I'd like to tell Macos 10.4 Mail that it can trust a self-signed SSL certificate for an IMAP+SMTP/SSL connection to a mail server I run, so that Mail does not complain each time I fetch mail.
Can this be done?
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So this is how I add a Verisign intermediate cert to my desktops. I think the same would work for your self-signed cert. I put the file in /Library/Management/Certs/ on my target machines and then run the below script on them. That adds the cert to the system keychain.
#!/bin/sh /usr/bin/security add-certificates -k /Library/Keychains/System.keychain /Library/Management/Certs/VeriSign\ Class\ 3\ Secure\ Server\ CA.cer exit