

Products with this feature include Avast, BitDefender, Bullguard, ESET, and Kaspersky AVG LinkScanner / SurfShield can cause this error on search sites. (2) Firefox not being set up to work with your security software that intercepts and filters secure connections. Sometimes allowing computers to use an internet-based time source can introduce this problem. (1) Error in your system's date, time, or time zone, which throws off certificate validity checks. TLS Certificate: Some mail servers require computers that connect to them to provide a certificate proving their identity.Īllow insecure authentication: For email accounts that don’t support secure authentication, let Mail use a non-encrypted version of your user name and password to connect to the mail server.When you get this for pretty much all secure sites, the problem usually is one of the following: IMAP Path Prefix: The location of your mailboxes on an IMAP server.

This option is available only for POP and IMAP accounts.Ĭlick the button, then enter or change the settings as directed by your email account provider: Port (or Internal Port and External Port), Use TLS/SSL: The port numbers for receiving messages, and whether to use TLS/SSL.Īuthentication: The authentication method.

If you deselect this option, you can specify the following, as directed by your email account provider: Let Mail automatically manage settings for your email account, such as port numbers and authentication methods, in Mail.
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