OpenSSL
Verifica se SSL (e/o TLS) funziona:
- smtp + TLS (porta 25)
openssl s_client -CApath /etc/ssl/certs -connect mail.qualcosa.it:25 -starttls smtp
- imap + TLS (porta 143)
openssl s_client -CApath /etc/ssl/certs -connect mail.qualcosa.it:143 -starttls imap
- pop3 + TLS (porta 110)
openssl s_client -CApath /etc/ssl/certs -connect mail.qualcosa.it:110 -starttls pop3
- smtps (porta 465)
openssl s_client -CApath /etc/ssl/certs -connect mail.qualcosa.it:smtps
- imaps (porta 993)
openssl s_client -CApath /etc/ssl/certs -connect mail.qualcosa.it:imaps
- pop3s (porta 995)
openssl s_client -CApath /etc/ssl/certs -connect mail.qualcosa.it:pop3s
Cambiare la password a una chiave privata
openssl rsa -des3 -in keyfile.key -out keyfile-with-new-password.key