[Evolution] Evolution on Scientific Linux 7.4 won't open accounts

[W Van Snyder <van snyder sbcglobal net>]

I have installed Scientific Linux 7.4 on one of my own computers.

It includes Evolution 3.28.5-8.el7.

I set up my accounts in exactly the same way as in another computer,
where everything works fine.

All the accounts are imap. Evolution calls them imapx.

After trying to open the inbox, one says

Failed to connect account "XYZ". The reported error was “Error
performing TLS handshake: Internal error in memory allocation.”.

Another one says

Failed to connect account "ABC". The reported error was “Failed to
authenticate: No Kerberos credentials available (default cache:
KEYRING:persistent:3593)”.

(My UID is 3593).

Is this a Scientific Linux problem or an Evolution problem?

In either case, I figure you guys are more likely to know the solution.

Van Snyder