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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May 4, 2010
I am currently running Ubuntu Server 9.10 and followed this HOWTO on setting up my email server.
[url]
Everything seems to work correctly. If I look in the Maildir the emails I send to test are there.
The problem is when I try to sync my email via IMAP from my windows box (on a different network) it doesn't show any of my email nor does it deliver new email. My email app doesn't give any errors nor does the logs on the server.
How can I get it so my email syncs to windows computer? I am sure it is something really small that I am over looking but I can't seem to find it anywhere. I don't know if you need to see any of my config files but I can post them if needed.
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Dec 26, 2010
I am trying to set up a Mail Server -- Virtual Users with Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS 5.5 using this guide. These are the version and softwares I have used till now:-
[Code]....
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Nov 17, 2010
I have Centos 5.5 and using Postfix, procmail and Dovecot for sending and receiving emails. I have spamassassin installed too but not configured. I am getting lots of spams. I googled a lot to find if there is any configuration but I couldn't find.how to setup spamassassin to filter emails for spams.
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Feb 2, 2010
I have Postfix and Spamassassin setup on Ubuntu Server 9.10. The mail is working perfectly. Spamassassin is correctly marking messages as spam. My problem is with the milter and procmail. On past servers I was able to reject spam based on score via the spamass-milter. For whatever reason I can not get it to work. I have also tried with procmail, again, it does not work. Here are the relative lines in their respective config files:
[Code]....
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Jan 1, 2010
i followed this tutorial to the "T", [URL]. I am not able to login to the mailboxes with squirrelmail, it says "connection dropped by imap server" I used the whole address as a login just like it said to do. I can sucessfully authenticate with outlook express but it throws an error that say's [URL], no such file or directory. i can telnet into it remotely but when i type ehlo [URL] it just keeps showing all the 250 lines and wont let me generate a message.
from what i saw on the comments on the tutorial and googling there are many other people with this problem, however i found no solutions. This is fresh work and i have not touched any config files since finishing the tutorial
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Apr 7, 2011
I'm trying to get my server back up to snuff. I'm using Debian Squeeze right now and I'm up and atom with apache, mysql, php, pureftpd, ssh, and I have squirrelmail installed.
My dilemma comes with the mail part of the whole ordeal, Postfix and Courier are installed, have their keys made, and for what I assume, are configured correctly. HOW do I make new virtual users? My domain points to this machine as well as my MX record for mail.mydomain.com.
I need IMAP and POP working. And upon the creation of new email users, will SquirrelMail interface with Postfix and Courier? When I installed SM I set it up for use with Courier.
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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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Jun 23, 2010
Due to all the "fun" I had upgrading spamassassin from 3.2.5 to 3.3.1 on C55 I thought I would detail it here so as to possibly save others from all the frustration I have endured. There are probably a zillion different ways to make this work but this is how I did it and it seems to work well.
1) Acquire spamassassin rpm.
I downloaded several different versions from various sites and had problems with all of them so I ended up grabbing the SRPM from Fedora 13 spamassassin-3.3.1-2.fc13.src.rpm. This of course will not load onto C55 as rpmbuild has changed so I loaded it onto a FC13 box and then TARed the SPEC & SOURCES directories, copied them onto a C55 and built SRPM from there.
2) Install on C55
The new spamassassin requires several updated packages to make it happy.
a) perl-Mail-DKIM greater than 0.31. I cheated and used this one from FC8 perl-Mail-DKIM-0.32-3.fc8.noarch.rpm
b) perl-socket6 that is 2.0 or later. I got this one from DAG perl-Socket6-0.20-1.rf.x86_64.rpm
c) perl-NetAddr-IP that is 4.0 or later. Again DAG saved the day perl-NetAddr-IP-4.007-1.rf.x86_64.rpm
d) the spamassassin of course :)
Actually I built them from the SRPMs as I needed both the 32 and 64 bit packages for various servers.
3) Run sa-update --D to get the latest rules then restart the spamassassin service. For those who do not have access to a FC13 box you can get a copy of the SRPM I made here [URL].
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Jul 21, 2010
I followed this how to document [URL] to install postfix, Amavisd, SpamAssassin and ClamAV. My postfix installation is working fine and I can send and receive emails fine. However, it looks like SpamAssassin is not catching any emails. Emails do get passed over to Amavisd as I can see in the logs but ALL Messages comes out CLEAN without being tagged as spam.
As per the document, I did test by sending a test virus email
sendmail -i your-address@example.com < sample-virus-simple.txt.
This is caught and NOT let through so ClamAV is ok but when i send
sendmail -i your-address@example.com < sample-spam-GTUBE-junk.txt
it does get delievered without being detected as SPAM or tagged as SPAM.
As I said, I have followed the documentation dot by dot and hence do not have spamassassin starting up as a service but i guess amavisd starts it within itself as a module.
Also, my postfix version is the one that supports mysql virtual tables which I got from rpmforge.
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Mar 17, 2011
Anyone know what version of spam assassin is newer 3.3.1-3 or 3.3.1-52 I would assume 52 is newer but I don't know if once it reaches 99 it going to 2 Example 3.3.1-99 ---- 3.3.1-2 -----3.3.1-21 and so on. I could be completely off but can anyone just clarify if 3.3.1-3 is newer or older than 3.3.1.52
(On a side note does anyone know the difference between spamassassin-3.3.1-3.el5.rfx.i386.rpm and spamassassin-3.3.1-3.el5.rf.i386.rpm?? What does the X mean?) I looked at the release date of .52 and it seems to be in march 2010 whereas .1-3 seems to be in november. oes that seem correct? Does anyone have a direct download to spamassassin-3.3.1-3el5.rf.i386.rpm???
