zeldor.biz

Linux, programming and more

Fix: Filesystem notification initialization error

by 5 Comments

I upgraded my Mail-server to Debian 6 – squeeze, it was everything great till I started my Thunderbird and get this Message: Filesystem notification initialization error — contact your mail administrator (check for configuration errors with the FAM/Gamin library)

This error can be seen in your mail client and is often caused by Courier. If you are the administrator of the mail server, simply install libgamin instead of libfam as follows:

1

aptitude install gamin

Now restart all courier services:

1

find /etc/init.d/ | grep courier | while read line; do $line restart; done

Exim Courier and SSL

by Leave a Comment

Here I will be setting up SSL cert with Exim4 and Courier-MAP under Debian 5 or Lenny to secure the sending and retrieval of emails and username and password details to my server.
In this how to I’m using a free 30 days certificate from psw[dot]net.

Create you own SSL config in: “/etc/exim4/conf.d/main/ss_certificate” and put it in:

1
2
3
4

MAIN_TLS_ENABLE = true
tls_certificate = /etc/exim4/mx.domain.com.cert
tls_privatekey = /etc/exim4/mx.domain.com.key
tls_on_connect_ports = 465

Don’t forget to change the group of your certificate to: Debian-exim

1

chown root:Debian-exim /etc/exim4/mx.idrobot.net*

Exim standard config “/etc/exim4/conf.d/main/03_exim4-config_tlsoptions” has already some TLS options like:
tls_certificate and tls_privatekey. decomment it. Because we use our own config for it, see above.

Now we make exim listen on port 465, edit the following config:

1

vim /etc/default/exim4

Replace the standard:

1
2
3

#SMTPLISTENEROPTIONS=''
# to
SMTPLISTENEROPTIONS='-oX 465:25 -oP /var/run/exim4/exim.pid'

After restart Eeim will be able to listen on port 25 and 465, and we are able to send mails over SSL ; PS. don’t forget your firewall ;)

1

iptables -A INPUT -i eth0 -p tcp --dport 465 -j ACCEPT



The next step is secure receive of mails with Courier IMAP-SSL Deamon

Now as second step to complete SSL-configuration open your imapd-ssl config

1

vim /etc/courier/imapd-ssl

and search for TLS_CERTFILE

1

TLS_CERTFILE=/etc/courier/mx.domain.com.pem

This mx.domain.com.pem certificate contains certificate and rsa private key:

1

cat mx.domain.com.crt mx.domain.com.key >> mx.domain.com.pem
1

/etc/init.d/courier-imap-ssl restart



Test your certificate by connecting to SSL-Port:

1

openssl s_client -connect localhost:993 -state -debug