build:imap
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build:imap [2008/04/02 17:41] 151.145.238.91 Add some corrections from 2008-03-02 installation. (CMB) |
build:imap [2008/04/06 23:20] (current) 24.217.108.17 |
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| (See [[http://www.xman.org/imap/pieces.shtml | this article]] for a description of all the pieces involved in email delivery.) | (See [[http://www.xman.org/imap/pieces.shtml | this article]] for a description of all the pieces involved in email delivery.) | ||
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| </code> | </code> | ||
| - | Don't forget to create ''/etc/courier/pop3d.pem'' and ''/etc/courier/imapd.pem'' SSL certificates. | + | |
| - | <code rootshell> | + | |
| - | cp /usr/lib/courier/*.pem /etc/courier/ | + | |
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| + | ==== Security ==== | ||
| + | The courier installation creates a rather sparse certificate that identifies itself as localhost. It's OK as a start for a default installation but the certificate should be updated to contain the correct values. Here is how to do this: | ||
| + | |||
| + | First we need to get a good set of values into the imapd.cnf. This assumes that /etc/ssl/openssl.cnf has been modified to contain the default SLUUG values already, if not see [[http://wiki.sluug.org/build/security#ssl ]] | ||
| + | <code> | ||
| + | mv /etc/courier/imapd.cnf /etc/courier/imapd.cnf.ORIG | ||
| + | cp /etc/ssl/openssl.cnf /etc/courier/imapd.cnf | ||
| </code> | </code> | ||
| - | NOTE: I'm not sure this is correct, or if we should create certificates with ''openssl''. | ||
| + | Next we should extend the time for the certificates for 10 years. The default is one year, which means a new certificate has to be created every year. I'm too lazy for that. To do this, edit the certificate creation script. | ||
| + | <code> | ||
| + | vi /usr/sbin/mkimapdcert | ||
| + | </code> | ||
| + | |||
| + | Look for the values 365 and add a zero to the end so it is 3650 (ten years) | ||
| + | |||
| + | As a safety measure, the mkimapdcert script checks to see if a certificate already exists and will exit if it finds one. So we need to move the old certificate to the side. This is not necessary if that file is a link to /etc/courier/imapd.pem just delete the link. | ||
| + | <code> | ||
| + | mv /usr/lib/courier/imapd.pem /usr/lib/courier/imapd.ORIG | ||
| + | </code> | ||
| + | |||
| + | At this point everything should be in place to create a new cert, so run the script, if the openssl.cnf has been previously modified you can just hit enter all the way through to accept the defaults. | ||
| + | <code> | ||
| + | /usr/lib/courier/mkimapdcert | ||
| + | </code> | ||
| + | |||
| + | Now we have a shiny new certificate that has all the correct values such as bud.sluug.org instead of localhost. Put the cert in place. | ||
| + | <code> | ||
| + | mv /etc/courier/imapd.pem /etc/courier/imapd.pem.ORIG | ||
| + | ln -s /usr/lib/courier/imapd.pem /etc/courier/ | ||
| + | </code> | ||
| + | |||
| + | Courier only reads the certificate at start up, so we need to bump it. | ||
| + | <code> | ||
| + | /etc/init.d/courier-imap-ssl reload | ||
| + | </code> | ||
| + | |||
| + | The certificate should be ready to go now. Fire up a mail client and connect to bud.sluug.org and check the certificate that is offered for the correct values, ie bud.sluug.org instead of localhost. | ||
| + | |||
| + | Here is the same thing for pop3d | ||
| + | <code> | ||
| + | vi /usr/lib/courier/mkpop3dcert # Change 365 to 3650 | ||
| + | mv /etc/courier/pop3d.cnf /etc/courier/pop3d.cnf.ORIG # Save the old stuff, in case | ||
| + | cp /etc/ssl/openssl.cnf /etc/courier/pop3d.cnf # Get SLUUG default | ||
| + | ls -l /usr/lib/courier/pop3d.pem # See if is a link | ||
| + | rm /usr/lib/courier/pop3d.pem # Script won't run if this file exists | ||
| + | /usr/lib/courier/mkpop3dcert # Run the cert script | ||
| + | mv /etc/courier/pop3d.pem /etc/courier/pop3d.pem.ORIG # Save the old stuff, in case | ||
| + | ln -s /usr/lib/courier/pop3d.pem /etc/courier/ # Create link | ||
| + | ls -l /etc/courier/ # Make sure is OK | ||
| + | /etc/init.d/courier-pop-ssl restart # Reload the cert | ||
| + | </code> | ||
| ===== Configuration ===== | ===== Configuration ===== | ||
build/imap.1207176109.txt.gz · Last modified: 2008/04/02 17:41 by 151.145.238.91
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