n - n - - smtpd (587 being the port i want to use)somewhere along the lines postfix server stopped running and now i cannot get it to start.if i try using SSH it crashes immediately and if i restart it in simple control panel nothing happens

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Server :: Put Disclaimer Words On Every Outgoing Emails?

Jun 8, 2011

is there any way to put Disclaimer words on every outgoing emails (both HTML and Plain text email)? ..

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CentOS 5 Server :: Configure Postfix On 5 To Relay Email From The Internet To The Exchange Server

Apr 24, 2011

i need to configure postfix on centos to relay email from the internet to the Exchange Server and i also need that emails sent from the exchange within the same domain be sent to postfix then resent to exchange because i have spamassassin and clamav installed on centos to filter all incoming and outgoing mails ...

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Server :: CentOS Mail Server - Dovecot & Postfix

Oct 2, 2010

Having my Diploma Final Project on setting up a virtual mail server within Local Area Network (LAN) only.I had follow this how-to http://www.linuxmail.info/squirrelma...o-in-centos-5/ and complete up to squirrealmail web mail. I added two new user to try on sending and receiving mail. It works.I run CentOS on VMplayer. I using my laptop to do all the stuff, the laptop default OS is windows 7, i install VM player on it and run CentOS inside the VM Player.I want to do testing on Windows 7 side by installing Thunderbird email client program, i want to connect to mail server with SMTP, IMAP/POP3 using the email service. I have problem while setting up user account on Thunderbird, Thunderbird seems like cannot detect my CentOS mail server. How ?

Do i have to do any other configuration on CentOS ? any DNS ? port number for IMAP,POP3 or SMTP ?

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Server :: How To Back Up RedHat4 Postfix To Centos 5.4

Feb 25, 2010

I was having before Redhat mail server which using postfix mail there is some problem of this mail server i need to format and to set up again new mail server in Centos 5.4.how to back up postfix mail server and to restore into Centos 5.4?[/B]

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CentOS 5 Server :: Getting SASL+Postfix To Authenticate?

Feb 19, 2009

I'm trying to expand my Courier+MySQL+Postfix+PostfixAdmin server to use SASL logins on Postfix so I can relay on my server. After following several guides I still can't get it to work: Postfix logs show the user transcript and end with "Authentication failure" but it does not tell me what told it that the login failed. The messages log show this:

Feb 19 22:48:55 sportlaan-server saslauthd[7254]: do_auth : auth failure: [user=berend] [service=smtp] [realm=mydomain.com] [mech=pam] [reason=PAM auth error] Which I don't get because I don't think it should be using PAM... I think...

The setup is similar to this one: http://www.howtoforge.org/virtual_users_postfix_courier_mailscanner_clamav_centos_p6
My SASL config has this in it:
/usr/lib/sasl2/smtpd.conf
pwcheck_method: saslauthd
log_level: 3
authdaemond_path: /var/spool/authdaemon/socket
mech_list: plain login

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CentOS 5 Server :: Postfix With Mail Store On NFS?

Jul 15, 2009

I tried to setup a Postfix system as VM Guest, in a single file image. So I want to store the mails on another hosts throught NFS mount. I got various errors when Postfix try to write to the NFS share. Anyone knows what's the correct setup for this? like file permission on the NFS?

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CentOS 5 :: Postfix Not Sending Email To Right Server?

Jul 23, 2009

I have postfix sort of working correctly. postfix can send email to the internet but it doesn't want to send email to my local exchange server. What I need is for postfix to send emails directed to @xyz.com to my exchange server instead of itself.

My setup
mail.xyz.com - exchange 2003 server
www.xyz.com - centos 5.3 server with postfix

www.xyz.com can send emails to my hotmail.com account so that part works correctly. www.xyz.com can't send email to username@xyz.com. postfix seems to be delivering the email to itself and not the exchange server.

How can I tell postfix to send the @xyz.com emails to my exchange server?

Here is a sample of my /var/log/maillog
Jul 22 15:43:43 list postfix/smtpd[9802]: D63168604A3: client=localhost.localdomain[127.0.0.1]
Jul 22 15:43:53 list postfix/cleanup[9805]: D63168604A3: message-id=<20090722204343.D63168604A3@www.xyz.com>

[Code].....

