- dovecot - dovecot.org

[Dovecot] Security hole with mboxes
by Timo Sirainen 29 May '06

29 May '06

Unfortunately we have our first problem that could really be counted as security hole. Giving "1 LIST .. *" IMAP command allows the user to see all files and directories under the mbox root's parent directory, so potentially you could see other users' mailbox names. Nothing can be done with them though, so it's not possible to read or modify them. There are also some other less than wanted behaviors that can be done with "." and ".." directories, such as "DELETE .." command can give errors. Also with maildir if you store indexes in different directory than mails this command can be used to delete the index files. Anyway I don't see any of these as security issues. Hopefully most people have their mail directory under user's home directory, so this would only list the home directory's contents. But if you do have users' mails stored in eg. under /var/mail/%u/ directory, giving that command would list everything under /var/mail, assuming that the process has permissions to do that (that's why you should be using different UIDs for users if possible). This affects 1.0 beta and 1.0 stable releases, but not 0.99.x. Fix is in http://dovecot.org/list/dovecot-cvs/2006-May/005563.html I'll also release 1.0 beta8 now. Thanks for Bill Boebel for noticing "DELETE .." doing weird things with maildir.

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[Dovecot] Subfolder in Maildir
by Bart Braem 29 May '06

29 May '06

Hello, We have installed a brand new Dovecot because it seems very interesting as an IMAP server. We created a mailbox for a test user and we succeeded in copying some mails into it. However making subfolders does not work. The only folders we can create are in the root, next to the INBOX that is. We thought Maildir does support subfolders (as opposed to mbox), are we wrong here? Our Dovecot version is 1.0.b8_1. Bart

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[Dovecot] Server statistics
by Dean Manners 29 May '06

29 May '06

Hey guys, Is there a way to extract the concurrent connectons to a dovecot servers? Got a fairly busy installation that Id like to monitor/graph concurrent connections for. __________________________________________ Dean Manners

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[Dovecot] beta8 starts but no POP3 access
by Obantec Support 29 May '06

29 May '06

Hi I just compiled stock beta8 on FC3 with ./configure make make install all looked ok and i changed my dovecot.conf to suit. start dovecot and i see it running May 29 08:18:00 Info: Dovecot v1.0.beta8 starting up POP3 to 1 account and May 29 08:18:06 Info: auth(default): client in: AUTH 1 PLAIN service=POP3 lip=xx.xx.xx.xx rip=yy.yy.yy.yy resp=<hidden> May 29 08:18:06 Info: auth(default): client out: OK 1 user=obantec_com May 29 08:18:06 Info: auth(default): master in: REQUEST 1 19528 1 May 29 08:18:06 Info: auth(default): master out: USER 1 obantec_com system_user=obantec_com uid=501 gid=10001 home=/home/domain/domain17 May 29 08:18:06 Info: pop3-login: Login: user=<obantec_com>, method=PLAIN, rip=yy.yy.yy.yy, lip=xx.xx.xx.xx May 29 08:18:06 proteus2 dovecot: POP3(obantec_com): Corrupted index cache file /home/domain/domain17/mail/.imap/INBOX/dovecot.index.cache: indexid changed May 29 08:18:06 proteus2 dovecot: child 19536 (pop3) killed with signal 11 yy.yy.yy.yy & xx.xx.xx.xx are the ip's just masked out. OE just immediately say error , what is also worrying is the Corrupted index message even though i am using POP3. any ideas what to look for. I might add a test box running FC3 and the same .conf works! Mark -- Obantec Support www.obantec.net 0845 458 3121 WebHosting and Domains Nominet UK Member & IPStag Holder CentralNic Accredited Reseller

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[Dovecot] setting default_mail_env - INBOX not seen?
by Noah 29 May '06

29 May '06

Hi there, I am trying to figure out hte Proper defualt_mail_env definition default_mail_env = mbox:%h/mail:INBOX=/usr/mail/%u (yes /usr/mail not /var/mail) Most users have their INBOX at /usr/mail/%u and some users have saved-folders and other mail folders in %h/mail *** right now i am unable to view my inbox. But I can view all the folders and contents of the %h/mail subdirs visible as separate folders. do I have this set up correctly? My IMAP client is unable to see my INBOX file. Cheers, Noah

