certificateiosmail.app
My IMAP (and SMTP) server used a self signed certificate.
Once I marked the certificate as "trusted" in the Mail app, is there a way to remove that trust again?
I tried deleting and re-creating the email account, but the certificate is still trusted afterwards.
The certificate does not show up in the Profiles section of the Settings app.
Apple KB article HT3930 explains how to configure SSL for servermgrd, the Server Admin web interface.
It applies to Mac OS X Server 10.6 so until Apple updates this article part of the steps are confusing / obsolete.
Luckily, on Mountain Lion Server (10.8) servermgrd's certificate is stored in the same location as on Mac OS X Server Snow Leopard: in the System keychain of Aplications>Utilities>Keychain Access.
Here is what is needed on Mountain Lion (taken from the article)
- While logged into the OS X where Server is set up to run services, open Keychain Access.
- Select the System keychain.
Double click the
com.apple.servermgrdidentity preference (credit: picture borrowed from here):
Select your valid SSL certificate. You will have to import your SSL certificate first as explained in KB article PH7297.
- Authenticate as an administrator if prompted.
- As root, restart servermgrd for the changes in Keychain Access to take effect with this Terminal command:
sudo killall servermgrd(authenticate with your administrator password if prompted).
The only folders you can keep locally for IMAP are:
If you want to empty other IMAP mailboxes, you will want to set up local folders on the Mac - use the built in help and search for "Create Mailbox" to get the steps to make a local folder so you can move all the messages there and then send a delete command to the IMAP server to actually remove them if they don't auto purge.
Best Answer
It looks like you might not have actually "trusted" it, but rather made "exception" for it as detailed here: https://blog.httpwatch.com/2013/12/12/five-tips-for-using-self-signed-ssl-certificates-with-ios/
If you did import the certificate, then the above website shows how to remove the "profile" that contains the certificate. To remove the exception, it looks like you need to reset all settings (General > Reset > Reset Settings). Unfortunately it deletes all your settings.
There is further discussion here:
How do you remove SSL certificate exceptions on iOS?