[CentOS] C6.7 evolution to cyrus imap(s) fails

Tue Aug 11 15:56:01 UTC 2015
Dr J Austin <ja at maui.jaa.org.uk>

Hi

I have been using evolution/cyrus/exim for 10 years - until yesterday!

I upgraded to C6.7 and now there is no way I can find of connecting
from evo to the cyrus imap(s) server

[root at maui:~]$ ps -ef|grep imap
cyrus    27768     1  0 15:21 ?        00:00:00 
/usr/lib/cyrus-imapd/cyrus-master -d
cyrus    27775 27768  0 15:21 ?        00:00:00 imapd -s
cyrus    27779 27768  0 15:21 ?        00:00:00 imapd
cyrus    27781 27768  0 15:21 ?        00:00:00 imapd
cyrus    27782 27768  0 15:21 ?        00:00:00 imapd
cyrus    27783 27768  0 15:21 ?        00:00:00 imapd
cyrus    27933 27768  0 15:36 ?        00:00:00 imapd
cyrus    28048 27768  0 15:46 ?        00:00:00 imapd

evo is running on a fully updated F22 machine, cyrus/exim on C6.7
k-9 mail on a tablet and a mobile no longer connect
even tried thunderbird which also would not connect

When trying to connect with evo I get 
Failed to open folder
The reported error was "Could not connect to 148.197.29.5: Connection 
refused"

If I try to change things by editing the "Recieving Email" menu
ie by changing the "Encryption method" from "SSL on a dedicated port" 993
to "No encryption" it still fails
In fact just hitting Authentication "Check for supported types"
gives
Failed to query server for a list of supported authentication mechanisms.
Could not connect to 148.197.29.5: Connection refused

wireshark shows just two lines using tcp.port==993 filter
Unfortunately this does not mean much to me!

124	3.276582000	148.197.29.159	148.197.29.5	TCP	74 
54564→993 [SYN] Seq=0 Win=29200 Len=0 MSS=1460 SACK_PERM=1 TSval=71392019 
TSecr=0 WS=128

125	3.276770000	148.197.29.5	148.197.29.159	TCP	60 
993→54564 [RST, ACK] Seq=1 Ack=1 Win=0 Len=0

I have tried the following to no avail
tcpdump -s 0 -w dump_file
ssldump -a -A -H -d -r dump_file
and
selinux in permissive mode
firewall off

Help!

John