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CentOS 5 Server :: Postfix Routing To The WinWebMail?

Jun 7, 2010

Our company is an education training and there are 2 mail servers by used.One is postfix in CentOS,other is WinWebMail in windows2003.

Postfix server has 1 public IP and 1 private IP(192.168.1.224),but WinWebMail only has 1 private IP(192.168.1.253).Bcuz we'll broadcost news of training to students and ourselves,but postfix is cannot do that automaticlly,I guess that that is 2 server are the same domain name in DNS server[URL].The question is Postfix can send all mail but [URL].now I wanna try to used postfix have a routing to WinWebMail server,I mean I add a countant in WinWebMail server,if we wanna send some news to everyone in [URL].The postfix will be tranfor to WinWebMail server,and the WinWebMail broadcost to all of [URL] but now other domain name. how to do that in Postfix server?

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CentOS 5 Server :: Dovecot Postfix POP Not Responding?

Jan 2, 2011

I am running CentOS 5.2 on a server here in my home. It runs Dovecot and Postfix and also serves as a website host for a small website of mine. Everything works fine. POP, SMTP, Webmail, WWW, all works great and has for ages.Here's the issue. I recently reinstalled a clean copy of Windows 7 on a workstation in my home onto a new harddrive(I still have the old drive int he machine so I can boot to it as well). I setup the Windows Live Mail client to send/receive mail with my mail/web server. However, it won't connect to the POP server on my server machine.Here's the kicker. If I boot to the old harddrive that is running Windows 7, it connects fine to my mailserver and can send/receive just fine. I've checked, rechecked and rechecked and all mail settings on the mail clients on both drives are identical.

Note: The installations of Windows 7 on both drives is identical. Same computer name/ same credentials, same IP, etc. However, as I stated, I can send/receive email with my server if I boot to my old drive, but if I boot to my new drive, I cannot send/receive.

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CentOS 5 Server :: Postfix Random Delivery ?

Apr 13, 2011

I configured a Postfix Server to relay the messages to an Exchange Server. To keep it simple I configured all my users locally and I setup local .forward files in their home folders, specifying their local Exchange address.

Everything seemed to work fine (for years now), until I upgraded postfix in October, 23rd 2010.

Alas, lately I noticed that, since then, even if I just realized it now, sometimes the server seems not to use the .forward file and tries to use the local delivery using cyrus, which does not find a local mail folder (obviously, since I never created them as I didn�t want to) and replies to the sender with a "550-Mailbox unknown" error. Today I enabled the "-v" mode for "local" in master.cf the debugging the problem a bit better, to see what's the problem.

If I was sure about the problem being the postfix version (2.3.3, which is way too old now!), I'd give it a try and substitute it with the latest 2.8.2 (even if the server is a production server and is almost untouchable).

Following the error and my main.cf and master.cf setup files:

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CentOS 5 Server :: How To Send Email Outside LAN Using Postfix

Jun 2, 2011

How can I send email outside my LAN using postfix? Actually, I can received email from outside like yahoo. hotmail etc.. But when I am trying to send outside in my mail server here is the error I got..

Jun 2 21:19:51 microtontech postfix/smtp[4434]: connect to k.mx.mail.yahoo.com[98.139.54.60]: Connection timed out (port 25)
Jun 2 21:20:10 microtontech postfix/smtp[4435]: connect to

[code]....

I try to telnet yahoo.com and smtp.pldtdsl.net 25 here are the result, but when I try to telnet smtp.pldtdsl.net its showing trying only.. I checked if my ISP is blocking port 25 isn't. (I forgot what is the website I used to check if my ISP port 25 is block) I try already to used in my relayhost the [URL] but the email I sent still bouncing..But I remember last time when I was installed Hmailserver in my Win2K3 machine I sent email outside but I cannot received..

[code]....

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CentOS 5 Server :: Migration Sendmail To Postfix?

Sep 22, 2011

todo: I have now running sendmail with milters and auth, dovecot as lda configured with virtual domains / Local User, srs. on centos 5.x

I want to migrate to Postfix with:
at first step the same Local User now with Mbox and there Mails
same milter with macros for auth....
dovecot as lda

[Code]...

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Server :: Setup Reverse Dns Check In Postfix ( CENTOS 5 )?

