Tag Archives: postfix

Email Cleanup

Our email server directories will be cleaned out February 28th.

What this means…

All ham and spam folders will be completely wiped cleaned.
If you have email in either folder on your account, move it to your inbox or create a new folder to store it.

Thanks.
The Administration

Building a MySQL Capable Postfix RPM

Build Environment:
CentOS 5 x86_64
Postfix 2.3.3 Sources
gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)

2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

# Get the src
1) wget http://mirror.centos.org/centos/5.3/centosplus/SRPMS/postfix-2.3.3-2.1.centos.mysql_pgsql.src.rpm

# Install the src RPM
2) rpm -i postfix-2.3.3-2.1.centos.mysql_pgsql.src.rpm

# Install some dependencies I didn’t have
3.1) yum install pcre-devel
3.2) yum install rpm-build
3.3) yum install mysql-devel.x86_64 openldap-devel.x86_64 db4-devel.x86_64
3.4) yum install gcc.x86_64

# Edit SPECS; remove postgres support
4.1) cd /usr/src/redhat/SPECS
4.2) vi postfix.spec and change “%%define PGSQL 1” to “%define PGSQL 0”
# I didn’t want Postgres support
4.3) “%define MYSQL 1” was already defined for me

# Build the new rpm
5) rpmbuild -ba postfix.spec # Ignore warnings

# Install the new rpm
6.1) cd /usr/src/redhat/RPMS
6.2) rpm -i postfix-2.3.3-2.1.centos.mysql_pgsql.x86_64.rpm

Building an RPM build environment: CentOS Wiki

Spam Bashing

We finally have our spam filtering back in place at kulish.com. We’ve set it to a semi-aggressive filter where pretty much every incoming email is marked with a spam score.

We’re using the postfix+amavis+clamd+spamassassin setup.

While we’ve been doing without it for a few months (using client side stuff until I found time), I still don’t remember it working this well on the last server install.

Here’s a wopper of an email, just after the installation and testing were completed. The receiving parties and server names have been sanitized to protect the marginally innocent (**PROTECTED**).

From ***PRO@TECTED***.com Tue Feb 14 23:02:47 2006
Return-Path:
Delivered-To: spam-quarantine
X-Envelope-From:
X-Envelope-To: **PROTECTED**
X-Quarantine-Id:
Received: from lh (unknown [61.130.156.43])
by **PROTECTED** (Postfix) with SMTP id D90164B92A;
Tue, 14 Feb 2006 23:02:35 -0600 (CST)
Received: from 61.130.156.43 (HELO localhost.localdomain) (61.130.156.43)
by 61.130.156.43 with SMTP; Wed, 15 Feb 2006 07:06:05 +0200
Message-Id:

Debian: Email Server Build

Another semi-how-to for my old email server build.

1. Partition harddrive:
/boot 150MB Primary hda1 bootable
/ 3000MB Logical hda5
/var 15000MB Logical hda6
/home 6000MB Logical hda7
swap 1024MB Primary hda3 end of drive
/usr Balance Logical hda8

2. Activate swap partition
3. Initialize / first, then the rest (all partitions ext3)
4. Install kernel
5. Configure network
6. Install base system via http
7. Make system bootable
a. Install lilo into the MBR
b. Put all entries into menu
8. Reboot system
9. Remove pcmcia packages
10. Cancel out of all package managers (tasksel and apt)
11. No configuration of email system (exim)
12. Edit /etc/apt/sources.list to run Sarge:
deb http://debian.mirrors.pair.com sarge main non-free contrib
deb http://ftp.uk.debian.org/debian-non-US sarge/non-US main non-free contrib
deb http://security.debian.org/ sarge/updates main contrib non-free
13. apt-get update
14. apt-get dist-upgrade (may have to run multiple times)
15. apt-get install dhcp3-server (use config in cvs)
16. apt-get install bind9 (use namedb files in cvs)
17. apt-get install apache-common (use config in cvs)
18. apt-get install postfix-tls postfix-mysql
a. Internet with smarthost
b. mail.mchsi.com (for relaying)
c. noc@tekengine.net (added to aliases)
19. Configure postfix main.cf
a. useradd virtual (same uid/gid list in main.cf)
b. mkdir /var/virtual (chmod 750, chown virtual)
c. copy virtual dir to current server
d. copy mysql* files to /etc/postfix (use files in cvs)
e. /etc/init.d/postfix restart
f. mailq to check queue status
20. apt-get install libsasl2-modules libsasl2-modules-mysql
a. configure main.cf (check cvs)
b. copy smtpd.conf to /etc/postfix/sasl (file in cvs)
21. Test connectivity
a. telnet mercury 25
b. send email using client on LAN
22. apt-get install amavisd-new clamav-daemon spamassassin
a. accept defaults
23. apt-get install courier-imap-ssl courier-authmysql courier-pop-ssl
a. edit authdaemon
b. edit authmysql
c. /etc/init.d/courier-authdaemon
24. Edit amavis conf file to desired thresholds
25. Edit master.cf and main.cf to use amavisd

conf files:
/etc/courier/authmysqlsrc
/etc/postfix/mysql*
/etc/postfix/sasl/smtpd.conf
squirrelmail config