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[Dovecot] Dovecot Implementation
by Jagga Soorma 27 May '06

27 May '06

Hey Guys, I was able to get dovecot running on my linux server using kerb authentication against our windows 2003 domain controller. Is there a way for me to use the windows active directory for looking up names on the email clients? I have tried setting the base dn to the following under microsoft outlook: dc=domain,dc=com cn=users,dc=domain,dc=com However, I am unable to lookup any names. Any ideas or suggestions? Thanks in advance, -J

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[Dovecot] [RFC] create_dovecot_shares
by Gavin Henry 26 May '06

26 May '06

Dear All, As mentioned previously at: http://www.dovecot.org/list/dovecot/2006-May/013003.html create_dovecot_shares is now finished. Apologies to all for the time it has taken. Description: "Creating lots of dovecot-shared files, changing permissions and creating symlinks is a pain, especially when dealing with more than a handle of users. create_dovecot_shares helps. It modifies users home directories and Maildirs (permissions) for sharing via Dovecot, and creates symlinks into the Maildir you want the shares accessed from. There's even a restore option, to roll back any changes you made with a history of 10 runs." Uploaded to my CPAN directory (not indexed yet): http://search.cpan.org/~ghenry/ HTML Docs (embedded in program): http://www.suretecsystems.com/our_docs/create_dovecot_shares.html Syntax highlighted Code: http://www.suretecsystems.com/our_docs/create_dovecot_shares-code.html Actual Program (Please go to CPAN for latest version from now on): http://www.perl.me.uk/create_dovecot_shares Hope this helps someone out. If it does, maybe we should start a "contrib" section in the source? Many thanks, Gavin. -- Kind Regards, Gavin Henry. Managing Director. T +44 (0) 1224 279484 M +44 (0) 7930 323266 F +44 (0) 1224 742001 E ghenry(a)suretecsystems.com Open Source. Open Solutions(tm). http://www.suretecsystems.com/

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[Dovecot] Dovecot Authentication to Windows Domain Controller
by Jagga Soorma 26 May '06

26 May '06

Hey Guys, I am trying to convince my co-workers to move from Exchange 2003 to a unix implementation of sendmai/dovecot. They have a couple of concerns that I am sure can be resolved. First, is there a way for dovecot running on a linux server to authenticate a user to a windows 2003 domain controller? If so, then where can I get information on how to implement and test this feature? Also, do you guys know of any calender software that can be used with this implementation as well? Where users can maybe share their meetings? Any comments or suggestions would be grately appreciated. Thanks in advance, -Jagga

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[Dovecot] Missing Mailboxes
by Jim 25 May '06

25 May '06

I upgraded from Fedora 4 to 5, which took me from dovecot .99 to 1.x. When I started up Thunderbird, I could not see any mailboxes other than Inbox. I am using Maildir with postfix. I re-installed .99, and all the mailboxes are back. I looked at the wiki on Missing Mailboxes, but I am not sure what I have to fix, and I do not really want to re-install the 1.x version and mess around, as I will mess up a number of other people. Clearly, I am not an expert, so if anyone can can help, I will be most appreciative! Jim

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[Dovecot] Bug / Problem - Dovecot and Thunderbird
by wc_fbsd＠xxiii.com 25 May '06

25 May '06

Greetings, I've been running Dovecot for a couple years now. Currently 1.0.b8 on FreeBSD i386. I just switched to Mozilla Thunderbird 1.5.0.2 (windows) for an IMAP client, and am having some problems that appear to be at least partially attributable to Dovecot. After configuring the IMAP account, TB fetched the list of folders on the server, but was displaying several folders that had been deleted from the server months ago. When I tried to access or delete the folders from TB, it produced an error message (imap command failed, or something similar.) Some other folders had been moved from the root to sub-folders -- they still showed in the root, but not the sub-folder, thus were inaccessible. I looked all through the client's config files, but couldn't find any reference to them. From a shell on the server, I also verified they did not exist. I discovered they were still referenced in the .subscribe file, and had index files in .imap on the server. I deleted those, restarted the server processes, and refreshed the folders in TB, and the problem was resolved. But required manual intervention on the server. Not sure if this is a bug or just client issue, but since those files are maintained by Dovecot, I'm inclined to say "bug". Disclaimer: I know next to nothing about the internals of IMAP! -Thanks, Wayne

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