> Odd. So what about
>    openssl s_client -connect <public IP>:993
> when running on the box itself? Does that fail too?

yes it fails with:
<code>
CONNECTED(00000003)
3083573400:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake 
failure:s3_pkt.c:1193:SSL alert number 40
3083573400:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake 
failure:s3_pkt.c:590:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 7 bytes and written 0 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : SSLv3
    Cipher    : 0000
    Session-ID: 
    Session-ID-ctx: 
    Master-Key: 
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    Start Time: 1307879512
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
---
</code>
 
> It's possible you have two different processes bound to different IPs
> (you can use "netstat -natp | grep :993" as root to check)

<code>
tcp             0       0       127.0.0.1:993           0.0.0.0:*               
LISTEN  23702/couriertcpd
tcp             0       0       <public IP>:993 0.0.0.0:*               LISTEN  
23702/couriertcpd
tcp6            0       0       ::1:993                 :::*                    
LISTEN  23702/couriertcpd
</code>

> Otherwise, ISTSR couriertls is able to use different certificates depending
> on which IP you connect to, so maybe you have a cert.127.0.0.1.pem which is
> invalid.  Sorry, I don't remember the exact filename, but I'm pretty sure
> you append the IP address to the filename stem.

is EXPERIMENTAL in courier version: 4.8.0-3 to add hostname

ps: sorry for my english, please explain easy

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