Courier Imap-SSL

Installazione

• Installare il pacchetto:

sudo apt-get install courier-imap-ssl

Utilizzo del certificato SSL autogenerato

Il certificato SSL di trova in /usr/lib/courier/imapd.pem.

Se lo si vuole rigenerare usando i dati del cliente, editare i parametri del certificato in

sudoedit /etc/courier/imapd.cnf:

...
C=IT
ST=MI
L=Milano
O=Alliance Logistics S.r.l.
OU=Courier Imap SSL
CN=fire.all-logistics.com
emailAddress=all-alert@rvmgroup.it
...

• Occorre cancellarlo per ricrearlo con i parametri corretti:

sudo rm -f /usr/lib/courier/imapd.pem
sudo mkimapdcert

• Riavviare Courier-Imap:

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

Utilizzo di un certificato SSL firmato da una propria CA

• Preparare il certificato
• Esportare il certificato in mail.nome.dom.crt
• Esportare la private key senza password in: mail.nome.dom.key
• Copiarli sulla macchina
• Copiare anche il certificato della CA ca.nome.dom.crt

• Fare una copia dei certificati originali:

cd /etc/courier
cp imapd.pem imapd.pem.ori 
cp pop3.pem pop3d.pem.ori 

• Concatenare i due certificati in un unico file:

cat /tmp/mail.nome.dom.key /tmp/mail.nome.dom.crt > mail.nome.dom.pem

Si otterà una cosa del genere:

# cat mail.nome.dom.pem
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

• Impostare i certificati nella configurazione:

sudoedit /etc/courier/imapd-ssl 

...
TLS_CERTFILE=/path/to//mail.nome.dom.pem
...
TLS_TRUSTCERTS=/etc/postfix/ca.nome.dom.crt
...

• Riavviare courier-imap-ssl

sudo invoke-rc.d courier-imap-ssl stop
sudo invoke-rc.d courier-imap-ssl start

• Testare

Riferimenti

• Courier IMAP SSL Server Certificate Installtion and Configuration