Posts Tagged ‘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:
and remove the # in front of the smtps line. Example for Debain 5, change the line:
#smtps inet n - - - - smtpd
smtps inet n - - - - smtpd
and restart postfix:
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:
and create the new certificates:
Courier pop3 and imap have to be restarted so they pick up the new ecrtificates:
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
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!
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.