Re: tls self-signed certificates
On Oct 17, 2007, at 9:55 PM, Craig White wrote: OK - what I discovered was that TLS works with this setup (telnet localhost 143) IMAP/SSL doesn't seem to work when you 'telnet localhost 993' but on a client that is forgiving for self-signed certificates, it does actually work. So much for my testing methodology. Try this to access an IMAP/SSL server via the command line: openssl s_client -connect hostname:port -nik 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
Re: UC Davis Cyrus Incident September 2007
--On Thursday, October 18, 2007 9:58 AM +0200 Pascal Gienger [EMAIL PROTECTED] wrote: Scott Adkins [EMAIL PROTECTED] wrote: Meanwhile, we hacked around this in a very cool way. We copied the imapd process 60 times (assuming average of 12,000 processes, shooting for 200 processes per executable, that is 60 individual executables). These were named /usr/cyrus/bin/imapd_001 through /usr/cyrus/bin/imapd_060. We then symlinked the imapd binary to imapd_001. We then wrote a cron job that ran once a minute and relinked the imapd symlink to the next numbered executable, And how did you solve the problem of the deadlock resulting in deleteing the symbolic link, setting the new one? Between these events an exec of imapd would break resulting in an error to the customer. Funny hack though. Actually, I don't see a deadlock situation at all... I am guessing that theorettically, it is possible... but the ln -sf option makes the overwriting of the symlink an atomic action (as much as it can), which is why it seems to work. I stress tested this as much as I could prior to putting it into production, simulating tons of users logging in and out of the server while rotating the symlink as fast as I could. There was not one case of a connection failure at any point during the test. There are other factors that are involved too... Process re-use keeps a lot of problems to a minimum... We don't use preforking, but I imagine that preforking would further reduce any possibilities of deadlocking. Users coming into the system would be funneled to a socket associated with an IMAP process that has already been running for a bit, so it is clean from their perspective. The only issue is actually between master and imapd, and I don't know what master does if it tries to spawn an imapd and it fails... it may just try again... I dounbt it just out-right refused the incoming connection. I need to look at the source code to understand it better. Scott -- +---+ Scott W. Adkins Work (740)593-9478 Fax (740)593-1944 UNIX Systems Engineer mailto:[EMAIL PROTECTED] +---+ PGP Public Key http://edirectory.ohio.edu/?$search?uid=adkinss pgpPAbPHC07cU.pgp Description: PGP signature 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
mbox to cyrus migration
Are there any toold to migrate a mbox to cyrus mailbox? I have a mbox dumb from a dbmail mailbox and need to put it on a cyrus mailbox Any tools or pointers? Thanks Mike 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
Re: mbox to cyrus migration
Mike Zupan wrote: Are there any toold to migrate a mbox to cyrus mailbox? I have a mbox dumb from a dbmail mailbox and need to put it on a cyrus mailbox Any tools or pointers? http://www.linux-france.org/prj/imapsync WBR. Dmitriy 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
Re: mbox to cyrus migration
Some mail client (like thunderbird) store mailboxes in mbox format. You can create an empty folder in any non imap account, replace the empty file by your dump, start your MUA, check if your mail are ok. Then configure your imap account and dragdrop into it. You can see the result in seconds. If you mailbox is very big or you have lot of mailboxes to migrate, command line tool become more interesting. Hope someone else will help you in this case. Did you googled for mbox imap migration or conveetion ? Regards. On 10/18/07, Mike Zupan [EMAIL PROTECTED] wrote: Are there any toold to migrate a mbox to cyrus mailbox? I have a mbox dumb from a dbmail mailbox and need to put it on a cyrus mailbox Any tools or pointers? Thanks Mike 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 -- Alain Spineux aspineux gmail com May the sources be with you 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
Re: UC Davis Cyrus Incident September 2007
Actually, I don't see a deadlock situation at all... I am guessing that theorettically, it is possible... but the ln -sf option makes the overwriting of the symlink an atomic action (as much as it can), which Not a deadlock situation, but a possible file doesn't exist error. In the Unix/POSIX world, symlink will not overwrite an existing file (man 3 symlink), but rename will do so (man 3 rename), and it will do it atomically. So, as an strace shows, this isn't atomic. $ touch b $ strace ln -fs a b ... symlink(a, b) = -1 EEXIST (File exists) unlink(b) = 0 symlink(a, b) = 0 ... But this is: $ ln -fs a b.tmp $ strace mv b.tmp b ... rename(b.tmp, b)= 0 ... Rob -- [EMAIL PROTECTED] Sign up at http://fastmail.fm for fast, ad free, IMAP accessible email 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
