- dovecot - dovecot.org

NFSv4 and Maildir
by Robert Blayzor 30 Sep '16

30 Sep '16

Recently moving to newer storage platforms for mailbox storage so looking at moving mounts from NFSv3 with lots of issues with locking and caching to NFSv4. There seems to be a lot of benefits to v4 along with some other new features, namely “delegation”. So the question boils down to, to delegate or not delegate on Maildir storage. There may be many reasons based on actual platform why to do (or not to do this), but I want to get the general opinion from others that may have more experience with this. Our setup is several FreeBSD 10.x clients running Dovecot/Exim, NetApp NFS mail storage (probably moving to TrueNAS) and using F5 load balancers for client side connections/SSL offload. From what I’ve found (and what i’ve read in the RFC) is that delegation seems to work best when there is NOT a lot of file contention from clients accessing the same files. I realize that in some situations many people are using director to try and keep users on the same client; in our case we’re doing it with F5 iRules. The F5 iRules work great for POP3 and IMAP session persistence, but unfortunately that doesn’t work for SMTP and Dovecot LDA, so we still have possible race conditions from the MTA’s delivering into “INBOX”. (mostly dovecot indexes updating at the same time). So the big question is, who is using Dovecot with maildirs with NFSv4 mounts. What has your experience been? Are you using delegation? By choice and why did you come to that decision. I’m drawing up the conclusion that if you can *mostly* control client control to specific files (ie: directing access to a mailbox to come from one client), then delegation might be ok. However, if you’re not using director and have several NFS mail clients racing to access mailboxes, then delegation might turn into chaos. Your comments welcome and appreciated. -- Robert inoc.net!rblayzor XMPP: rblayzor.AT.inoc.net PGP Key: 78BEDCE1 @ pgp.mit.edu

2 1

Re: Dovecot 2.2.25 fails on SSL
by Andreas M. Kirchwitz 30 Sep '16

30 Sep '16

Joseph Tam <jtam.home(a)gmail.com> wrote: >>> OK, the origin of your problem becomes clearer. You can hardcode these >>> paths into the executables by doing something like >>> >>> env CFLAGS='-I/my'ssl/include' \ >>> LDFLAGS='-L/your/ssl/lib -Wl,-rpath,/my/ssl/lib' \ >>> configure ... >> >> Based on your mail I've tried CFLAGS/LDFLAGS again, and >> now Dovecot didn't even compile any longer. > > I don't use the same OS as you, but what errors dis you get? To be exact here, it's not the compiler but the linker failing (of course, the whole problem is about the linking process). With "--as-needed", the crypto/ssl libraries are not linked at all with the object files. I don't quite understand why it doesn't fall back to the system crypto/ssl libraries because they are in the default pathes with all other libraries. (That's basically what most other software packages do if my custom pathes for "-L" "-Wl,-R" somehow get ignored in the building process.) IMHO, the unusual option "--as-needed" should be removed. There seems to be no benefit but it basically keeps Dovecot to be linked against any custom-specified library. Maybe it's just a problem with RHEL/CentOS 6 and the GCC that ships with it. I'm compiling a lot of software myself and link it against my custom OpenSSL. Never had this problem before, otherwise I would have known to specify "-Wl,--no-as-needed" to reverse ld's behavior to the default. Well, at least I've learned something new. :-) Regards, Andreas

2 1

Softlinks
by Chris 29 Sep '16

29 Sep '16

All, I'm using Maildir. Is it possible to move all (or only some) maildirs with softlinks to another partition? - Chris

2 2

Login just at special timeslots / working hours
by Götz Reinicke - IT Koordinator 29 Sep '16

29 Sep '16

Hi, is there a dovecot feature I did not found yet, which can limit the access to the server to special timeslots like working hours? Or is that a serverside / sssd / auth / pam / account feature? Thanks for hints to some helpfull documentation and sugesstions. Regards . Götz

4 4

dovecot is moving messages to spam
by Webert de Souza Lima 28 Sep '16

28 Sep '16

Hi, is there any dovecot rule settings besides X-Spam-Flag header? Can it move messages via IMAP? I have a message that is being moved to spam folder after delivered in the INBOX but it has no X-Spam-Flag and it's not beeing done by the user (I changed his password, suspended his account and made his login impossible). This happens only when certain "FROM" address is present in the body, like the following message (sent via telnet): From:<some.guy(a)some.domain> Subject: Test teste . Dovecot logs: Sep 28 13:08:00 lmtp(my.user(a)my.domain): Info: OOKlA3rA61dNbwAAkzG9Ng: sieve: msgid=unspecified: stored mail into mailbox 'INBOX' Sep 28 13:08:01 imap(my.user(a)my.domain): Info: copy from INBOX: box=INBOX.Spam, uid=154, msgid=, size=340, subject=Test Sep 28 13:08:01 imap(my.user(a)my.domain): Info: expunge: box=INBOX, uid=18147, msgid=, size=340, subject=Test Thanks in advance

3 4

FreeBSD port
by The Doctor 28 Sep '16

28 Sep '16

Is the person responsible for the FreeBSD port on this list? There might be a minor bug in a small piece of correction code issues in the last 4 days. -- Member - Liberal International This is doctor@@nl2k.ab.ca Ici doctor@@nl2k.ab.ca God,Queen and country!Never Satan President Republic!Beware AntiChrist rising! http://www.fullyfollow.me/rootnl2k Look at Psalms 14 and 53 on Atheism Time for the USA to hold a referendum on its republic and vote to dissolve!!