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Feb 22, 2010
block incoming email within either postfix or spamassassin when the sender equals the recipient. The manner in which our mail infrastructure is set up would preclude this from happening. Granted, we do have outside vendors that spoof our domain so we have to allow emails in with our domain as the sender/from. The vendors do not, however, utilize the same sender/recipient when sending emails.
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Dec 19, 2009
how to install Courier IMAP server and they all say the same thing, but they keep giving me problems.URL... is a link to the page I'm working on.I created the user, edited sudoers manually since I can't effectivly use visudo in the terminal since I don't know how to save. I also made sure that I restarted after I edited it in order to make sure it took effect. I used su compileuser and just logging in as compileuser and opening a terminal. After I made the user and edited that file, I created the directory mentioned and ran the command to create .rpmmacros. After that I got to work on wgetting the files and installing them and what not. The first one compiled and installed and so did the last one. The command "rpmbuild -ta courier-imap4.6.0.tar bz2" would not go though properly. This one I need to run as a non-root user and I've tried using every way possible to be as distant from root as possible, but it still gives me this at the end.
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May 10, 2010
I have installed qmail on my 10.04 server (Because I prefer qmail and dont want to use postfix) and I would like to just install courier IMAP/POP server without the Postfix (Or other mail servers).
Is there an apt-get install switch that will install just what I want to install without deps; or at least a way to block unwanted deps from being installed.
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Jun 4, 2011
I am administrating a server with CentOS installed. It came with qmail and courier-imap preinstalled, and Plesk.I need to manually add email accounts outside of Plesk, because my 1-domain Plesk license only allows the creation of one email address (yes, it sucks).
When I say add email account I mean creating a new email address, have email for that address be stored in its maildir, and have a corresponding imap (and hipefully also pop3) account that will be able to read that mail. All this with virtual domains.I've already found out how to create the new email addresses for qmail, so that email for the new email address is being delivered correctly. Now I need to create the imap/pop3 accounts for courier.
For the qmail part, I create a folder in in /var/qmail/mailnames/virtualdomain.org/username and a maildir called Maildir inside it. This is how the first mail address was created by Plesk and i'd like to maintain the same structure. As I've said, the qmail part is already working, I need to get the courier-imap part to work. Ideally, it should accept login with both short (i.e. myuser) and long (i.e. myuser@virtualdomain.org) user names.
Currently the only authentication module that is enabled in courier-imap is authpsa, which is Plesk's authentication module.in order to add more authentication modules, do I just need to add them to the authentication module list in /etc/courierimap/imapd, or do I need to reinstall courier-imap with support for such authentication modules? I thought I would only need to add them to the list, but I've noticed that the /usr/lib/courier-imap/authlib/ folder only contains a binary called "authpsa". Does that mean that other authentication modules are not even installed? If so, can I install them without reinstalling courier?
The second question is, what would be the most recommended authentication module that would make it easiest to create new email addresses/accounts from the command line? I need to be able to write a shell scripts capable of creating a new email address with all that is needed, and I'd like to keep this script as simple as possible, so for example I'd avoid mysql-based authentication as it sounds rather complicated. And the last question is, if I do need to reinstall courier-imap, how can I install a package without recompiling it? Will my one existing mailbox keep working?
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Aug 13, 2010
I have setup a postfix + courier + squirrelmail email configuration. I can get to the squirrelmail login page and run its test and it said everything was fine. After that I am stuck. What is the username and password or if it is not created, how do I create it?
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Sep 24, 2010
I can send emails to local accounts but not out to the world. Here are the refrences I used to set things up.
[URL]
I was able to send and receive after the "basic" setup. I added amavis-new and I am pretty sure that it stopped working then. (late nights, lots of changes/tries not 100% sure any more) Went back to basics trying to send a test email from telnet (on the server).
Code:
mail:~# telnet mail.my-server.com 25
Trying 216.240.35.89...
Connected to mail.my-server.com.
[code]....
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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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Mar 26, 2010
Brand new to Linux. Sort of got thrown in front of the bus if you know what I mean. The company I work for has a Linux server running CentOS 5.4 Company uses Linux for their Email, FTP and Web Server. Have been here a few years dabbling in and out of Linux and now that the old Admin has left the company.....I need to learn it ASAP. The server has run pretty solid until today.
The email server runs SendMail and SpamAssasin. Received lots of complaints today regarding extra SPAM. Noticed that SpamAssassin was not running. Tried to restart it through the WebMin tools and got the following error: Starting spamd: child process [3956] exited or timed out without signaling production of a PID file: exit 255 at /usr/bin/spamd line 2588.
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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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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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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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Feb 12, 2010
I'm migrating a mailserver from an old to a new mailserver. The new mailserver is based on ISPConfig 3.0.6.1. I would like to migrate what spamassassin learnt in the past from the old mailserver to the new one. Now the question:
- The 2 spamassassin versions are different. Is it a problem?
- Can I just migrate the database with this commands???
Code:
sa-learn --backup > sadb.bkp
sa-learn --restore ./sadb.bkp
-how to migrate SpamAssasins Auto White List and all others SpamAssassins databases?
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Apr 13, 2010
Upgraded my Debian server over the weekend - caught up on all the updates since January. One of them was Spamassassin, which was working fine before (3.2.5). After the upgrade to 3.3.1, it's NOT using Bayes anymore - and I'm now finding 200+ messages for male-enhancement/ED meds, knockoffs of expensive watches and no-study graduate degrees in my Inbox that previously would have gone to /dev/null. I have the following in /etc/spamassassin/local.cf:
[Code]....
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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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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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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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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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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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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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