Posts Tagged ‘Mailserver’
How to enable port 465 (smtps) in postfix mailserver
More and more internet access providers are closing port 25 to reduce spam except for connections to their own mailservers. If you run your own mailserver and have problems to connect to it on port 25, you can enable port 465 (smtps) in postfix as a workaround. Edit the /etc/postfix/master.cf file:
vi /etc/postfix/master.cf
and remove the # in front of the smtps line. Example for Debain 5, change the line:
#smtps inet n - - - - smtpd
to:
smtps inet n - - - - smtpd
and restart postfix:
/etc/init.d/postfix restart
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
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.