Nov 4, 2009

How can I setup "reverse dns check" option in Postfix ?

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CentOS 5 Server :: Error In Installation Of Postfix In Centos5.2?

Mar 13, 2009

I am facing problem in postfix. I am using centos5.2.My postfix was running well but some strange problem it failed today.after that I wanted to restart postfix service , it does not restrat. But the postfix process is found in the process list( take memory and cpu ). Then i want to reinstall the postfix.The progress bar show it completed but not showing the completed message. I wait long time for the completion message but not display it and not return to command promt.When I cancel the command( ctrl+c) then the following error message is displayed:error: %post(postfix-2.3.3-2.1.el5_2.x86_64) scriptlet failed, signal 2For your information this is the process of installation:

yum install postfix
Loading "fastestmirror" plugin
Loading mirror speeds from cached hostfile

[code]....

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CentOS 5 Server :: Postfix No Longer Sending Mail?

Jan 7, 2010

One of my mailservers running postfix has suddenly stopped sending mail and has been generating the following errors:

Jan 7 12:03:08 postfix/sendmail[3560]: warning: premature end-of-input on /usr/sbin/postdrop -r while reading input attribute name
Jan 7 12:03:08 postfix/sendmail[3560]: fatal: root(0): unable to execute /usr/sbin/postdrop -r: Success

[Code].....

Things I have tried to fix this problem, but didn't work.

1) Stopped postfix, uninstalled and reinstalled.

2) Did a complete filesystem relabel with a touch /.autorelabel and reboot.

3) Did a restorecon -F -R on /etc/postfix, /var/spool/postfix and /usr/sbin/post*

Nothing above has worked and have no idea why with selinux disabled postfix works and with it on it fails.

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CentOS 5 Server :: Postfix Not Loading Config From Main.cf?

Feb 16, 2010

I'm trying to change some configurations but when I change it from the default options in main.cf, it doesn't actually update the running configuration. I've even restarted the server all together but it still doesn't update it.In main.cf, here is the configuration I've added:

bounce_template_file = /etc/postfix/bounce.cf
bounce_queue_lifetime = 4h
maximal_queue_lifetime = 4h
delay_warning_time = 1h

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CentOS 5 Server :: Postfix Multiple Domains One User?

Jun 2, 2010

I am currently running a apache/postfix email service on my server. I am using aliases for two addresses for example:

trscookie@serverone.com
trscookie@secondserver.com

so the emails no matter which domain receives the email trscookie always will receive the email.

However I am unable to work out how to 'reverse' this process, for example.

If i was to go to secondserver.com/webmail I would like the emails to get sent from trscookie@secondserver.com however they are currently all coming from serverone.com. Is it possible to configure this so that it is sent from the correct domain?

Here is my main.cf:

queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
mail_owner = postfix

[Code].....

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CentOS 5 Server :: Unknown User Error With Postfix?

Mar 22, 2011

why no matter what email I send to a user I get this error relay1 postfix/local[4023]: 75941291D4: to=<username@domainname.com>, relay=local, delay=0.14, delays=0.07/0.02/0/0.05, dsn=5.1.1, status=bounced (unknown user: "username")

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CentOS 5 Server :: Postfix Daemon Stops Working After A While?

Aug 7, 2011

On my virtual server I had the same issue within the last three month. The postfix daemon stopped working suddenly and I don't know why. I can restart postfix normally and it's working normally for a couple of weeks until the next crash. Does anyone have the same problems with CentOS 5.6 and postfix?

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CentOS 5 :: Switch From The Default Sendmail To Postfix Doing A Yum Install Postfix On 5.2

Dec 12, 2008

I have isntalled a server with Centos 5.2 OS, now I would like to switch from the default sendmail to postfix doing a yum install postfix I've noticed there is already available an rpm version for the OS but I would like to compile my own 2.5 version, I've noticed compiling from source does not allow me to use the mail switcher to tell to the system I'm gonna use Postfix instead of Sendmail as the default MTA while this is possible when I use the "official" rpm version of the package. Now my question is this, would this be a problem? There is some specific procedure/best practice I should follow? Or once compiled and configured Postfix I can safely disable/uninstall sendmail?

