External IMAP problems.

[Bagualas]

Hello,

Im trying to configure an external IMAP account. But is returning some strange errors (always worked).

The error of Zimbra is attached


And my IMAP server (dovecot) said me this:

Oct 6 16:49:34 observi dovecot: imap-login: Disconnected (no auth attempts): rip=192.0.0.2, lip=192.0.0.254, TLS handshaking: SSL_accept() failed: error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown


What can be that???
Please help!
regards
Pedro

[ArcaneMagus]

It looks like the SSL Certificate of the external IMAP server is invalid. Is it using a self signed certificate?

[Bagualas]

But I dont want to use SSL... im not marking to be cript the IMAP...
why is that ?
should it go unsecured ?

[phoenix]

Originally Posted by Bagualas

But I dont want to use SSL... im not marking to be cript the IMAP...
why is that ?
should it go unsecured ?

You'll find some further information here: SSL_accept() failed error:14094416:SSL - Yahoo! Search Results

[y@w]

Is there any way for us to make Zimbra ignore the fact that the certificate is self-signed? I have a customer who wants to hook up to their old Zimbra server this way (for whatever reason) and they are getting the same error.