Archive for the ‘Server’ Category
How to speed up logins in pure-ftpd on Debian or Ubuntu Linux by disable name resolving
If you experience problems with slow logins in pure-ftpd, this is often caused by a problem with the resolving of the clients hsotname. This happens e.g. when you run a FTP server in your intranet and the hostname of the client computer does not exist in DNS. To disable name resolving in pureftpd, run the command:
echo ‘yes’ > /etc/pure-ftpd/conf/DontResolve
and then restart pure-ftpd
/etc/init.d/pure-ftpd-mysql restart
Disabling name resolving also fixes the following error message:
Jul 24 16:26:28 ispconfig pure-ftpd: (?@?) [ERROR] Sorry, invalid address given
How can an email user in ISPConfig 3 change his password?
To allow email users in ISPConfig 3 that do not have a client login to change their password, you can use one of these webmail plugins:
Plugin for roundcube:
http://www.howtoforge.com/forums/showthread.php?t=37077
Plugin for Squirrelmail:
http://www.howtoforge.com/forums/showthread.php?t=35297
Tutorial about installing the squirrelmail plugin:
http://www.howtoforge.com/how-to-configure-squirrelmail-to-allow-users-to-change-their-email-passwords-on-an-ispconfig-3-server
How to renew SSL certificates for courier pop3 and imap server on Debian or Ubuntu?
This articles describes the renewal of SSL certificates for courier pop3 and imap server. This is nescessary e.g. when the certificates are expired or contain the wrong hostname.
First delete the exsiting certificates:
rm -f /etc/courier/imapd.pem
rm -f /etc/courier/pop3d.pem
Then edit the template that contains the details for the ecrtificates so that the hostname in the certificate matches the hsotanme of your server and that the email address matches your postmaster email address:
vi /etc/courier/imapd.cnf
vi /etc/courier/pop3d.cnf
and create the new certificates:
mkimapdcert
mkpop3dcert
Courier pop3 and imap have to be restarted so they pick up the new ecrtificates:
/etc/init.d/courier-imap-ssl restart
/etc/init.d/courier-pop-ssl restart
ISPConfig: I created a new user or website but he cannot log in to see the website statistics.
The statistics are updated once a day. Once this has happened the new user can log in.
ISPConfig 2: What is a Co-Domain?
Under “Co-Domains” you can enter subdomains or even total different domains that should point to that web.
Example:
If you can reach your web by www.xyz.tld then you could enter the subdomain www2.xyz.tld under “Co-Domains”. You could also enter the new domain abc.tld (e.g. with the host www, so that www.abc.tld points to your web www.xyz.tld).
Postfix: One of the users on the system has a CatchAll-email address. He receives all emails, even those intended for users of another site on the same server.
Please check if the domain of the users that receives all emails is the same as the domain $mydomain in /etc/postfix/main.cf. If this is the case, change $mydomain and run
postfix reload
on the shell.
You should never enter a domain that is used for a virtual site on the server as $mydomain in /etc/postfix/main.cf!
Which virus- and Spam scanner is used by ISPConfig 3
ISPConfig 3 uses ClamAV (http://www.clamav.net) as virus scanner and spamassassin as spam scanner. Amavisd-new is used as content filter.
Which virus scanner is used by ISPConfig 2
ISPConfig 2 uses ClamAV (http://www.clamav.net) as virus scanner and the E-mail Sanitizer (http://www.impsec.org/email-tools/procmail-security.html) as content filter.
How to enable verbose logging in pure-ftpd on Debian Linux
To turn on verbose logging (e.g. to debug FTP connection or authentication problems) in pure-ftpd FTP server on Debian and Ubuntu Linux, execute the following command as root user in the shell:
echo 'yes' > /etc/pure-ftpd/conf/VerboseLog
and then restart pure-ftpd
/etc/init.d/pure-ftpd-mysql restart
The debug output will be logged to syslog. To view the log content, execute:
tail -n 100 /var/log/syslog
To disable verbose logging, execute these commands:
rm -f /etc/pure-ftpd/conf/VerboseLog
/etc/init.d/pure-ftpd-mysql restart