4 4

Dovecot Pro Community Edition
by Markus Petzsch 28 Sep '16

28 Sep '16

Hi, I'm trying to setup push notifications for Open-Xchange (OX) and struggle with finding the push_notification plugin. According to https://oxpedia.org/wiki/index.php?title=AppSuite:OX_Mail#Requirements it should be found in the Dovecot Pro Community Edition. I'm currently running dovecot that came with CentOS 7.2 but am intrested in OX's push feature. Can someone point me in the right direction where to find the community edition repos? https://oxpedia.org/wiki/index.php?title=Dovecot:Main_Page_Dovecot#dovecotq… only lists password protected repos. Thx for your help in advance. Best Regards Markus Petzsch

2 1

Trying to regain access to my email archive after an upgrade.
by Rick Jones 27 Sep '16

27 Sep '16

Hi - I had been running an Ubuntu 12.04 system on which I receive email, with an inbox in /var/mail/ and a bunch of folders under ~/Maildir. When I upgraded from 14.04 there were a bunch of questions about keeping old/new config files and my muddling through it has me seeing only the inbox, and then a Drafts, Sent and Trash Folder. I would like to regain access to the messages stored under ~/Maildir, but have been thoroughly unsuccessful. I seem to run into duplicate prefix issues and I suspect I have other issues, when I try to add: namespace rest { separator = / prefix = location = maildir:~/Maildir } to what is already present. I've seen a few of the wiki pages, but not fully understanding what is going-on I'm afraid I've not groked them terribly well. any help/pointers for this cluser would be much appreciated. rick jones raj@tardy:~$ dovecot --version 2.2.9 raj@tardy:~$ dovecot -n # 2.2.9: /etc/dovecot/dovecot.conf doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -n > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:25: 'imaps' protocol is no longer necessary, remove it doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:732: protocol managesieve {} has been replaced by protocol sieve { } doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:904: add auth_ prefix to all settings inside auth {} and remove the auth {} section completely doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:942: passdb pam {} has been replaced by passdb { driver=pam } doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:1055: userdb passwd {} has been replaced by userdb { driver=passwd } doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:1117: auth_user has been replaced by service auth { user } # OS: Linux 3.13.0-95-generic x86_64 Ubuntu 14.04.5 LTS auth_mechanisms = plain login log_timestamp = "%Y-%m-%d %H:%M:%S " mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_privileged_group = mail namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { driver = pam } protocols = imap service auth { user = root } ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = passwd } userdb { driver = passwd } protocol pop3 { pop3_uidl_format = %08Xu%08Xv } raj@tardy:~$ vi /etc/dovecot/conf.d/15-mailboxes.conf raj@tardy:~$ dovecot --version 2.2.9

1 0

imapc fetch optimization
by Nagy, Attila 27 Sep '16

27 Sep '16

Hi, imapc does a lot of UID FETCH $UID (BODY.PEEK[]), which is nice, because it works even with the dumbest IMAP server, altough it really kills performance, especially on high latency lines. I wonder: if IMAP servers can effectively handle boundless fetches (like a list with all wanted UIDs, or simply 1:* if all are needed), do you see this as a good addition to develop? This could be a new imapc_features setting afterall... Thanks,

2 8

Drac Plugin
by Darryl Baker 27 Sep '16

27 Sep '16

I now have the drac plugin compiled and working. The plugin binary might even work with the Debian/Ubuntu binary. It was a one line change. I need to talk to the sendmail folks about their macro for the DRAC feature. My custom sendmail.cf code works in a way that makes using drac and SpamHaus for anyone on a blacklisted IP such as non-comercial Comcast users. I am hoping that the drac plugin will get fixed in the core distribution and possible the new binary make it into the Debian/Ubuntu binary build. *** dovecot-2.2.22/src/plugins/drac/drac-plugin.c 2016-09-23 22:49:56.345568783 -0500 --- dovecot-2.2.22/src/plugins/drac/drac-plugin.c-orig 2016-09-26 14:33:46.828670909 -0500 *************** *** 25,31 **** /* libdrac function */ int dracauth(char *, unsigned long, char **); ! const char *drac_plugin_version = DOVECOT_ABI_VERSION; static struct timeout *to_drac = NULL; static const char *drachost = NULL; /* dracd host */ --- 25,31 ---- /* libdrac function */ int dracauth(char *, unsigned long, char **); ! const char *drac_plugin_version = DOVECOT_VERSION; static struct timeout *to_drac = NULL; static const char *drachost = NULL; /* dracd host */ *Darryl Baker*

2 1