Odd problem: IMAP/S suddenly not working, but no errors, and IMAP still works
simon.matter at invoca.ch
Mon Nov 1 11:21:39 EDT 2010
> On 11/1/10 10:46 AM, Simon Matter wrote:
>>> My Cyrus is from RPM, and I am just nursing it along until my users
>>> finish migrating off and FastMail manages to complete my own migration,
>>> so I don't want to build from source. Why would IMAP/S block on empty
>>> /dev/random, while IMAP+STARTTLS works? FWIW, SASL2 seems to use
>> If this is really stock CentOS 5 then I think everything Cyrus related
>> should use /dev/urandom and not /dev/random. But, could it be that other
>> software you installed uses /dev/random and makes it "empty"?
> Most things are CentOS RPMs (thanks for those! ;), with a few from
>> [root at inspector ~]# rpm -q cyrus-imapd amavisd-new clamav spamassassin
>> postfix httpd mod_ssl
> Which still leaves me thinking my port 993 problem isn't entropy, because
> STARTTLS works fine.
That's my impression from the beginning, because lack of entropy has not
been a known problem on the RHEL/CentOS configs. That's not much help of
If you already restarted master and you know it's not stuck somehow, then
the only thing I could think to check is your
/var/lib/imap/tls_sessions.db database. I don't know if a broken TLS db
could result in what you see but better check it out.
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