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Server :: Postfix Sends Mail To SPAM In Gemail (CentOS)?

Apr 16, 2011

I'm new here and I'm sure this question has been thrown around a lot but I just couldn't find a solution. I have a networking website I've setup and we need to send notification mails to our members depending on activity related to their profiles(messages, comments etc).We are hosting the site on Centos5.6 with VirtualMin and are using Postfix as our MTA. We also use google apps for email on the site. Heres the problem, the mails go through for some gmail users but more often than not, they end up in gmail,hotmail and yahoo spam.We've setup the appropriate SPF codes on the server, DKIM and rDNS works fine.v=spf1 ip4:xx.xx.xx.xx a mx include:_spf.google.com ~all Below is a sample email that goes directly into gmail spam. I've replaced the actual values with dummy text (Ip, Domain etc)

Delivered-To: my.email@gmail.com
Received: by 10.143.165.5 with SMTP id s5cs223598wfo;
Fri, 15 Apr 2011 08:38:22 -0700 (PDT)

[code]...

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CentOS 5 Server :: Sendmail To Postfix - Transfer All The Mail And Settings From The Old To The New?

Jul 31, 2009

i currently installed centos 5.3 with postfix. My old server is centos 4.5 final / new 5.3 final. Old server has sendmail / new has postfix. how can i transfer all the mail and settings from the old to the new? also, the old mail server is mail.xxx.xxx and for testing purposes i named the new mail server mail2.xxx.xxx.

when i an ready to put it into production, the new server will need to be mail.xxx.xxx and the old removed from the system. How do i go about changing the name and making sure everything comes out correct?

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CentOS 5 Server :: TLS Configuration - Section On The Wiki For Postfix TLS / SASL?

Dec 29, 2009

I was reading over and checking the How to section on the Wiki for Postfix TLS / SASL. I followed it completely and everything seems to be working fine however I am confused about the following section:

smtpd_tls_security_level = may
smtpd_tls_key_file = /etc/pki/tls/private/mail.example.com.key
smtpd_tls_cert_file = /etc/pki/tls/certs/mail.example.com.cert[code].....

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CentOS 5 Server :: Postfix Save Mail Before Relying It To Exchange?

Jan 29, 2010

I have postfix setup right now and it's relying mail to our Exchange server fine. What i would like to do though is have postfix save the email that gets passed through so that if a manager deletes an email, it's easy to look through by date and find the email he's looking for. Well, I'm thinking it would be a lot easier then having to need to pull out the backup tape and try to recover one email. Does anyone know whether I would be able to accomplish this?

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CentOS 5 Server :: Mailqueue Filling Up - Postfix/Courier/Spamassassin

Feb 2, 2010

In the last week email delivery had slowed down to taking approximately 24 hours and investigation has revealed that there were 45000 emails in the mailqueue. I flushed the mailqueue yesterday but mail delivery is slowing down again because emails are again being queued by the thousand.

The mails are mainly spam sent to ficticious users at a genuine domain hosted on the server.

My setup is running Courier IMAP with Postfix, Spassassin is installed along with Amavisd-new but I just don't understand why this has suddenly become a problem based on my setup not having changed for the last 6 months.

Should these spam emails be being discarded by spamassassin before reaching the mail queue? Are my discard score settings too high (6.9)?

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CentOS 5 Server :: Sendmail To Postfix Migration: Struggling With Config

Oct 25, 2010

I have a lightweight admin background, but good enough to set up most servers. I have switched from sendmail to postfix for the first time, but I keep going around in circles on the following...

In sendmail, I used to maintain a table (mailertable) where I would redirect email like this

Quote:

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CentOS 5 Server :: Access Denied When Sending Mail - Postfix

Jan 18, 2011

I have configured mail server with postfix with dovecot with no encryption:
When connecting with Thunderbird imap is working fine. When sending email from another domain to this domain again it is fine. But when I want to send mail from my domain to another it gives me error and this is /var/log/maillog:
Quote:Jan 18 18:23:09 srv1 postfix/smtpd[3991]: NOQUEUE: reject: RCPT from unknown[95.81.67.120]: 554 5.7.1 <Recipient email>: Relay access denied; from=<Sender> to=<Recipient email> proto=ESMTP helo=<[127.0.0.1]>

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