Patrick Boutilier wrote:
On 01/24/2010 10:39 AM, Bob Dye wrote:
Joseph Brennan wrote:
--On Saturday, January 23, 2010 4:54 PM -0800 Bob Dye
<bobdye@xxxxxxxxxxxxxxxxx> wrote:
I'm running Cyrus-imapd 2.3.7 on a Redhat Enterprise Linux 5 system.
TLS works fine if I connect to the imap port (143). If I try to connect
instead via the imaps port (993), the attempt times out and I get the
following in the log:
imaps[27170]: imaps TLS negotiation failed: [xx.xx.xx.xx]
imaps[27170]: Fatal error: tls_start_servertls() failed
Normal. It should fail. 993 requires SSL.
Joseph Brennan
Columbia University Information Technology
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993 (the port) does not require SSL. The official IANA definition is
"imap4 protocol over TLS/SSL".
Perhaps you're saying that Cyrus-imapd only supports SSL on 993 for some
reason?
Assuming you are running imapd -s on port 993, from the man page for imapd:
-s Serve IMAP over SSL (imaps). All data to and from imapd is
encrypted using the Secure Sockets Layer.
--
Bob Dye
Vintagefactor
<http://www.vintagefactor.com/> <http://www.vintagefactor.com/>
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Cyrus Home Page: http://cyrusimap.web.cmu.edu/
Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Yes, those are the words on the man page. I am reluctant to simply
accept that as true because:
1. The man page does not say anything about TLS. It is difficult to
draw conclusions from lack of documentation. You might assume that it
does not support TLS at all, but it definitely does. I have seen a
number of cases where software documentation has not been updated to
reflect TLS (vs. SSL).
2. The error message ("imaps TLS negotiation failed") implies that
cyrus-imapd is trying to support TLS and failing. If it supported only
SSL, it would presumably not try TLS.
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